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1
Susilo, Deddy, Budihardja Murtianta, and Arivia Aurelia Devina P. "Perancangan Sistem Modulator Binary Phase Shift Keying." Techné : Jurnal Ilmiah Elektroteknika 15, no. 01 (2016): 77–89. http://dx.doi.org/10.31358/techne.v15i01.143.
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Sistem yang dibangun adalah sebuah modul sistem modulator BPSK (Binary Phase Shift Keying). Perangkat yang dibahas adalah modulator BPSK dengan frekuensi 10kHz-48kHz dan untuk transmisi secara nirkabel ditambahkan pemancar FM yang akan mentranslasikan sinyal pembawa pada frekuensi radio sebesar 80MHz. Berdasarkan pengujian yang telah dilakukan, sistem perangkat modulator BPSK yang dibangun dapat bekerja dengan baik. Perancangan pseudorandom generator dengan menanamkan algoritma register geser 5 tingkat dengan mikrokontroler AVR ATTINY13A dapat diatur dengan bit rate bervariasi dari 1200, 2400, 4800 dan 9600 bps. Untai tapis lolos rendah Bessel orde 2 dengan fc 48kHz dapat berfungsi memperhalus hasil keluaran pseudorandom generator dan level shifter. Untai selektor keluaran BPSK dapat berfungsi dengan baik untuk pemilih sinyal sinus 0° dan 180° serta pemancar FM dapat menghasilkan spectrum sinyal paling tinggi pada frekuensi 80MHz.
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Shetty, Mamtha. "Design of BPSK Modulator Using VHDL." INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY 13, no. 12 (2014): 5247–52. http://dx.doi.org/10.24297/ijct.v13i12.5276.
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Binary Phase Shift Keying represents the simulation results of binary digital modulation schemes. Here for BASK and BPSK modulation techniques use FPGA algorithm. If multiplier block is used for multiplication bit stream with carrier signal, used time will rises. In addition using multiplier block obtained simulation results were analyzed and compared to other simulation results. Source consumptions of FPGA-based BASK modulation technique and BPSK modulation technique were compared. Also, for different modulation algorithm, source consumptions of BASK and BPSK modulation technique were analyzed using VHDL. Designed modulators using VHSIC (Very High Speed Integrated Circuit) Hardware Description Language (VHDL) was realized on high speed FPGA (Field Program Programmable Gate Array). Because for used modulation technique data rate transfer is fairly important in wireless communication systems. The highest speed data rate transfer can be realized using fiber optic cables. In addition, BER (Bit Error Rate) of BASK and BPSK modulator was compared using MATLAB simulation program. Binary data rate is same for BPSK and BASK. BPSK and BASK modulations were designed on FPGA using VHDL hardware description language.
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J, Padmini, and V. Nanammal. "FPGA Implementation of Digital Modulation Schemes Using Verilog HDL." International Journal for Research in Applied Science and Engineering Technology 10, no. 9 (2022): 560–67. http://dx.doi.org/10.22214/ijraset.2022.46596.
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Abstract: This paper describes the design and development of an FPGA-based digital Modulation Scheme for high-resolution Communication Application. We are focusing on implementation of Verilog based code simulation for fundamental and widely used digital modulation techniques such as Binary Amplitude-shift keying (BASK), Binary Frequency-shift keying (BFSK), Binary Phase-shift keying (BPSK) and Quadrature Phase Shift Keying(QPSK). In this work the idea of sinusoidal signals that have been generated is plain sailing in nature and based on fundamentals of signal sampling and quantization. Such concept of sinusoidal signals generation is not unfamiliar but somehow simplified using sampling and quantization in time and amplitude domain, respectively. The whole simulation is done on Modelsim and Xilinx-ISE using VERILOG Hardware descriptive language. The work has been accomplished on Thirty two bit serial data transmission with self-adjustable carrier frequency and bit duration length.
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Awan, Waseem. "Digital Modulator using Digitally Programmable Complementary metal–oxide–semiconductor Differential Voltage Current Conveyor." Academic Journal of Research and Scientific Publishing 6, no. 65 (2024): 21–40. http://dx.doi.org/10.52132/ajrsp.e.2024.65.2.
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This study aims to Developing a digital modulation system using a new technology and idea, which is the digitally programmable CMOS (Complementary metal–oxide–semiconductor), Integrate the CMOS DVCC circuit as a modulator in the communication systems, as will be explained in chapter 3, Finally, simulate this new idea in communication by using a simulation program, which is PSpice software, and analyzing the results. By focusing on How to use digital programmable CMOS (Complementary Metal–Oxide–Semiconductor) in a communication system as a digital modulator, Verifying the effectiveness of the study using simulation software such as PSpice and MATLAB, and Analyzing and verifying the effectiveness of the three modified modulation techniques. Digitally programmable Binary Amplitude shift keying (DP BASK), Digitally programmable Binary Phase shift keying (DP BPSK), And Digitally programmable Binary Frequency shift keying (DP BFSK). This study adopts an applied research approach. The study demonstrated that the CMOS DVCC circuit could be successfully integrated into communication systems as a digital modulator. The study recommended to conduct further research on the noise resistance capabilities of the DP modulation techniques, and explore additional modulation techniques that could benefit from digitally programmable CMOS technology, such as Quadrature Amplitude Modulation (QAM) or Orthogonal Frequency-Division Multiplexing (OFDM).
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Miglani, Rajan, and Jagjit Singh Malhotra. "Statistical Analysis of FSO Links Employing Multiple Transmitter/Receiver Strategy over Double-Generalized and Gamma–Gamma Fading Channel Using Different Modulation Techniques." Journal of Optical Communications 40, no. 3 (2019): 295–305. http://dx.doi.org/10.1515/joc-2017-0066.
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Abstract Free space optical (FSO) communication links have recently received lot of attention as high bandwidth and cost-effective access technique. However, the transmission medium, i. e. atmosphere, itself is a major spoilsport factor as atmospheric turbulence may lead to fading. The legacy of spatial diversity techniques which have already proven their worth as effective mechanism to counter channel fading in radio links has also been extended to FSO links in this paper. A mathematical model to evaluate error rate performance of FSO links over strong turbulent conditions using gamma–gamma and double-generalized gamma channel model for different modulation techniques has also been included. It was observed that higher modulation techniques such as binary phase shift keying (BPSK) and differential phase shift keying (DPSK) allow superior error performance as compared to on–off keying (OOK) links, and this performance further enhances with incorporation of spatial diversity techniques. However, across different diversity options, explained in this paper, BPSK–MISO links were the best choice for turbulent conditions.
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Rajanna, B. V., SVNL Lalitha, Ganta Joga Rao, and S. K. Shrivastava. "BPSK Modulation and Demodulation with Power Line Carrier Communication and GSM Communication for Smart Metering." International Journal of Power Electronics and Drive Systems (IJPEDS) 7, no. 3 (2016): 713. http://dx.doi.org/10.11591/ijpeds.v7.i3.pp713-722.
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GSM/GPRS and PLC communication are used for Automatic Meter Reading (AMR) applications. These AMR systems have made substantial progress over the recent years in terms of functionality, scalability, performance and openness such that they can perform remote metering applications for very demanding and complex systems. By using BPSK (Binary Phase Shift Keying) modulation with Power Line Carrier Communication, Smart Metering can be done in Rural Smart Micro-grids. The design and Simulation of BPSK Modulation and Demodulation are successfully done by using MATLAB/Simulink software. The advantages of using BPSK modulation over the QPSK modulation and the advantages of PLC Communication over the GSM Communication is identified in this paper.
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Adiono, Trio, Angga Pradana, and Syifaul Fuada. "A Low-complexity of VLC System using BPSK." International Journal of Recent Contributions from Engineering, Science & IT (iJES) 6, no. 1 (2018): 99. http://dx.doi.org/10.3991/ijes.v6i1.8072.
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The design, implementation, and demonstration of visible light communication (VLC) system using Binary Phase Shift Keying (BPSK) modulation has been presented in this short paper. Our system is applied for indoor environment purpose. The test result shows that our VLC system able to work properly as expected, the BPSK constellation can be formed wirelessly through a visible light link. We obtained 13.4 kbps of maximum data rate transfer.
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Raji, T. I., and Z. K. Adeyemo. "Performance of Binary Phase Shift Keying (BPSK) and Quartenary Phase Shift Keying (QPSK) Signalling Schemes in Fast and Frequency Non-Selective Rayleigh Fading Channel with a Decision Feedback Equalizer (DFE) at the Receiver." Advanced Materials Research 62-64 (February 2009): 99–104. http://dx.doi.org/10.4028/www.scientific.net/amr.62-64.99.
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In this paper, we study the performance of Binary phase shift keying (BPSK) and Quartenary phase shift keying (QPSK) modulation signalling over fast and frequency non-selective Rayleigh fading channel with mobile digital communication and usually a decision feedback equalizer (DFE) at the receiver. Mobile communication is generally a complex process in which the input modulated signals propagate to the receiver over many different paths resulting in what is known as multipath propagation. Its main effects are delay spread and Doppler spread. These effects result in the channel being classified as fast and frequency non selective. Performances in terms of Bit Error Rate (BER) with respect to the Signal-to-Noise Ratio (SNR) at different selected velocities of 10, 40, 70 and 100km/hr are investigated with Adaptive Equalizer. Simulation results are obtained using MATLAB 7.0 programming language. The results indicate that at all the velocities considered; there is an excessive degradation in the BER performance due to fading with both the BPSK and QPSK modulation schemes. However, the BER improves for BPSK modulation signalling scheme when a decision feedback equalizer is used at the receiver
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Jiang, Kaiyuan, Jiawei Zhang, Haibin Wu, Aili Wang, and Yuji Iwahori. "A Novel Digital Modulation Recognition Algorithm Based on Deep Convolutional Neural Network." Applied Sciences 10, no. 3 (2020): 1166. http://dx.doi.org/10.3390/app10031166.
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The modulation recognition of digital signals under non-cooperative conditions is one of the important research contents here. With the rapid development of artificial intelligence technology, deep learning theory is also increasingly being applied to the field of modulation recognition. In this paper, a novel digital signal modulation recognition algorithm is proposed, which has combined the InceptionResNetV2 network with transfer adaptation, called InceptionResnetV2-TA. Firstly, the received signal is preprocessed and generated the constellation diagram. Then, the constellation diagram is used as the input of the InceptionResNetV2 network to identify different kinds of signals. Transfer adaptation is used for feature extraction and SVM classifier is used to identify the modulation mode of digital signal. The constellation diagram of three typical signals, including Binary Phase Shift Keying(BPSK), Quadrature Phase Shift Keying(QPSK) and 8 Phase Shift Keying(8PSK), was made for the experiments. When the signal-to-noise ratio(SNR) is 4dB, the recognition rates of BPSK, QPSK and 8PSK are respectively 1.0, 0.9966 and 0.9633 obtained by InceptionResnetV2-TA, and at the same time, the recognition rate can be 3% higher than other algorithms. Compared with the traditional modulation recognition algorithms, the experimental results show that the proposed algorithm in this paper has a higher accuracy rate for digital signal modulation recognition at low SNR.
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Ghauri, Sajjad Ahmed. "KNN BASED CLASSIFICATION OF DIGITAL MODULATED SIGNALS." IIUM Engineering Journal 17, no. 2 (2016): 71–82. http://dx.doi.org/10.31436/iiumej.v17i2.641.
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Demodulation process without the knowledge of modulation scheme requires Automatic Modulation Classification (AMC). When receiver has limited information about received signal then AMC become essential process. AMC finds important place in the field many civil and military fields such as modern electronic warfare, interfering source recognition, frequency management, link adaptation etc. In this paper we explore the use of K-nearest neighbor (KNN) for modulation classification with different distance measurement methods. Five modulation schemes are used for classification purpose which is Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), Quadrature Amplitude Modulation (QAM), 16-QAM and 64-QAM. Higher order cummulants (HOC) are used as an input feature set to the classifier. Simulation results shows that proposed classification method provides better results for the considered modulation formats.
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Chen, Yuxin, Jie Cheng, Xiaodong Li, Xue Bai, and Zhixi Nie. "Research on Tracking Technique Based on BPSK-CSK Signals." Electronics 13, no. 8 (2024): 1517. http://dx.doi.org/10.3390/electronics13081517.
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The code-shift keying (CSK) modulation method can achieve higher information transmission rates without changing the spread spectrum signal bandwidth. In order to optimise the spread spectrum modulation and demodulation of GNSS signals, in addition to the signal structure, binary phase-shift keying (BPSK) and CSK signals using time-division multiplexing are proposed. A tracking method based on the BPSK-CSK signals is also proposed, which generates the P-branch local codes by fast Fourier transform to obtain the code-slice spacings for the E-branch and the L-branch local codes. Then, the tracked BPSK signals and tracked CSK signals are compared and analysed. Finally, the bit error rate (BER) and tracking error of each method are compared and analysed by comparing with the tracking of conventional BPSK signals and tracking of CSK signals, in order to verify the convergence process of the I-branch integral value. The BPSK-CSK signal tracking method proposed in this paper combines the high information transmission rate of CSK-modulated signals and the low BER of BPSK signals, and the results provide a solid foundation for high-precision GNSS services.
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Barkha Pandey, Raghu Harsh Kalia, Monica Kaushik, and Monika Arora. "Performance Enhancement of DS-CDMA System using Extended BPSK Modulation Scheme." Journal on Today's Ideas - Tomorrow's Technologies 4, no. 2 (2016): 172–80. http://dx.doi.org/10.15415/jotitt.2016.42009.
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In a last few decades there has been tremendous growth and a drastic rise in wireless communication technologies. The major issue that the world is facing today with the advent of so many sophisticated wireless communication devices is efficient utilization of the spectrum. Spectrum efficiency comes together with a tradeoff factor of energy consumption. Thus, the need of the hour is an energy and bandwidth efficient technique. DS-CDMA is one of the competitive and most investigated technique in wireless communication which caters the large demand at the same time with limited bandwidth. Existing modulation techniques does not promise to provide better performance in case of higher noise. Therefore, one looks for a better BER stipulated modulation format to improve and enhance the performance of the system. This article revisits conventional Binary phase shift keying method and compares its performance in terms of BER with a special Extended Binary Phase Shift Keying (EBPSK) modulation format for a DS- CDMA system. EBPSK scheme is flexible and simple which is easily integrated in a network and assures improved and enhanced performance.
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Li, Miaofeng, Xi Xiao, Qi Yang, and Shaohua Yu. "40 Gbaud binary phase shift keying signal modulation using a substrate removed silicon modulator." Modern Physics Letters B 31, no. 19-21 (2017): 1740009. http://dx.doi.org/10.1142/s0217984917400097.
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Substrate removing technique is proposed in silicon Mach–Zehnder modulator (MZM) to improve the electro-optic bandwidth. Based on this technique, a silicon MZM with 3 dB electro-optical bandwidth of 55 GHz is achieved at 5 V reverse bias for the first time. The V[Formula: see text] L of the modulator is 1.3 V[Formula: see text]cm with an on-chip insertion loss of 5.4 dB. The substrate removing technique reduces the electrode transmission loss, achieves the electro-optical group index matching and realizes 50 [Formula: see text] impedance matching, simultaneously. In this work, we experimentally demonstrate BPSK modulation based on this modulator at the baud rate up to 56 Gb/s.
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Kumar Giri, Rajat, and Bijayananda Patnaik. "Bit Error Rate Performance Analysis of Hybrid Subcarrier Intensity Modulation-Based FSO with Spatial Diversity in Various Weather Conditions." Journal of Optical Communications 40, no. 3 (2019): 307–14. http://dx.doi.org/10.1515/joc-2017-0073.
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Abstract In this paper, we study the performance improvement of free space optical (FSO) communication system with spatial diversity techniques employing hybrid pulse position modulation-binary phase shift keying-subcarrier intensity modulation (PPM-BPSK-SIM). The involvement of multiple photo-detectors in diversity based FSO systems offers an effective way to overcome scntillation. In this paper, we have simulated the bit error rate (BER) with respect to different parameters like average SNR, link distance at various weather conditions. The simulation results are verified in Matlab environment with the mathematical analysis. The simulation results show that higher order single input multiple output (SIMO) system achieves better BER performance and hybrid PPM-BPSK-SIM has significant improved performance than the common modulation schemes like PPM, BPSK-SIM.
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Tadikamalla, Sairam Vamsi, Harish Chandra Mohanta, Sudheer Kumar Terlapu, and Vamshi Krishna Mandhapati. "Enhanced pulse shaping filters for minimizing interference in GFDM signals for 5G cellular networks." International Journal of Informatics and Communication Technology (IJ-ICT) 14, no. 1 (2025): 153. https://doi.org/10.11591/ijict.v14i1.pp153-163.
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The imminent rise of 5th generation (5G) wireless standards heralds a pivotal era in cellular communication. Among the challenges faced, selecting an optimal multiple access technique stands out as crucial for achieving the desired blend of low latency, high data rates, and throughput. Generalized frequency division multiplexing (GFDM) emerges as a promising can-didate meeting 5G requirements. This study introduces two innovative pulse shaping filters (PSFs) the better than raised cosine filter (BRCF) and modified bartlett hanning filter (MBHF) paired with various modulation schemes such as binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), and quadrature amplitude modulation (QAM) to assess GFDM signal performance. Considering its spectrum efficiency, QAM modulation emerges as the preferred choice. Performance evaluation of the PSFs entails analyzing symbol error rate (SER) against signal to noise ratio (SNR) across different modulation schemes.
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Sairam, Vamsi Tadikamalla, Chandra Mohanta Harish, Kumar Terlapu Sudheer, and Krishna Mandhapati Vamshi. "Enhanced pulse shaping filters for minimizing interference in GFDM signals for 5G cellular networks." International Journal of Informatics and Communication Technology 14, no. 1 (2025): 153–63. https://doi.org/10.11591/ijict.v14i1.pp153-163.
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The imminent rise of 5th generation (5G) wireless standards heralds a pivotal era in cellular communication. Among the challenges faced, selecting an optimal multiple access technique stands out as crucial for achieving the desired blend of low latency, high data rates, and throughput. Generalized frequency division multiplexing (GFDM) emerges as a promising can-didate meeting 5G requirements. This study introduces two innovative pulse shaping filters (PSFs) the better than raised cosine filter (BRCF) and modified bartlett hanning filter (MBHF) paired with various modulation schemes such as binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), and quadrature amplitude modulation (QAM) to assess GFDM signal performance. Considering its spectrum efficiency, QAM modulation emerges as the preferred choice. Performance evaluation of the PSFs entails analyzing symbol error rate (SER) against signal to noise ratio (SNR) across different modulation schemes.
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Munson, Nicholas R., Bill Correll, Justin K. A. Henry, Ram M. Narayanan, and Travis D. Bufler. "Design and Implementation of a Binary Phase-Shift Keying Frequency Diverse Array: Considerations and Challenges." Sensors 25, no. 1 (2025): 193. https://doi.org/10.3390/s25010193.
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The frequency diverse array (FDA) is an architecture capable of beamforming in both range and angle, improving upon the traditional phased array (PA) which can only achieve beamforming in angle. The FDA employing directional modulation (DM) for secure directional communications (SDC) can reduce bit error rates (BERs) in both range and angle, again improving upon the traditional PA which can only reduce BER in angle. In this paper, we document the challenges involved in the design and implementation of a two-element linear FDA employing fast-time binary phase-shift keying (BPSK) modulations. We also show that the experimentally collected field data match well with the results of simulations based on our analytical model.
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Qasaymeh, Mahmoud M. "Intelligent Receiver for Frequency Hopping Signals Using Deep Learning." International Journal of Electrical and Electronic Engineering & Telecommunications 13, no. 5 (2024): 366–73. http://dx.doi.org/10.18178/ijeetc.13.5.366-373.
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This paper presents a promising Deep-Learning (DL) approach for accurate symbol detection in a slow Frequency Hopping (SFH) wireless communication System under a Narrow Band (NB) multipath channel fading. A feedforward neural network with three layers of input, hidden, and output was employed for deep learning. The neural network is designed to take 80 features as input, representing the received signal samples at the receiver. The neural network is trained to anticipate the transmitted symbol based on the provided training dataset, utilizing different modulation techniques, including Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), 8-PSK, and 16-PSK. Additionally, computer simulations are conducted to verify the effectiveness of the proposed method across various modulation schemes. The generated training loss and validation loss curves confirmed the ability of the receiver to learn.
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Mahato, Rajat Kumar. "Performance Analysis of BPSK Modulation: A Theoretical Approach." International Journal for Research in Applied Science and Engineering Technology 12, no. 2 (2024): 758–63. http://dx.doi.org/10.22214/ijraset.2024.58375.
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Abstract: Binary Phase Shift Keying (BPSK) represents a fundamental modulation technique extensively utilized within digital communication systems. The present study presents an analytical examination of BPSK modulation, with a specific focus on its theoretical aspects, MATLAB implementation, and performance analysis. The article commences by providing an introduction to modulation techniques and a concise overview of BPSK, emphasizing its significance and applications. Theoretical foundations encompassing the mathematical representation, key parameters, and characteristics of BPSK are thoroughly deliberated upon. Performance metrics, namely the bit error rate (BER) and signal-to-noise ratio (SNR), are scrutinized, incorporating theoretical derivations and analysis. Following this, the implementation of BPSK modulation and demodulation in MATLAB is expounded, supplemented by coding algorithms and code snippets. Empirical results acquired from the MATLAB implementation are presented and scrutinized, alongside a comparison to the theoretical analysis. The article concludes by summarizing the principal findings and contributions, accentuating the advantages and limitations associated with BPSK modulation, and suggesting potential avenues for future research within this domain. By concentrating on the theoretical aspects and providing comprehensive derivations and mathematical analysis, this research enhances our understanding and exploration of BPSK modulation, thereby circumventing the reliance on simulation-based methodologies
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Vikas, Agrawal, Basak Koushik, and Kumar Bahl Rajesh. "Analytical research on optical phase shift modulation scheme with maximum modulation efficiency for analog and digital signals." i-manager's Journal on Communication Engineering and Systems 11, no. 2 (2022): 1. http://dx.doi.org/10.26634/jcs.11.2.19048.
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This paper presents the analytical research and characterization of optical Binary Phase Shift Keying (BPSK) for single-tone sinusoidal and digital signals. The mathematical analysis and simulation for optimal modulation depth are proposed in this paper for maximum efficiency of the output modulated signal. The modulation depth is analysed with suitable Radio Frequency (RF) drive voltage for message signal and the effect of modulation depth on carrier suppression and higher order harmonics over fundamental tone is analysed theoretically and with simulation. To achieve phase modulation in this work, an external modulation technique via the Mach-Zehnder Modulator (MZM) is used, and an optical source using a narrow line width Distributed Feed Back (DFB) laser is used to minimise phase noise. The simulation and characterization results strongly support the mathematical analysis of the proposed criteria for suitable RF drive over half wave voltage for optimal detection and maximum message signal efficiency.
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Chu, Yi, and Wei Yau Horng. "A Beamformer Employing Pseudo-Interference Technique for Digital Communication Systems." Advanced Materials Research 403-408 (November 2011): 1214–17. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.1214.
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This paper presents a new receiver for antenna array to provide robustness against adaptive array imperfections. These imperfections include the array gain errors and the directional mismatch. The superior performance of the proposed receiver is primarily achieved by adding an injected pseudo-interference in the diagonally loaded Capon beamformer. Simulation results demonstrate that the proposed method has excellent performance for both binary phase shift keying (BPSK) and quadrature amplitude modulation (QAM) systems.
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Kaushik, Rahul, Vineet Khandelwal, and R. C. Jain. "An Approximation for BER of Optical Wireless System under Weak Atmospheric Turbulence using Point Estimate." Journal of Optical Communications 40, no. 4 (2019): 473–79. http://dx.doi.org/10.1515/joc-2017-0119.
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Abstract Obtaining analytically closed-form expression for bit error rate (BER) of an optical wireless communication (OWC) system under weak atmospheric turbulence is extremely difficult and intractable. In this paper, a simple closed-form approximate expression for average BER of OWC system under weak turbulence condition is obtained using point estimate method. The proposed expression is used to compute the BER for on-off keying (OOK) and sub carrier intensity modulated (SIM) binary phase shift keying (BPSK) modulation schemes. Results obtained using proposed expression are compared with those obtained using Gauss-Hermite quadrature approximation and Monte-Carlo simulations.
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Abdullah, Hikmat Najem, and Ibrahim Fahmi Ali. "Design of Chaotic Bifurcation Parameter Modulation Scheme using Mean Value Estimation." Iraqi Journal of Information & Communications Technology 1, no. 1 (2018): 52–61. http://dx.doi.org/10.31987/ijict.1.1.13.
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In this paper, the bifurcation parameter of the chaotic map is estimated accurately by utilizing the ergodic properties of a chaotic dynamical signal. Binary Phase Shift Keying Ergodic Chaotic Parameter Modulation (BPSK-ECPM) scheme is used to modulate the information signal in the bifurcating parameter of the chaotic map. A mean value estimation technique is used at the receiver to retrieve the original information accurately. This method minimizes the computational complexity of the receiver; thereby, reduces the total manufacturing cost. Simulation results confirm that, in AWGN channel and at bit error rate (BER) of 10-3, BPSK-ECPM achieves gains in Eb/N0 of about 0.7dB and 5dB in comparison with conventional direct sequence spread spectrum with BPSK modulation (DS-SS BPSK) and conventional ergodic chaotic parameter modulation spread spectrum (ECPM-SS) systems respectively. The results also confirm that in Rayleigh fading channel and at BER of 10-3, BPSK-ECPM achieves gains in Eb/N0 of about 6.3dB and 1.6dB in comparison with DS-SS BPSK and ECPM-SS systems respectively, which make BPSK-ECPM an ideal candidate for the intelligent transportation system (ITS).
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Zhang, Hongye, Hongxing Wang, Zhengyun Jiang, and Lushan Ding. "Parameters estimation of hybrid modulated signal combining BPSK and LFM Based on Born-Jordan Distribution." Journal of Physics: Conference Series 2525, no. 1 (2023): 012008. http://dx.doi.org/10.1088/1742-6596/2525/1/012008.
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Abstract Aiming at the problem of the estimation of hybrid modulated signal combining Binary Phase Shift Keying and Linear Frequency Modulation (LFM-BPSK), the existing methods have low estimation accuracy in low SNR. To solve this problem, the algorithm based on Born-Jordan time-frequency distribution (BJD) is proposed, which uses the Hough transform (HT) to estimate the initial frequency and chirp rate of LFM-BPSK signal, and then estimates the code element width by dimensionality reduction time-domain signal. Finally, simulation experiments show that the parameter estimation accuracy of the proposed algorithm under low SNR is significantly better than that of existing algorithms, and the performance is close to MCRLB.
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Al-Shably, Zainab Hdeib, and Ghadeer I. Maki. "DWT-OFDM forCompressed Image Transmission." Al-Furat Journal of Innovations in Electronics and Computer Engineering 3, no. 2 (2024): 56–64. http://dx.doi.org/10.46649/fjiece.v3.2.5a.14.5.2024.
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All existing communications systems require high-speed data transmission rates, as all services today demand high transmission speeds and data transmission dependability, and communications are an essential aspect of daily life. One of the most important modulation techniques used in both wired and wireless communication networks is Orthogonal Frequency Division Multiplexing (OFDM). It is a cutting-edge technology for achieving high-speed digital communication. In this work, compression Images by Discrete Wavelet Transform and transmission over DWT-OFDM, and used different baseband modulation schemes such as Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Key (QPSK), Quadrature amplitude modulation (16QAM), and (64QAM) has been considered.From numerical simulation results, it is observed that produced better quality images at the receiver when the Quarter Amplitude Modulation is 16QAM and 64QAM with high SNR
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Telagam, Nagarjuna, Y.L. Ajay Kumar, V.R. Seshagiri Rao, Menakadevi Nanjundan, Seetha Chaithanya, and Nehru Kandasamy. "Implementation of IEEE 802.11p for Vehicular Communication: Utilizing NI USRP N321 to Advance Mobile Interactive Technologies." International Journal of Interactive Mobile Technologies (iJIM) 19, no. 09 (2025): 19–30. https://doi.org/10.3991/ijim.v19i09.52259.
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This paper aims to comprehensively implement the Institute of Electrical and Electronics Engineers (IEEE) 802.11p transceiver using the Universal Software Radio Peripheral (USRP) device N321 series for teaching undergraduates. It is a standard in the 802.11 family designed explicitly for wireless access in vehicular environments (WAVE). This process involves configuring the USRP N321 device with IEEE standards, such as adjusting the frequency, amplitude, transmitter gain, direction of the radiation pattern, receiver gain, etc. This transceiver uses an orthogonal frequency division multiplexing (OFDM) modulation scheme. This IEEE 802.11p transceiver provides a practical approach for students and researchers in the realworld platform to analyze wireless communication technologies such as OFDM transceiver, peak-to-average power ratio (PAPR) values, and constellation diagrams for various modulation schemes such as binary phase shift keying (BPSK), quadrature amplitude modulation (QAM), and quadrature phase shift keying (QPSK) with different code rates. The bit error rate values were calculated for the modulation coding schemes index, and data rates of 24 Mbps were achieved for this transceiver.
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Jiang, Zhao, Liu, et al. "Performance Improvement for Mixed RF–FSO Communication System by Adopting Hybrid Subcarrier Intensity Modulation." Applied Sciences 9, no. 18 (2019): 3724. http://dx.doi.org/10.3390/app9183724.
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The improvement for hybrid radio frequency–free space optical (RF–FSO) communication system in wireless optical communications has acquired growing interests in recent years, but rarely improvement is based on hybrid modulation. Therefore, we conduct a research on end-to-end mixed RF–FSO system with the hybrid pulse position modulation–binary phase shift keying–subcarrier intensity modulation (PPM–BPSK–SIM) scheme. The RF link obeys Rayleigh distribution and the FSO link experiences Gamma–Gamma distribution. The average bit error rate (BER) for various PPM–BPSK–SIM schemes has been derived with consideration of atmospheric turbulence influence and pointing error condition. The outage probability and the average channel capacity of the system are discussed as well. Simulation results indicate that the pointing error aggravates the influence of atmospheric turbulence on the channel capacity, and the RF–FSO systematic performance is improved obviously while adopting PPM–BPSK–SIM under strong turbulence and severe pointing error conditions, especially, when the system average symbol length is greater than eight.
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Murtianta, Budihardja. "Sistem Modulator dan Demodulator BPSK dengan Costas Loop." Techné : Jurnal Ilmiah Elektroteknika 14, no. 01 (2015): 17–26. http://dx.doi.org/10.31358/techne.v14i01.120.
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Pada tulisan ini akan dibahas suatu sistem transmisi data berbasis BPSK (Binary Phase Shift Keying) menggunakan Costas Loop pada demodulatornya. Pada prinsipnya Costas Loop adalah bentuk khusus dari PLL yang difungsikan untuk melakukan demodulasi sinyal-sinyal yang termodulasi secara supressed-carrier. Costas Loop menggunakan umpan balik negatif untuk melakukan carrier recovery, kemudian sinyal pembawa yang dihasilkan digunakan untuk melakukan demodulasi sinyal BPSK-nya. Sistem ini terdiri dari modulator dan demodulator BPSK yang menggunakan format Non Return Zero Bipolar. Pada sistem modulator BPSK akan menghasilkan isyarat Ac cos(ωct) untuk menyatakan ”high” dan - Ac cosωct untuk menyatakan ”low” sedang pada sistem demodulator BPSK akan menghasilkan aras ”high” untuk isyarat yang sefasa dan menghasilkan aras ”low” untuk isyarat berbeda fasa 180°.
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Farzamnia, Ali, Ngu War Hlaing, Lillian Eda Kong, Manas Kumar Haldar, and Tohid Yousefi Rezaii. "Investigation of error performance in network coded MIMO-VBLAST wireless communication systems." Journal of Electrical Engineering 70, no. 4 (2019): 273–84. http://dx.doi.org/10.2478/jee-2019-0057.
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Abstract Paper aims to enhance the performance of bit error rate (BER) in wireless communication based on the multiple-input multiple-output (MIMO) system of vertical Bell laboratories layered space-time (VBLAST) algorithm. The VBLAST algorithm uses zero-forcing (ZF) and the minimum mean square error (MMSE) to evaluate the BER of wireless communication. MIMO VBLAST techniques function as an adaptive filter and can minimize the interference and multipath fading in the received signal of the channel. Physical layer network coding (PNC) is a new technique used to exploit the spatial diversity of the MIMO VBLAST system to improve the throughput and performance of wireless communication. The bit-error-rate (BER) of proposed VBLAST MIMO with PNC with binary phase-shift keying (BPSK) and quadrature phase-shift keying (QPSK) modulation over the additive white Gaussian noise and Rayleigh fading channel are analyzed. The performance of both BPSK and QPSK modulation in two and four antennas are compared. From the simulation results, it was found that the proposed scheme MIMO VBLAST PNC has a 45.2 % higher BER performance compared to the traditional MIMO scheme with an increase in the BER using MMSE and ZF respectively in both two and four antennas.
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Wulandari, Sholihah Ayu, Tri Budi Santoso, I. Gede Puja Astawa, and Muhamad Milchan. "Pemodelan Non-uniform Coded-Modulation pada Kanal Akustik Bawah Air di Lingkungan Perairan Dangkal." INOVTEK POLBENG 9, no. 1 (2019): 38. http://dx.doi.org/10.35314/ip.v9i1.890.
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In this paper, presented an OFDM performance evaluation with the Non-uniform Coded-Modulation in the underwater acoustic channel in shallow water. A row of binary information is encoded by BCH code (7.4) for error correction and combined with Non-uniform modulation which is the result of modification of the subcarrier arrangement of the OFDM standard IEEE 802.11a. Modeling uses 52 subcarriers consisting of 4 pilots and 48 subcarrier data which are divided into three parts, i.e.: 24 subcarrier data with 16-Quadrature Amplitude Modulation (16-QAM) modulation, 12 subcarrier data with Quadrature phase-shift keying (QPSK) modulation and 12 other data subcarriers with Binary key-shift keying (BPSK) modulation. The channel type used describes the Additive White Gaussian Noise (AWGN) condition and is the result of measurement data. The analysis is done in terms of Signal-to-Noise-Ratio (SNR) and Bit Error Rate (BER) show that the value of the error rate of 0.001, modulation of BPSK, QPSK, 16-QAM, and Non-uniform modulation required the power each 5 dB, 8.5 dB, 10.3 dB, and 7.9 dB. However, the proposed system is able to suppress the required power up to 6 dB. The proposed system also shows better performance than fixed modulation and Non-uniform Modulation, which in this case with low power to achieve the same error rate. In addition, the proposed system has a coding gain of 1.9 dB compared to a non-uniform modulation system. Real testing is also done with measurement data at Mangrove estuary, Surabaya. The results show performance similar to simulations performed on Gaussian noise channels.
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Cuu, Ho Van, Hoang Hiep Le, and Nguyen Thi Thu-Hang. "EFFICIENT ANALYSIS OF MIMO-OFDM SYSTEM IN NAKAGAMI-m FADING CHANNEL." Vietnam Journal of Science and Technology 54, no. 6 (2016): 698. http://dx.doi.org/10.15625/0866-708x/54/6/8311.
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Bit error rate (BER) and symbol error rate (SER) performance response fading parameter for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system over Nakagami-m fading channel would be provided in this study. Some channel simulations and evaluations were for 2×2 MIMO-OFDM system in which data are sent from two transmit antennas to two receive antennas. In this study, authors have used binary phase-shift keying (BPSK) and quadrature phase-shift keying (QPSK) modulation techniques to modulate the data stream. In addition, numerical results have been presented and compared for several different environmental propagations such as Nakagami-m, Rician, Rayleigh multipath fading channels, and non-fading additive white Gaussian noise (AWGN) channel. Based on such obtained presentation and comparison, the paper would discuss further about relation between value of paramater m and quality of system.
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Ishida, Taiga, and Hiroki Kishikawa. "Modulation format conversion between BPSK and 8QAM signals using coherent interference and four-wave mixing." Japanese Journal of Applied Physics 63, no. 6 (2024): 06SP01. http://dx.doi.org/10.35848/1347-4065/ad4891.
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Abstract Optical fiber networks need to transmit various types of client data with different requirements of bandwidth, reach, latency, and capacity by interconnecting backbone, metro, and local access networks. Since the optimal modulation format usually differs, it should be efficiently converted at the intermediate node connecting different networks. Among the multilevel modulation format, 8-ary quadrature amplitude modulation (8QAM) is a candidate for terrestrial networks thanks to the good balance between spectral efficiency and transmission distance. In this paper, we propose modulation format conversion systems from binary phase shift keying (BPSK) to 8QAM using coherent interference in delay interferometer and its reverse conversion system using four-wave mixing in a single highly nonlinear fiber. Conversion performances are numerically evaluated based on bit error rate, constellation diagrams, 8QAM and BPSK propagation lengths, and parameters in electrical signal regeneration. As a result, error-free format conversion is achieved for both conversion systems.
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Khadim, Rania, Mohammed Erritali, and Abdelhakim Maaden. "Performance Study of IEEE 802.15.4 under OPNET Modeler for Wireless Sensor Networks." TELKOMNIKA Indonesian Journal of Electrical Engineering 16, no. 1 (2015): 98. http://dx.doi.org/10.11591/tijee.v16i1.1593.
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The IEEE 802.15.4 protocol has recently been adopted as a communication standard for low-rate wireless personal area networks (LR-WPANs) due to its low data rate, low power consumption and low cost of Wireless Personal Area Networks. This protocol is quite flexible for a wide range of applications if appropriate tuning of its parameters is carried out. Importantly, the protocol also provides real-time guarantees by using the Guaranteed Time Slot (GTS) mechanism. Indeed, the GTS mechanism is quite attractive for Wireless Sensor Network (WSN) applications. The main objective of this paper is to investigate the performance of BPSK (Binary phase shift keying) and QPSK (Quadrature phase shift keying) modulation techniques. Investigations have been reported to compare the performance of the two modulation schemes. Here modulation schemes have been identified which gives significant performance improvement over the other based on network output load, energy consumption and power reception at the WPAN devices. The results have been presented Pan_Coordinator, GTS and Non GTS End Device (CAP device) of Wireless Sensor Network (WSN).
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Sari, Sapriesty Nainy. "Kinerja Modulasi BPSK Modem Software Defined Radio pada DSK TMS320C6713." Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems) 10, no. 1 (2016): 1–4. http://dx.doi.org/10.21776/jeeccis.v10i1.424.
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Abstract— Software Defined Radio (SDR) is a signal processing technology that optimizes the use of PC as a device supporting. With the application of SDR in wireless communication system so it will provide possibility and flexibility on manipulating DSP without the need of hardware changes. SDR modems are designed to take advantage of Digital Signal Processor Starter Kit (DSK) TMS320C6713 for baseband signal processing. In the implementation phase, the DSK is programmed directly using Matlab Simulink integration to build a system of modulation and demodulation Binary Phase Shift Keying (BPSK). Sampling frequency 8000 kHz is used with a variety of bit rate of 1 kbps and 2 kbps.
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Scerri, Jeremy, Barnaby Portelli, Ivan Grech, Edward Gatt, and Owen Casha. "A MEMS BPSK to ASK converter." Microelectronics International 36, no. 1 (2019): 26–34. http://dx.doi.org/10.1108/mi-06-2018-0039.
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Purpose The purpose of this paper is to investigate the feasibility of using micro electromechanical systems (MEMS) to convert a binary phase shift keying (BPSK) signal to a simpler amplitude shift keying (ASK) scheme. Design/methodology/approach The prototype is designed within the SOIMUMPs® fabrication process constraints. The fabrication constraints imposed geometric limitations on what could be tested. These constraints were used to build a mathematical model, which in turn was used to optimize the response using MATLAB®. The optimized design was tested using finite element analysis with CoventorWare®, and finally lab tests on the fabricated device were performed to confirm theoretical predictions. Findings Theoretical predictions compared well with lab measurements on a prototype device measuring 2.9 mm2. The prototype was tested with a carrier frequency of 174 kHz at a BPSK data rate of 3 kHz and carrier amplitude of 6 V. With these parameters, ASK modulation indices of 0.96 and 0.94 were measured at the two output sensors. Originality/value This study provides a MEMS solution for BPSK to ASK conversion. The study also identifies what limits betterment of the modulation index and data rate. Such a device has potential application in wireless sensor network (WSN) nodes that have energy harvesters and sensors that are also built in MEMS. Being a MEMS device, it can facilitate integration in such WSN nodes and, hence, potentially reduce size and costs.
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Bisma, Pal singh Ravinder, Gill Jasmeen, and Monika Mehra Dr. "A Hybrid Approach for Optimized Resource Allocation in a Deployed 4G Long Term Evolution (LTE) Network." International Journal of Innovative Research in Computer Science & Technology (IJIRCST) 11, no. 1 (2023): 68–72. https://doi.org/10.5281/zenodo.7661031.
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A 4G system is expected to provide an all-inclusive and secure all-IP based mobile broadband solution to laptop, wireless modems, computer, smart phones, and other mobile devices. Although many studies were conducted in the past, there are still many challenges to be met when resource allocation is to be performed in an optimal manner. In the light of the same, a hybrid approach for optimized resource allocation is proposed in a deployed 4G Long Term Evolution (LTE) network. For this to accomplish, firstly a comparative study of the state-of-the-art models has been performed to find out the most optimal method for resource allocation and then propose a hybrid approach to blend the merits of two or more techniques. So, in this article, four main techniques, namely, Binary Phase Shift Keying modulation (BPSK), Quadrature Phase Shift Keying (QPSK), Quadrature amplitude modulation (QAM), Orthogonal Frequency Division Multiplexing (OFDM), as modulation techniques have been compared. Since, OFDM outperformed the other modulation techniques, so, it has been integrated with QPSK and OFFT to obtain the most optimal resource allocation. Experimental results show that the proposed technique is simple and robust, and quite promising in the near future for deployed 4G LTE networks.
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Singh, Nitin Shankar, and Gurpartap Singh. "Performance Evaluation of Log-normal And Negative Exponential Channel Modeling Using Various Modulation Techniques in OFDM-FSO Communication." INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY 4, no. 2 (2005): 639–47. http://dx.doi.org/10.24297/ijct.v4i2c2.4189.
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Free Space Optics (FSO) is one of the emerging technology which is thoroughly being popular and is basically using optical signals for the communication. The paper evaluates the bit error rate performance of the Free space Optics (FSO) system. To design a high performance communication link for the atmospheric FSO channel, it is of great importance to characterize the channel with proper model. The performance of the highly efficient, high data rate system is limited by the certain constraints like scintillation effects and atmospheric turbulence. The FSO communication system using Orthogonal Frequency Division Multiplexing (OFDM) technique which is known for its increased robustness against frequency selective fading, narrow-band interference and high channel efficiency. The performance of the modulation techniques- Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK) and 8-PSK are studied in the Lognormal and Negative Exponential channel. The obtained results are the comparative study of Bit Error Rate (BER) vs. Signal to Noise Ratio (SNR), which is quite useful for analyse the system performance with different channel models for various modulation techniques.
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Wang, Zhong Xun, and Xing Long Gao. "Design of Modified Minsum Decoder of LDPC Code in the Simplified Difference-Domain." Applied Mechanics and Materials 385-386 (August 2013): 1576–81. http://dx.doi.org/10.4028/www.scientific.net/amm.385-386.1576.
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In this paper, we propose the modified minsum decoding algorithm of LDPC(Low-Density Parity-Check) code in the simplified difference-domain on the basis of detailed analysis of LDPC decoding algorithm in difference-domain. The simulation indicates that the proposed decoding algorithm offers almost no performance degradation compared with the BP(Belief Propagation) decoding algorithm in log-domain and the decoding algorithm in difference-domain and offers better performance than minsum decoding algorithm in log-domain and greatly reduces the computation complexity in AWGN(Additive White Gaussian Noise) channel and under BPSK(Binary Phase Shift Keying) modulation.
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Saab, Samer S., Joe Khalife, and Rayana H. Jaafar. "A Multiple-Access Time and Frequency Spectrum-Spreading Modulation." Wireless Communications and Mobile Computing 2018 (October 25, 2018): 1–10. http://dx.doi.org/10.1155/2018/8920746.
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In this paper a novel modulation scheme called Carrier Interleaved Multiple Access (CIMA) is proposed. CIMA provides an alternative for multiple-access modulation accommodating resistance to noise and channel interference. The approach is based on polar signaling modulated with an FM-like composite sinusoidal function. The user assigned frequency deviation and modulation index are strictly related and unique. The latter parameters are generated using a nontraditional pseudorandom noise generator (PRNG). This PRNG provides CIMA with low interference capability between cochannels and adjacent channels. CIMA can be considered for a single-user or multiple-access technique. Selected CIMA characteristics are presented. In order to numerically illustrate the effectiveness of the proposed modulation scheme, the performance of CIMA is compared with the conventional direct-sequence spread spectrum binary phase-shift keying (DSSS-BPSK) modulation.
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Vivek, Raj Kempanna, and Puttaraje Gowda Dinesha. "Design of an efficient binary phase-shift keying based IEEE 802.15.4 transceiver architecture and its performance analysis." International Journal of Electrical and Computer Engineering (IJECE) 12, no. 6 (2022): 6332–40. https://doi.org/10.11591/ijece.v12i6.pp6332-6340.
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The IEEE 802.15.4 physical layer (PHY) standard is one of the communication standards with wireless features by providing low-power and low-data rates in wireless personal area network (WPAN) applications. In this paper, an efficient IEEE 802.15.4 digital transceiver hardware architecture is designed using the binary phase-shift keying (BPSK) technique. The transceiver mainly has transmitter and receiver modules along with the error calculation unit. The BPSK modulation and demodulation are designed using a digital frequency synthesizer (DFS). The DFS is used to generate the in-phase (I) and quadrature-phase (Q) signals and also provides better system performance than the conventional voltagecontrolled oscillator (VCO) and look up table (LUT) based memory methods. The differential encoding-decoding mechanism is incorporated to recover the bits effectively and to reduce the hardware complexity. The simulation results are illustrated and used to find the error bits. The design utilizes less chip area, works at 268.2 MHz, and consumes 108 mW of total power. The IEEE 802.15.4 transceiver provides a latency of 3.5 clock cycles and works with a throughput of 76.62 Mbps. The bit error rate (BER) of 2×10-5 is achieved by the proposed digital transceiver and is suitable for real-time applications. The work is compared with existing similar approaches with better improvement in performance parameters.
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C., Manikandan, Neelamegam P., Kumar S.Rakesh, Venkat Babu G., and Siva Satwik Kommi Sai. "Design of Secure and Reliable MU-MIMO Transceiver System for Vehicular Networks." International Journal of Computer Networks & Communications (IJCNC) 11, no. 2 (2019): 15–32. https://doi.org/10.5281/zenodo.2649871.
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ABSTRACT MU-MIMO (Multi-User MIMO) has been a promising technique for vehicular networks to achieve faster communication. Conventional MU-MIMO transceiver is designed with One-dimensional (1-D) improper modulation schemes such as Binary Phase Shift Keying (BPSK) and Multilevel Amplitude Shift Keying (MASK) failed to yield standard ABER (average bit error rate). To achieve high reliability, a novel MUMIMO uplink transceiver system is designed under PAPC (Per-Antenna Power Constraint) by assuming perfect and imperfect channel state information (CSI). MIMO communication channels are perceptible. Hence, security of the proposed system is improved by novel pseudorandom key generation technique using randomized synthetic colour image. Analytical design for proposed systems is carried and simulated for various p-norm constraints. Simulation results show higher reliability and security than the existing system. It also satisfies the linearity constraint of a power amplifier, which makes the system more suitable for practical applications.
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Mizeraczyk, Jerzy, Ryszard Studanski, Andrzej Zak, and Agnieszka Czapiewska. "A Method for Underwater Wireless Data Transmission in a Hydroacoustic Channel under NLOS Conditions." Sensors 21, no. 23 (2021): 7825. http://dx.doi.org/10.3390/s21237825.
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Wireless data transmission in the hydroacoustic channel under non-line-of-sight (NLOS) propagation conditions, for example, during a wreck penetration, is difficult to implement reliably. This is mostly due to the multipath propagation, which causes a reduction in the quality of data reception. Therefore, in this work an attempt has been made to develop a reliable method of wireless underwater communication test it under the NLOS conditions. In our method, we used multiple frequency-shift keying (MFSK) modulation, sending a single bit on two carriers, and diversity combining. The method was tested in laboratory conditions which simulated underwater signal propagation during the penetration of the wreck. The propagation conditions were investigated by determining the impulse responses at selected measurement points using the correlation method. Additionally, for comparison, the data transmission quality was determined by the bit error rate (BER) under the same conditions using direct sequence spread spectrum (DSSS) and binary phase shift keying (BPSK) modulation. The obtained results confirmed the usefulness of the application of the developed method for wireless data transmission in a hydroacoustic channel under NLOS conditions.
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Bauk, Sanja, Anke Schmeink, and Joan Colomer. "Employing Wireless Networks in Enhancing Occupational Safety at the Developing Seaport – Two Proposals." Polish Maritime Research 24, no. 1 (2017): 115–24. http://dx.doi.org/10.1515/pomr-2017-0013.
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AbstractThe paper proposes two Wireless Body Area Network Sensors (WBANSs) scenarios at the logical and simulation levels for improving occupational safety and health conditions at the developing seaport environment. The Port of Bar (Montenegro) is taken as an exemplar. The logical model is based on the actual position of the Port of Bar at the seaport market, its needs and capacities for the information systems innovation through technology transfer and diffusion. The simulation model analyses the channel between the body central unit (BCU) of the worker’s on port wireless body sub-network and the port access point. The quality of the signal transmission at the physical layer has been tested through a source code generated in the Matlab. The code includes the BCU composite signal modulation, transmission, and demodulation, along with a noise and fading effects analysis. The results of the simulation experiments for the different transmission frequencies and distances between transmitter (worker’s BCU) and receiver (port’s access point) by using binary phase-shift keying (BPSK) and quadratic phase-shift keying (QPSK) modulation schemes are presented. Some directions for further investigations in this field are given, as well.
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Ahmed, Aliyu, and Adeyemi Abel Ajibesin. "Performance of Modulation Techniques over AWGN and Multipath Fading Channels." Advances in Science and Technology 107 (June 28, 2021): 182–93. http://dx.doi.org/10.4028/www.scientific.net/ast.107.182.
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The essence of my paper is to intricately look at data transfer with various modulation techniques over various communication channels. And run simulations to uncover the Bit Error Rate (BER) of various relevant scenarios. I will evaluate the performance of modulation techniques from Binary Phase Shift Keying (BPSK or 2PSK) to 16PSK and other modulation techniques with the consideration of time. Their performance will be evaluated and analyzed by calculating their probability of bit error rate (BER) versus the Energy per bit to spectral noise density (Eb/No) over various wireless channel models such as the Additive White Gaussian Noise (AWGN), Rayleigh channel and Ricean channel. My simulation results will graphically display the effective performance of each communication scenario; it will give us a better understanding of why performances of data communications techniques.
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Wang, Hao-Yu, and Jyh-Ching Juang. "Retrieval of Ocean Surface Wind Speed Using Reflected BPSK/BOC Signals." Remote Sensing 12, no. 17 (2020): 2698. http://dx.doi.org/10.3390/rs12172698.
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The Global Navigation Satellite System (GNSS) has become a valuable resource as a remote sensing technique. In the past decade, the use of reflected GNSS signals for sensing the Earth, also known as GNSS reflectometry (GNSS-R), has grown rapidly. On the other hand, with the continuous development of GNSS, multi-frequency multi-modulation signals have been used to enhance not only positioning performance, but also remote sensing applications. It is known that for some constellations, navigation satellites broadcast signals employing BPSK (binary phase-shift keying) modulation and BOC (binary offset carrier) modulation at the same frequency band. This paper proposes a new GNSS-R measurement, called a composite delay-Doppler map (cDDM), by utilizing the received reflected GNSS signals with different modulation techniques for the purpose of retrieving wind speed. The GNSS-R receiver can receive BPSK and BOC signals simultaneously at the same frequency band (e.g., GPS III L1 C/A and L1C or QZSS L1 C/A and L1C) and process the signals to generate GNSS-R measurements. Exploration of the observable features extracted from the composite DDM and the wind speed retrieval algorithm are also provided. The simulation verifies the proposed method under a configuration that is specified for the orbital and instrument specification of the upcoming TRITON mission.
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Zia, Muhammad Yousuf Irfan, Raúl Tierno, Miguel-Ángel Luque-Nieto, and Pablo Otero. "An Energy-Efficient Integration of a Digital Modulator and a Class-D Amplifier." Electronics 9, no. 8 (2020): 1319. http://dx.doi.org/10.3390/electronics9081319.
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Energy consumption is always a key feature in devices powered by electric accumulators. The power amplifier is the most energy-demanding module in mobile devices, portable appliances, static transceivers, and even nodes used in underwater acoustic networks. These devices incorporate a modulator, typically a pulse-width modulation (PWM) and a class-D power amplifier, for higher efficiency. We propose a technique to integrate the modulator of a transmitter and PW-modulator of a class-D amplifier to improve the overall efficiency of the system. This integrated set operates as an up-converter, phase modulator (PM), and binary phase-shift keying (BPSK) modulator under certain conditions. The theoretical concept is verified using Matlab and a model is designed and simulated in Simulink. For validation purposes, an electronic circuit is built and tested using Multisim. The results obtained by simulations and circuit implementation show that the proposed integrated system is an energy-efficient and cost-effective solution compared to conventional techniques.
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Z.K., Adeyemo, and Raji T.I. "EFFECT OF DIVERSITY COMBINING IN MOBILE TERRESTRIAL ENVIRONMENT." Continental J. Engineering Sciences 5, no. 1 (2010): 27–37. https://doi.org/10.5281/zenodo.833737.
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Mobile communications have experienced massive growth in recent years. It is also in high demand nowadays. However, these systems suffer from much impairment such as multipath propagation effects and thermal noise. The study investigates the effect of using Binary Phase Shift Keying (BPSK) and Binary Differential Phase Shift Keying (BDPSK) with Maximal Ratio Combiner (MRC) which will improve the overall system performance better in mobile environment so that the transmitted signal can be retrieved at the receiver with minimum error. The effects of the mobile communication environment which hindered the transmitted signals were first studied. The system model for processing the received signal at mobile speed of 30 km/h in two different channels; Additive White Gaussian Noise (AWGN) and mobile terrestrial channels was developed and simulated. Randomly produced data and water lilies image were used as source data which were gray encoded, processed by BPSK and BDPSK schemes, properly filtered by square root raised cosine filter. These signals were then passed through the mobile multipath Rayleigh environment and AWGN. Then at the receiver, MRC combined two strong paths to evaluate the performances which were measured in term of Average Bit Error Rate (BER) and image quality. The simulation was carried out using MATLAB 7.4 application package. The results show that the performance of BDPSK signaling scheme was found to be better than BPSK scheme giving lower Average BER indicating lower erroneous bits at the same point when transmitting the same number of bits. Moreover, the received image quality was also in agreement with the performance when randomly produced source data was used. In mobile communication, good quality of service is the major concern, because it changes business more than anything else and the system suffers from impairment. Adoption of fade margin or continue increasing the transmitted power is also inefficient. Hence modulation with diversity is essential. In line with this, the results indicate that modulation schemes are quite effective in combating channel impairment and can be used as references for the design of new reduced error system.
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Yuan, Jia, Xiaoyi Wang, Meng Jin, et al. "A Novel System of Mixed RF/FSO UAV Communication Based on MRR and RIS by Adopting Hybrid Modulation." Photonics 9, no. 6 (2022): 379. http://dx.doi.org/10.3390/photonics9060379.
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In this paper, we propose a mixed radio frequency (RF)/free space optical (FSO) unmanned aerial vehicle (UAV) communication system, based on modulating retro-reflector (MRR) and reconfigurable intelligent surface (RIS), which adopts the hybrid L-ary pulse position modulation-binary phase shift keying-subcarrier intensity modulation (L-PPM-BPSK-SIM). More specifically, the RF channel follows Rayleigh distribution, while the FSO channel obeys Gamma–Gamma distribution that considers atmospheric turbulence and pointing error. For decode-and-forward (DF) relay, the MRR is installed on the UAV to reduce its weight, size, and power consumption. In particular, the RIS is used as user terminal along with the RF signal generator to achieve signal enhancement. Based on this, closed expressions for the outage probability, average bit error rate (BER) and average channel capacity of the end-to-end uplink and downlink are derived. Numerical results confirm that while the relay limitation is solved by MRR, RIS significantly reduces the outage probability and average BER as well as obviously increases the average channel capacity. Furthermore, the hybrid L-PPM-BPSK-SIM with average symbol length greater than eight can effectively improve the average BER performance of the system.
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Kempanna, Vivek Raj, and Dinesha Puttaraje Gowda. "Design of an efficient binary phase-shift keying based IEEE 802.15.4 transceiver architecture and its performance analysis." International Journal of Electrical and Computer Engineering (IJECE) 12, no. 6 (2022): 6332. http://dx.doi.org/10.11591/ijece.v12i6.pp6332-6340.
Full textAbstract:
<span lang="EN-US">The IEEE 802.15.4 <a name="_Hlk109306810"></a>physical layer (PHY) standard is one of the communication standards with wireless features by providing low-power and low-data rates in wireless personal area network (WPAN) applications. In this paper, an efficient IEEE 802.15.4 digital transceiver hardware architecture is designed using the binary phase-shift keying (BPSK) technique. The transceiver mainly has transmitter and receiver modules along with the error calculation unit. The BPSK modulation and demodulation are designed using a digital frequency synthesizer (DFS). The DFS is used to generate the in-phase (I) and quadrature-phase (Q) signals and also provides better system performance than the conventional voltage-controlled oscillator (VCO) and look up table (LUT) based memory methods. The differential encoding-decoding mechanism is incorporated to recover the bits effectively and to reduce the hardware complexity. The simulation results are illustrated and used to find the error bits. The design utilizes less chip area, works at 268.2 MHz, and consumes 108 mW of total power. The IEEE 802.15.4 transceiver provides a latency of 3.5 clock cycles and works with a throughput of 76.62 Mbps. The bit error rate (BER) of 2×10-5 is achieved by the proposed digital transceiver and is suitable for real-time applications. The work is compared with existing similar approaches with better improvement in performance parameters.</span>
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Alhosban, Ahmad. "Binary Offset Carrier (BOC) and Binary Phase Shift Keying (BPSK) Modulation in Indoor Drones GNSS Recievers using Multipath Error Envelope MEE Technique." International Journal of Membrane Science and Technology 10, no. 3 (2023): 460–75. http://dx.doi.org/10.15379/ijmst.v10i3.1554.
Full textAbstract:
The applications of unmanned aerial vehicles (UAVs) have greatly eased the lives of human being. Due to the mass commerial production of UAVs (or Drones) and the support of the ongoing scientific research, it can now be used in disaster monitoring, surviellance, fire conrolling and many outdoor usages. However, the indoor applications have stricter requirements for the autonomous positioning capability of UAVs, requiring its positioning accuracy to be within the narrower areas and aisles. The Global Navigation Satellite System (GNSS) is currently the only guidance and autorecovery method that can be applied directly and consistently to UAV positioning. The current GPS L1C and/or Galileo E1 open services signals are being widely used for this purpose. Moreover, the Binary Offset Carrier (BOC) techniques have been recently adopted in Galileo and GPS BIII as one of the efficient mitigation methods to decrease the interference/multipath delays and to increase both the Position Accuracy and the immunity of GNSS interferences. This research aims to present a software method of assessing the improvements of the Accuracy, and yet the Availability, by producing the MEE for BOC technique. The used methodology is analyzing the theoretical equations behind the interfernece multipath error envelopes in both BPSK and the new BOC signals. The Results show a higher performance of BOC GNSS Recievers over BPSK ones, and less delay.