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Journal articles on the topic 'High symbol rate transmissions'

Author: Grafiati

Published: 1 June 2024

Last updated: 31 July 2025

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1

Abboud, Maryam K., and Bayan M. Sabbar. "Performance evaluation of high mobility OFDM channel estimation techniques." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 3 (2020): 2562. http://dx.doi.org/10.11591/ijece.v10i3.pp2562-2568.

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In wireless communication, Orthogonal Frequency Division Multiplexing (OFDM) has been adopted due to its robustness to multipath fading and high data rate transmissions. At the other hand, the performance of OFDM systems severely degraded due to multi-path fading and Doppler frequency shifts in mobile systems, which causes inter-carrier-interference (ICI). Thus, Estimation of channel parameters is required at the receiver using a pre designed estimator where pilot tones are inserted in each OFDM symbol. In this paper, a random pilot data are generated and inserted in each OFDM symbol at equall

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Maryam, K. Abboud, and M. Sabbar Bayan. "Performance evaluation of high mobility OFDM channel estimation techniques." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 3 (2020): 2562–68. https://doi.org/10.11591/ijece.v10i3.pp2562-2568.

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In wireless communication, Orthogonal Frequency Division Multiplexing (OFDM) has been adopted due to its robustness to multipath fading and high data rate transmissions. At the other hand, the performance of OFDM systems severely degraded due to multi-path fading and Doppler frequency shifts in mobile systems, which causes inter-carrier-interference (ICI). Thus, Estimation of channel parameters is required at the receiver using a pre designed estimator where pilot tones are inserted in each OFDM symbol. In this paper, a random pilot data are generated and inserted in each OFDM symbol at equall

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3

Mahendra, Sharma, and Kumar Singh Santhosh. "Orthogonality Measurent of Ofdm Signal." Indonesian Journal of Electrical Engineering and Computer Science 9, no. 3 (2018): 595–98. https://doi.org/10.11591/ijeecs.v9.i3.pp595-598.

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In recent days, Orthogonal Frequency Division Multiplexing is the technique to transmit and receive the signal without any overlapping of the signal. OFDM is also a multiplexing technique as well as modulation technique. It is a multi-carrier transmission technique in which single high data stream is divided into a number of lower rate streams that are transmitted simultaneous over some narrow sub channel. In general, OFDM avoids Inter-Symbol Interference (ISI), Inter-Carrier Interference (ICI) and fault transmissions between source and destination node. To measure the performance of the syste

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Sharma, Mahendra, and Santhosh Kumar Singh. "Orthogonality Measurent of OFDM Signal." Indonesian Journal of Electrical Engineering and Computer Science 9, no. 3 (2018): 595. http://dx.doi.org/10.11591/ijeecs.v9.i3.pp595-598.

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<p>In recent days, Orthogonal Frequency Division Multiplexing is the technique to transmit and receive the signal without any overlapping of the signal. OFDM is also a multiplexing technique as well as modulation technique. It is a multi-carrier transmission technique in which single high data stream is divided into a number of lower rate streams that are transmitted simultaneous over some narrow sub channel. In general, OFDM avoids Inter-Symbol Interference (ISI), Inter-Carrier Interference (ICI) and fault transmissions between source and destination node. To measure the performance of

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Rajaram, Akashkumar, Rui Dinis, Dushnatha Nalin K. Jayakody, and Marko Beko. "Secure Information Transmission with Self Jamming SWIPT." Electronics 9, no. 4 (2020): 587. http://dx.doi.org/10.3390/electronics9040587.

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This article is focused on implementing simultaneous wireless information and power transmission as a physical layer security measure by using artificial noise. A series of high energy precoded symbols is simultaneously transmitted along with the information symbols over a Rayleigh frequency selective fading channel. The high energy precoded symbols act as an artificial noise for the eavesdroppers. The energy symbols are precoded on the basis of a legitimate user’s channel matrix to form a null space vector, which eliminates the interference of energy symbols at the information symbol receiver

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6

Raybon, Gregory, Andrew Adamiecki, Peter J. Winzer, et al. "High Symbol Rate Coherent Optical Transmission Systems: 80 and 107 Gbaud." Journal of Lightwave Technology 32, no. 4 (2014): 824–31. http://dx.doi.org/10.1109/jlt.2013.2286963.

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García-Pérez, A., J. A. Andrade-Lucio, O. G. Ibarra-Manzano, E. Alvarado-Méndez, M. Trejo-Duran, and H. Gutiérrez-Martín. "Efficient Modulation Formats for High Bit-Rate Fiber Transmission." Acta Universitaria 16, no. 2 (2006): 17–26. http://dx.doi.org/10.15174/au.2006.184.

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The topic of this report will deal with the study of advanced modulation formats for highspeed optical communication systems. Basically, the use of alternate polarization modulation (alP) is considered in order to reduce the inter-symbol interference (ISI) caused mainly by effects such as Chromatic Dispersion (CD), Polarization Mode Dispersion (PMD) and Nonlinear effects. The comparative analysis among the different formats is carried out by means of the obtaining of its different spectrums. A detailed analysis of these and their dependency to the modulation format that generates it is present

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Nagatani, M., H. Wakita, H. Nosaka, et al. "75 GBd InP‐HBT MUX‐DAC module for high‐symbol‐rate optical transmission." Electronics Letters 51, no. 9 (2015): 710–12. http://dx.doi.org/10.1049/el.2015.0686.

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Fan, Wei Wei, Bo Li, You Wen Zhang, and Da Jun Sun. "Research of FH-MFSK Underwater Acoustic Communication Based on Non-Binary LDPC Codes." Applied Mechanics and Materials 519-520 (February 2014): 945–52. http://dx.doi.org/10.4028/www.scientific.net/amm.519-520.945.

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Compared with binary-modulation, Multiple-modulation can obtain higher rate of transmission in the condition of same symbol-rate. If using binary channel codes with multiple-modulation, there exists an problem of information-loss of the probability from bit to symbol conversion. Underwater acoustic channel is an multipath, time-variation, high-noise and strong doppler-effect wireless channel, which leads to high error-rate caused by signal distortion. To solve the problems above, we adopt FH-MFSK modulation to overcome the inter-symbol interference by multipath. The PN sequence is used as a fr

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10

Huu Ai, Duong, Dai Tho Dang, Cong Dat Vuong, Van Loi Nguyen, and Khanh Ty Luong. "Average symbol error rate analysis of reconfigurable intelligent surfaces based free-space optical link over Weibull distribution channels." International Journal of Electrical and Computer Engineering (IJECE) 14, no. 1 (2024): 443. http://dx.doi.org/10.11591/ijece.v14i1.pp443-450.

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Optical wireless communication (OWC) enables wireless connectivity using ultraviolet bands, infrared or visible. With its advantages features as high bandwidth, low cost, and operation in an unregulated spectrum. Free-space optical (FSO) communication systems are near terrestrial as a communication link between transceivers, the link is line-of-sight and successfully transmitted optical signals. Nevertheless, the optical signals transmissions over the FSO channels bring challenges to the system. To overcome the challenges posed by the FSO channels, the most common technique is to use relay sta

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Ling, Peng, Maolin Li, and Weipeng Guan. "Channel-Attention-Enhanced LSTM Neural Network Decoder and Equalizer for RSE-Based Optical Camera Communications." Electronics 11, no. 8 (2022): 1272. http://dx.doi.org/10.3390/electronics11081272.

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In an RGB-LED-based optical camera communication system, it is an essential goal to have better performance in the data rate and BER. However, in a higher symbol rate, due to the conventional sampling algorithm, the deterioration of transmission performance brought by the inter-symbol interference and inter-channel interference is significant. Innovatively, in this paper, the sub-image obtained by a captured frame of received video is encoded by a channel-attention-Net-based encoder to generate a descriptor without existing sampling methods. Moreover, we propose an LSTM-based equalizer to deco

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Jiang, Dong Chu, Yu Shan Li, and Yong Zhe Qu. "Precise Driver-Side Equalization of Capacitive Coupling Connector." Applied Mechanics and Materials 380-384 (August 2013): 3396–99. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.3396.

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Capacitive coupling connector subjects to excessive inter-symbol interference with the increasing of signal transmission rate. To solve this problem, a driver-side equalization scheme is proposed, and the calculation method of precise equalization ratio for this scheme is also given. The equalization scheme is implemented through select appropriate equalization ratio to increase high frequency components of signal and reduce the low frequency components of signal at the driver-side at the drive-side. It can reduce the inter-symbol interference and improve pulse magnitude effectively. Simulatio

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13

Zhang, Junwen, and Jianjun Yu. "Generation and Transmission of High Symbol Rate Single Carrier Electronically Time-Division Multiplexing Signals." IEEE Photonics Journal 8, no. 2 (2016): 1–6. http://dx.doi.org/10.1109/jphot.2016.2530565.

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14

Padmavathil, T., Kusma Kumari Cheepurupalli, and R. Madhu. "Evaluation of FBMC Channel Estimation using multiple Auxiliary symbols for high throughput and low BER 5G and beyond communications." Infocommunications journal 16, no. 2 (2024): 25–32. http://dx.doi.org/10.36244/icj.2024.2.4.

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Filter Bank Multi-Carrier (FBMC) modulation has been recognized as a consistent contender and a possible successor for Orthogonal Frequency Division Multiplexing (OFDM) in 5G and beyond because of its outstanding spectral properties. The channel is assessed in FBMC using pilot-symbol aided channel estimation that provides robust estimates even for severe channel conditions. In the present work, neutraliz ing the imaginary interference at the pilot positions is focused while estimating the channel. To neutralize the imaginary in terference, multiple auxiliary symbols have been proposed to enhan

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Zacko Gbadoubissa, Jocelyn Edinio, Ado Adamou Abba Ari, Emanuel Radoi, and Abdelhak Mourad Gueroui. "M-Ary Direct Modulation Chirp Spread Spectrum for Spectrally Efficient Communications." Information 14, no. 6 (2023): 323. http://dx.doi.org/10.3390/info14060323.

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Spread spectrum techniques, such as the Chirp Spread Spectrum (CSS) used by LoRa technology, are important for machine-to-machine communication in the context of the Internet of Things. They offer high processing gain, reliable communication over long ranges, robustness to interference and noise in harsh environments, etc. However, these features are compromised by their poor spectral efficiency, resulting in a very low data transmission rate. This paper deals with a spectrally efficient variant of CSS. The system uses M-ary phase keying to modulate the data and exploits CSS’s properties to tr

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Ue, T., S. Sampei, N. Morinaga, and K. Hamaguchi. "Symbol rate and modulation level-controlled adaptive modulation/TDMA/TDD system for high-bit-rate wireless data transmission." IEEE Transactions on Vehicular Technology 47, no. 4 (1998): 1134–47. http://dx.doi.org/10.1109/25.728485.

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Deng, Xianzheng, Xin Bian, and Mingqi Li. "LDM-Ex-FDM: A Novel Multi-Service Transmission Scheme for the ATSC 3.0 System." Applied Sciences 11, no. 7 (2021): 3178. http://dx.doi.org/10.3390/app11073178.

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In order to improve system coverage performance, in this paper, a multi-service transmission scheme on the basis of the puncturing technique, namely layered division multiplexing extension frequency-division multiplexing (LDM-Ex-FDM), is proposed. The key idea of the proposed scheme is that the symbols punctured from the enhanced layer (EL) of fixed services will be independently transmitted on a certain number of subcarriers orthogonal to the LDM signal of the core layer (CL) and most of the EL. By doing so, the punctured symbols will be demodulated with a higher signal-to-noise ratio (SNR) o

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Bandari, Shravan Kumar, V. V. Mani, and A. Drosopoulos. "Performance analysis of GFDM in various fading channels." COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 35, no. 1 (2016): 225–44. http://dx.doi.org/10.1108/compel-06-2015-0215.

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Purpose – The purpose of this paper is to study the performance of generalized frequency division multiplexing (GFDM) in some frequency selective fading channels. The exact symbol error rate (SER) expressions in Hoyt (Nakagami-q) and Weibull-v fading channels are derived. A GFDM transceiver simulation test bed is provided to validate the obtained analytical expressions. Design/methodology/approach – Modern cellular system demands higher data rates, very low-latency transmissions and sensors with ultra low-power consumption. Current cellular systems of the fourth generation (4G) are not able to

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Ue, T., S. Sampei, and N. Morinaga. "Symbol rate and modulation level controlled adaptive modulation system with TDMA/TDD for high bit rate transmission in high delay spread environments." Electronics Letters 32, no. 4 (1996): 304. http://dx.doi.org/10.1049/el:19960223.

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Wang, Fei, Zhiqun Cheng, Hang Li, and Dan Zhu. "A Software and Hardware Cooperation Method for Full Nyquist Rate Transmission Symbol Synchronization at E-Band Wireless Communication." Sensors 22, no. 22 (2022): 8924. http://dx.doi.org/10.3390/s22228924.

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Compared with the conventional pulse-shaping transmission system, the full Nyquist rate transmission system with large bandwidth is sensitive to the sampling phase. It has only one sample available in one symbol period and is easily interfered by the channel, which does not allow the traditional symbol synchronization methods to be used directly. Another challenge is that the resource utilization for sampling data processing needs to be minimized due to the excessive consumption of the high data throughput in hardware resources. To solve these issues, we propose a symbol synchronization method

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Divya, Dhawan, and Gupta Neena. "Performance Analysis of Post Compensated Long Haul High Speed Coherent Optical OFDM System." International Journal of Electrical and Computer Engineering (IJECE) 7, no. 1 (2017): 160–68. https://doi.org/10.11591/ijece.v7i1.pp160-168.

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This paper addresses the performance analysis of OFDM transmission system based on coherent detection over high speed long haul optical links with high spectral efficiency modulation formats such as Quadrature Amplitude Modulation (QAM) as a mapping method prior to the OFDM multicarrier representation. Post compensation is used to compensate for phase noise effects. Coherent detection for signal transmitted at bit rate of 40 Gbps is successfully achieved up to distance of 3200km. Performance is analyzed in terms of Symbol Error Rate and Error Vector Magnitude by varying Optical Signal to Noise

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Qin, Dong, and Tianqing Zhou. "Symbol Error Probability Optimization of OFDM Bidirectional AF Relaying Systems." Journal of Advanced Computational Intelligence and Intelligent Informatics 27, no. 1 (2023): 96–100. http://dx.doi.org/10.20965/jaciii.2023.p0096.

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This paper considers that two transceivers exchange orthogonal frequency division multiplexing (OFDM) signals with the aid of multiple bidirectional amplify and forward (AF) relays. Unlike most researchers who care about sum rate maximization issues to improve transmission efficiency, we formulate a symbol error probability (SEP) minimization problem under total power constraint because high data rate may degrade SEP performance. A joint algorithm of power allocation and relay selection is proposed to study their impact on the SEP performance. The closed-form solution of power allocation is no

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Zhuo, Xinran, Jianxiong Pan, Huwei Wang, Xiangming Li, and Neng Ye. "Enhancing PAPR and Throughput for DFT-s-OFDM System Using FTN and IOTA Filtering." Sensors 22, no. 13 (2022): 4907. http://dx.doi.org/10.3390/s22134907.

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High frequency wireless communication aims to provide ultra high-speed transmissions for various application scenarios. The waveform design for high frequency communication is challenging due to the requirements for high spectrum efficiency, as well as good hardware compatibility. With high flexibility and low peak-to-average power ratio (PAPR), discrete Fourier transformation spreading-based orthogonal frequency division multiplexing (DFT-s-OFDM) can be a promising candidate waveform. To further enhance the spectral efficiency, we integrate faster-than-Nyquist (FTN) signaling in DFT-s-OFDM, a

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Lei, Zhang, Cong Feng Liu, Wei Jiang, Gui Zhou Xu, and Ning Dai. "Performance Analysis of OFDM Channel System." Advanced Materials Research 268-270 (July 2011): 1438–46. http://dx.doi.org/10.4028/www.scientific.net/amr.268-270.1438.

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OFDM is a promising digital communications technique for high data rate transmissions. In this paper, we have analyzed the performance of mobile OFDM systems in the presence of channel estimation error. A new channel estimation error model is presented. Based on the estimation error model, new and simple expressions for the average bit error probability of M-QAM OFDM systems are derived for zero-forcing, minimum mean square error and maximum likelihood receivers. A complex correlation coefficient is used to quantify the quality of the channel estimation scheme. We have shown that if the comple

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Dhawan, Divya, and Neena Gupta. "Performance Analysis of Post Compensated Long Haul High Speed Coherent Optical OFDM System." International Journal of Electrical and Computer Engineering (IJECE) 7, no. 1 (2017): 160. http://dx.doi.org/10.11591/ijece.v7i1.pp160-168.

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<p>This paper addresses the performance analysis of OFDM transmission system based on coherent detection over high speed long haul optical links with high spectral efficiency modulation formats such as Quadrature Amplitude Modulation (QAM) as a mapping method prior to the OFDM multicarrier representation. Post compensation is used to compensate for phase noise effects. Coherent detection for signal transmitted at bit rate of 40 Gbps is successfully achieved up to distance of 3200km. Performance is analyzed in terms of Symbol Error Rate and Error Vector Magnitude by varying Optical Signal

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Feng, Chengxu, Yasong Luo, Jianqiang Zhang, and Houpu Li. "An OFDM-Based Frequency Domain Equalization Algorithm for Underwater Acoustic Communication with a High Channel Utilization Rate." Journal of Marine Science and Engineering 11, no. 2 (2023): 415. http://dx.doi.org/10.3390/jmse11020415.

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The underwater acoustic communication technique for high-speed and highly reliable information transmission in the ocean has been one of the popular research focuses facing the fast-growing information technology sector and the accelerating development of ocean resources. In order to achieve a high information transmission rate with limited underwater acoustic channel bandwidth, researchers have paid much attention to the underwater acoustic communication technique based on orthogonal frequency division multiplexing (OFDM). A traditional OFDM-based frequency domain equalization algorithm relie

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Srinivasan, Muralikrishnan, Alireza Pourafzal, Stavros Giannakopoulos, Peter Andrekson, Christian Häger, and Henk Wymeersch. "Learning Gradient-Based Feed-Forward Equalizer for VCSELs." Photonics 11, no. 10 (2024): 943. http://dx.doi.org/10.3390/photonics11100943.

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Vertical cavity surface-emitting laser (VCSEL)-based optical interconnects (OI) are crucial for high-speed data transmission in data centers, supercomputers, and vehicles, yet their performance is challenged by harsh and fluctuating thermal conditions. This paper addresses these challenges by integrating an ordinary differential equation (ODE) solver within the VCSEL communication chain, leveraging the adjoint method to enable effective gradient-based optimization of pre-equalizer weights. We propose a machine learning (ML) approach to optimize feed-forward equalizer (FFE) weights for VCSEL tr

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Dou, Xinyu, Teng Ma, and Dequn Liang. "A Time-Delay Overlapping Modulation-Based Maritime High-Speed and High-Spectral-Efficiency Communication Technology." Journal of Marine Science and Engineering 13, no. 2 (2025): 345. https://doi.org/10.3390/jmse13020345.

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To simultaneously address dual demands on the spectral efficiency and the data transmission rate of maritime communications, in this paper, a novel maritime communication technology based on time-delay overlapping modulation (TDOM) is proposed. In TDOM, multiple carriers are delayed in turn and directly overlapped in the time domain to form the communication symbol. In this way, the strict orthogonality between carriers can be broken through, indicating that the frequency interval between carriers can be much narrower than ever. In other words, TDOM can achieve non-orthogonal communication and

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Wang, Chanfei, Jiai He, and Haiyan Chen. "Decision-Feedback Aided Multiple-Symbol Differential Detection in Two-Way Relay Transmission." Mathematical Problems in Engineering 2019 (July 18, 2019): 1–7. http://dx.doi.org/10.1155/2019/8595091.

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In this paper, noncoherent transmission algorithms are proposed in a two-way relay transmission (TWRT), where differential space-time block codes based multiple-symbol differential detection (MSDD) is performed. Specifically, generalized likelihood ratio test aided MSDD (GLRT-MSDD) is developed with the exhaustive search in the TWRT. In order to solve the challenging problem of high complexity, the GLRT-MSDD model is reformulated and a decision-feedback aided MSDD (DF-MSDD) model is derived. Furthermore, performance analysis and the simulations confirm that the proposed DF-MSDD provides solid

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Nazarov, L. E. "//." Радиотехника и электроника 68, no. 9 (2023): 873–78. http://dx.doi.org/10.31857/s003384942309019x.

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A description of the algorithm for optimal symbol-by-symbol reception of signal structures based on block noise-resistant codes in non-binary Galois fields is given. It is shown that the basis of this algorithm is the fast spectral transformation algorithm in the Walsh–Hadamard basis with the dimension of the Galois field. It is shown that the resulting complexity of the analyzed character-by-character reception algorithm is determined by the dimension of the dual code, which determines the prospects of its application for block noise-resistant codes with a high code rate (with low redundancy)

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Mendelson, М., V. Egorov, and D. Kopylov. "AFM Signals Coding When Transmitting a Fractional Number of Bits per Symbol." Proceedings of Telecommunication Universities 9, no. 4 (2023): 34–43. http://dx.doi.org/10.31854/1813-324x-2023-9-4-34-43.

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The article proposes a simple method from the point of view of computational costs for encoding a fractional number of bits per symbol with amplitude-phase modulation (APM). The presentation is performed in relation to the case when it is necessary to form the value of the specific transmission rate with an accuracy of up to a quarter of a bit per symbol. Algorithms for the operation of the encoder and decoder, the formation of a synchro signal and the amount of energy gain achieved by using this method are given. The proposed coding method was used in the development and modernization of high

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Xia, Li Min, Xian Zhou, Dong Yan, Na Na Zhang, and Xiao Yun Wu. "Nearby Phase Search Algorithm with Reduced Complexity for Higher Order QAM Formats." Advanced Materials Research 760-762 (September 2013): 1869–73. http://dx.doi.org/10.4028/www.scientific.net/amr.760-762.1869.

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This paper proposes a nearby phase search (NPS) algorithm based on BPS estimation algorithm in optical coherent receivers. And its suitable for arbitrary multi-level modulation. Making use of the continuity of phase change, the proposed NPS algorithm is applied to process nearby symbols by taking the pre-estimation phase of each symbol block as reference point. Compared to the traditional blind phase search (BPS) algorithm and its improved two-stage BPS algorithm, the performance of the proposed NPS algorithm is greatly improved in ultra-high speed coherent optical transmission system. By the

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Alwan, Saib Thiab, Omar Abdulkareem Mahmood, and Tahreer Mahmood. "Generate high data rate of optical carries by using nanomaterial graphene in slab waveguide." Curved and Layered Structures 9, no. 1 (2022): 187–92. http://dx.doi.org/10.1515/cls-2022-0015.

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Abstract Single mode is one of the most practical applications in microwave propagations because of its high mode resolution and low transmission loss. In this paper, the single mode graphene material was implemented in slab waveguide to study the performance and optical properties of graphene material; the parameters that affect these models were found to be the cut-off frequency, attenuation wavenumbers, modes numbers, skin depth, angles incident, and propagation wave numbers. The effectiveness of these factors was simulated and analyzed using MATLAB software program. In this paper, the carr

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T, Jaya, M. Monisha, M. Meena, and C. Sharanya. "Improvement of bit error rate performance of MC-CDMA system by using adaptive digital modulation schemes." International Journal of Engineering & Technology 7, no. 3.3 (2018): 663. http://dx.doi.org/10.14419/ijet.v7i2.33.14863.

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In Wireless Communication, the transmission channel suffers due to multipath propagation and channel dispersion due to Inter Symbol Interference (ISI), thereby degrades the system performance greatly. Future communication requires high data rate and effective utilization of bandwidth. Hence, there is a need to improve the Bit Error Rate (BER). The proposed work is Adaptive Modulation (AM), combined with Multi Carrier Code Division Multiple Access (MC-CDMA) based transmission system. It is a promising way to increase the data rate and it uses bandwidth in a efficient manner. The Adaptive Modula

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Peng, Yaqiu, and Mingqi Li. "Discrete Fourier Transform-Based Block Faster-Than- Nyquist Transmission for 5G Wireless Communications." Applied Sciences 10, no. 4 (2020): 1313. http://dx.doi.org/10.3390/app10041313.

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Faster-than-Nyquist (FTN) signaling is regarded as a potential candidate for improving data rate and spectral efficiency of 5G new radio (NR). However, complex detectors have to be utilized to eliminate the inter symbol interference (ISI) introduced by time-domain packing and the inter carrier interference (ICI) introduced by frequency-domain packing. Thus, the exploration of low complexity transceiver schemes and detectors is of great importance. In this paper, we consider a discrete Fourier transform (DFT) block transmission for multi-carrier FTN signaling, i.e., DBT-MC-FTN. With the aid of

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Md., Juwel Sheikh. "VIDEO TRANSMISSION IN V-BLAST ENCODED MIMO MC-CDMA WIRELESS SYSTEM: PERFORMANCE STUDY." International Journal of Ambient Systems and applications(IJASA) 8, no. 1/2 (2023): 19. https://doi.org/10.5281/zenodo.8038555.

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With the fast development in wireless communication techniques along with mobile internet and multimedia services, the demand for high data rate transmission is increased significantly. The reliable transmission of data through wireless channels offer great challenge including fading, interference and multipath propagation [1,2]. As the demand for multi-user communication such as cellular systems is increasing, it is required to have multiple access capability to transmit multiple signals simultaneously through the channel. In recent years, a new transmission technique called Multicarrier - Co

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Wen, Guo Guan, Qing Ming Yi, and Min Shi. "Application of Programmable Pre-Emphasis in LVDS Driver." Applied Mechanics and Materials 380-384 (August 2013): 3043–46. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.3043.

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As demand for data rate continues to increase, new problem of LVDS start to come out, such as signal integrity. Those problems are primarily caused by frequency-dependent loss in transmission line. The purpose of pre-emphasis is to apply intentional overdriving to the signal and get it back to the original signal with the proper weight, thereby compensating for the ISI from the nearby data symbol. In order to avoid over-emphasis we propose a programmable pre-emphasis adapting to different situation, and finish the prototype which can improve the transmission bandwidth more effectively, achievi

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Fu, Tao, Yanfeng Yu, and Cheng Liu. "SCWOMP Recovery Algorithm for 5G MIMO Communication Symbol Detection." Journal of Computer Networks and Communications 2023 (July 14, 2023): 1–10. http://dx.doi.org/10.1155/2023/1374601.

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In order to solve the problem of small capacity and high energy consumption in China’s 5G communication technology system, the research proposes that based on the segmented weakly orthogonal matching pursuit (SWOMP) algorithm, it is combined with the compressed sensing matching pursuit algorithm to form a segmented backtracking weak selection positive algorithm and Cross Match Tracking (SCWOMP) algorithm. First, the sparseness of MIMO system technology and its transmission structure is analyzed. Then, the new model is built after comparing with other algorithms, and the problem of overestimati

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Gao, Hui Juan, and Yan Liu. "New Dual-Mode FSE Suitable for High-Order QAM Signals." Advanced Materials Research 760-762 (September 2013): 478–82. http://dx.doi.org/10.4028/www.scientific.net/amr.760-762.478.

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In the digital transmission system, constant modulus algorithm (CMA) is a famous blind equalization to overcome the inter-symbol interference without the aid of training sequences. But for the non-constant modulus signals such as higher-order QAM signals, the CMA just achieve moderate steady-state mean square error (MSE). So a new dual-mode fractionally-spaced equalization (FSE) suitable for high-order QAM signals is proposed, which makes full use of the character which is that the high-order QAM signals have the different modulus. This algorithm uses the FSE based on CMA as the basal mode and

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Haque, Md Dulal, Md Milon Rana, and Tajkuruna Akter Tithy. "PAPR Reduction and Bit Error Rate Evaluation in OFDM System using Hybrid Techniques." International Journal on AdHoc Networking Systems 12, no. 3 (2022): 1–19. http://dx.doi.org/10.5121/ijans.2022.12301.

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Orthogonal frequency division multiplexing (OFDM) has become an important component of waveform generation in wideband transmission. it's a superior technology for the high-speed rate of wired and wireless communication systems. Currently, multiple-input multiple-output orthogonal frequency division multiplexing (MIMO OFDM) systems are crucial wireless communication systems like 4G and 5G networks & tactical communication. The OFDM has many advantages over other techniques like its high capacity and immunity against multipath fading channels. However, one amongst the foremost drawbacks of

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Liu, Yanyan, Weigang Chen, Anguo Wang, and Changcai Han. "Combination of High-Order Modulation and Non-Binary LDPC Codes over GF(7) for Non-Linear Satellite Channels." Electronics 8, no. 12 (2019): 1396. http://dx.doi.org/10.3390/electronics8121396.

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High-order modulations are necessary to improve the bandwidth efficiency of the satellite communication system. However, the non-linear characteristic of satellite channels limits the application of high-order modulations. In this paper, we propose a new 7-point constellation which is expected to be effectively applied to the satellite communication system, and combine it with non-binary low-density parity-check (NB-LDPC) codes over Galois field GF(7) to guarantee the reliability of the data transmission. The exact expression for the average symbol error probability (SEP) of 7-order quadrature

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Hu, Chunyuan, Yujie Lin, Jianguo Li, Xiangyuan Bu, and Jianping An. "Near-Nyquist-Limit Optical Communication and Ranging Method Based on Waveform Matched PPM." Electronics 11, no. 4 (2022): 565. http://dx.doi.org/10.3390/electronics11040565.

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Deep-space optical communication and ranging technologies have attracted much attention for satellite-to-earth and moon-to-earth exploration. In integrated communication and ranging scenarios, non-integer oversampling factors are employed to improve the ranging performance, which can cause accumulated timing errors. We propose a novel pulse position modulation (PPM) symbol decision method based on waveform matching to reduce the impact of accumulated timing errors near the Nyquist sampling limit. Simulation results demonstrate that the ranging accuracy can reach 2.6 and 0.52 mm at sampling rat

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L, Sruthy, L. Bharathi, and P. Malini. "Selective Spanning With Fast Enumeration Algorithm for MIMO." International Journal of Emerging Research in Management and Technology 6, no. 10 (2017): 79. http://dx.doi.org/10.23956/ijermt.v6i10.70.

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Multiple input multiple output system have been emerged technology to increase channel capacity and a technical breakthrough for high data rate wireless transmission. The main objective of MIMO system is to obtain low Symbol Error Rate (SER) and acceptable computational complexity. The MIMO system cannot be implemented due to complexity problem. The complexity of MIMO system can be reduced by using different detector algorithms. In this paper, the performance of MIMO system over AWGN (Additive White Gaussian Noise) with ZF, MMSE, SD, K best algorithm and SSFE are analyzed using different anten

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Uddin, Jia, Mohammed Faisal, Md Facihul Azam, and A. F. M. Muzahidur Rahman. "Performance Analysis of Multicarrier Code Division Multiple Access over Rayleigh Fading Channel." Advanced Materials Research 457-458 (January 2012): 985–88. http://dx.doi.org/10.4028/www.scientific.net/amr.457-458.985.

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Recently, multi-carrier transmission schemes have been introduced into Code Division Multiple Access (CDMA) systems to gain advantages for high data rate transmission as well as security. Due to pseudorandom code there is no chance to Inter Symbol Interference (ISI). There are different techniques to mitigate multipath fading. One of the method is to transmit identical narrowband direct-sequence (DS) waveforms in parallel over a number of sub-channels using frequency diversity. Implementation this multi-carrier modulation technique in CDMA system is known as multi-carrier CDMA (MC-CDMA). In Ra

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DANG, LE KHOA, HUU PHUONG NGUYEN, LE NGUYEN BINH, and DUC NHAN NGUYEN. "SIMULINK MODEL AND FPGA-BASED OFDM COMMUNICATION SYSTEM: A SIMULATION AND HARDWARE INTEGRATED PLATFORM." International Journal of Modeling, Simulation, and Scientific Computing 01, no. 03 (2010): 369–404. http://dx.doi.org/10.1142/s1793962310000250.

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Ultra-broadband networks are currently attracting significant interests in employing wireless access and optical fiber access to the home and to the building at symbol rate reaching Gb/s. OFDM is a multicarrier modulation technique and considered to offer significant reduction of the data symbol to be carried per carrier channel, especially in ultra-high speed optical communications with bit rate reaching 100 Gb/s or even higher. This paper thus presents a novel and generic OFDM system employing both MATLAB Simulink and FPGA-based development software platform for simulation as well as hardwar

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Liu, Haike, Yang You, Lifeng Shi, and Huajiian Zhang. "Multi-domain united link adaptation technique in high-throughput satellite communication system." Journal of Physics: Conference Series 2469, no. 1 (2023): 012027. http://dx.doi.org/10.1088/1742-6596/2469/1/012027.

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Abstract Under the condition of using the same frequency resources, the communication capacity of high-throughput satellites is tens or even hundreds of times higher than that of traditional satellites. Compared with traditional satellites, high-throughput satellites have a large capacity, high speed, and anti-interference characteristics. However, the high-throughput satellite communication link using Ku/Ka-band is vulnerable to weather factors such as rain attenuation, so the system should have a control mechanism to achieve fade countermeasures. The existing methods include transmission pow

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Mishra, Manish Kumar, and Ritesh Kumar Mishra. "Performance Analysis of HSTC Network with Non-Static Terrestrial Nodes in a Fading Environment." Revue d'Intelligence Artificielle 36, no. 3 (2022): 363–71. http://dx.doi.org/10.18280/ria.360303.

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In this paper, Hybrid satellite-terrestrial systems (HSTC) are preferred in dynamic type environments with high mobility of nodes due to the performance enhancement features in multiple relay-based selective decode-and-forward (DF) approach. Because of the satellite link, aerial satellite to destination and satellite to relay links, are not the same due to time-selective shadowed Rician fading. Time-selective Rician fading depends on parameters like the angle of elevation of the satellite, the terrestrial relay node, and the node destination links, considered to be distinctively time-selective

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Asban, Mohammed Ali, Rahmat Talib, Mohammad Faiz Abdullah, and Mohammed S. M. Gismalla. "Effect of Line-of-sight Channels on DC-biased Optical Filter Bank Multicarrier Visible Light Communication with Multiple LED Arrays." International Journal of Computer Network and Information Security 16, no. 3 (2024): 16–25. http://dx.doi.org/10.5815/ijcnis.2024.03.02.

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This paper investigates the impact of propagation delay and channel loss due to the use of multiple LED arrays in visible light communication (VLC) systems based on filter bank multicarrier (FBMC) modulation. FBMC offers greater spectral efficiency, and asynchronous transmission and is a promising alternative scheme to orthogonal frequency division modulation (OFDM). The proposed FBMC model is based on 4-quadrature amplitude modulation (QAM) and 16-QAM formats and uses 100 symbols and 600 input bits per symbol. In this paper, the VLC-FBMC system is designed based on the line-of-sight (LOS) mod

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Fayadh, Rashid Ali, Mohd Fareq Abd Malek, Hilal Adnan Fadhil, and Norshafinash Saudin. "Performance Evaluation of Adaptive Indoor Matched Rake Receiver Using Multiple-Combining Techniques." Applied Mechanics and Materials 699 (November 2014): 921–30. http://dx.doi.org/10.4028/www.scientific.net/amm.699.921.

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This paper discusses the enhancement of the wireless rake receiver for high speed and short distance indoor ultra wideband (UWB) propagation with line-of sight (LOS) and non line-of sight (NLOS) channel models. The proposed matched rake receiver uses three main combining techniques, maximum ratio combining (MRC), equal gain combining (EGC), and selective combining (SC) to capture most of the energy of the multi-path components (MPCs). When the wireless communication systems work with high capacity and high speed in transmission and reception scenarios, there will be a serious challenge defined

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Al-Asady, Heba Abdul-Jaleel, Hassan Falah Fakhruldeen, and Mustafa Qahtan Alsudani. "Channel estimation of OFDM in C-band communication systems under different distribution conditions." Indonesian Journal of Electrical Engineering and Computer Science 23, no. 3 (2021): 1778–82. https://doi.org/10.11591/ijeecs.v23.i3.pp1778-1782.

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Orthogonal frequency division multiplexing (OFDM) is a transmission system that uses multiple orthogonal carriers that are sent out at the same time. OFDM is a technique for mobile and wireless communication that has high-efficient frequency utilization, high data-rate transmission, simple and efficient implementation using the fast Fourier transform (FFT) and the inverse fast Fourier transform (IFFT), and reduces inter symbol interference (ISI) by inserting cyclic prefix (CP). One of the most important approaches in an OFDM system is channel estimation. In this paper, the orthogonal frequency

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