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Journal articles on the topic 'Digital wireless communication channel'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Ren, Jin. "Performance of HD Radio System." Applied Mechanics and Materials 678 (October 2014): 477–81. http://dx.doi.org/10.4028/www.scientific.net/amm.678.477.

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The advance of wireless communications brings in various schemes of wireless digital communication technology. Analog communication and broadcasting services convert into digital services in many countries. The IBOC (In-Band On-Channel) system has been developed to work in the same band with the conventional analog radio and broadcasting digital signal simultaneously. HDR (HD-Radio) standard of IBOC (In-Band-On-Channel) can use coherent demodulation using pilot sub-carriers. In this paper, the performance of HD radio system is evaluated. To contribute to decision of digital radio standard and

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2

Ren, Jin, and Ting Zhang. "Performance Evaluation of HD Radio System in Radio Environments." Open Electrical & Electronic Engineering Journal 9, no. 1 (2015): 247–52. http://dx.doi.org/10.2174/1874129001509010247.

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The advance of wireless communications brings in various schemes of wireless digital communication technology. Analog communication and broadcasting services convert into digital services in many countries. The IBOC (In- Band On-Channel) system has been developed to work in the same band with the conventional analog radio and broadcasting digital signal simultaneously. HDR (HD-Radio) standard of IBOC can use coherent demodulation using pilot subcarriers. In this paper, the performance of HD radio system is evaluated. To contribute to decision of digital radio standard and design of digital rad

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Sarma, Dikshita, Manash Pratim Sarma, Kandarpa Kumar Sarma, and Nikos E. Mastorakis. "Implementation of Galois Field for Application in Wireless Communication Channels." MATEC Web of Conferences 210 (2018): 03012. http://dx.doi.org/10.1051/matecconf/201821003012.

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This paper discusses the implementation of Galois Field based codes for application in wireless communication channel. It discusses the use of Galois Fields outlining the basic performance of a digital communication system in terms of BER curves. The work further discusses the performance of these codes in Gaussian and Rayleigh Fading Channels.

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Ahmed, Md Firoz, Md Tahidul Islam, and Abu Zafor Md. Touhidul Islam. "Performance of Convolution and CRC Channel Encoded V-Blast 4x4 MIMO MC-CDMA Wireless Communication System." International Journal of Ambient Systems and Applications 9, no. 2 (2021): 1–6. http://dx.doi.org/10.5121/ijasa.2021.9201.

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Wireless communications are among the rapidly growing fields in our current life and have a massive effect on every aspect of our everyday life. In this paper, the performance of the various digital modulation techniques (BPSK, DPSK, QPSK, and QAM) based wireless communication system on the audio signal transmission through the additive Gaussian Noise (AWGN) channel is assessed on the basis of bit error rate (BER) as a function of the signal-to-noise ratio (SNR). Based on the results of this study, BPSK modulation outperforms the DPSK, QPSK, and QAM modulation strategies in the MIMO MC-CDMA VB

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Prabakaran, M. P., A. Sivasubramanian, and K. Chitra. "Performance Analysis of QAM with MEMS Based SCIR for Indoor Optical Wireless Communication." Applied Mechanics and Materials 592-594 (July 2014): 2189–92. http://dx.doi.org/10.4028/www.scientific.net/amm.592-594.2189.

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This paper presents the systematic evaluation of performance of indoor optical wireless communication using different modulation schemes and micro electro mechanical systems - single channel imaging receiver (MEMS-SCIR). For the future modern world, indoor optical wireless communications (OWC) play a vital role. The main objective is to compare the performance of various modulation schemes in terms of their bit error probability. On -off keying (OOK) and pulse position modulation (PPM) are widely used in optical wireless communication for its simplicity. Here different digital modulation schem

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Yang, Tao, and Leon O. Chua. "Error Performance of Chaotic Digital Code-Divison Multiple Access (CDMA) Systems." International Journal of Bifurcation and Chaos 08, no. 10 (1998): 2047–59. http://dx.doi.org/10.1142/s0218127498001704.

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Chaotic digital code-division multiple access ((CD)2MA) systems are new types of communication systems using chaotic carriers. (CD)2MA had found applications in both wireless and other communication systems. In this paper we study the error performance of chaotic digical code-division multiple access ((CD)2MA) systems used in both wireless environment and cable networks. We present first the details of the interleave mode of the (CD)2MA. When a (CD)2MA system works in the interleave mode, each of its transmitters only transmits signals during a portion of the bit duration of the message signal

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Chouksey, Sagar, Mayur Ghadle, Abdul Rasheed, and Shaikh Khursheed Mohd Murtaza. "PERFORMANCE AND ANALYSIS OF REED-SOLOMAN CODES FOR EFFICIENT COMMUNICATION SYSTE." INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY 10, no. 1 (2013): 1249–54. http://dx.doi.org/10.24297/ijct.v10i1.3327.

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In wireless communication systems reducing bit/frame/symbol error rate is critical. If bit error rates are high then in wireless communication system our aim is to minimize error by employing various coding methods on the data transferred. Various channel coding for error detection and correction helps the communication system designers to reduce the effects of a noisy data transmission channel. In this paper our focus is to study and analysis of the performance of Reed-Solomon code that is used to encode the data stream in digital communication. The performances were evaluated by applying to

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Salam, Abdul. "Subsurface MIMO: A Beamforming Design in Internet of Underground Things for Digital Agriculture Applications." Journal of Sensor and Actuator Networks 8, no. 3 (2019): 41. http://dx.doi.org/10.3390/jsan8030041.

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In underground (UG) multiple-input and multiple-output (MIMO), transmit beamforming is used to focus energy in the desired direction. There are three different paths in the underground soil medium through which the waves propagate to reach the receiver. When the UG receiver receives a desired data stream only from the desired path, then the UG MIMO channel becomes a three-path (lateral, direct, and reflected) interference channel. Accordingly, the capacity region of the UG MIMO three-path interference channel, and the degrees of freedom (multiplexing gain of this MIMO channel) requires careful

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Yatnalli, V., B. G. Shivaleelavathi, and K. L. Sudha. "Review of Inpainting Algorithms for Wireless Communication Application." Engineering, Technology & Applied Science Research 10, no. 3 (2020): 5790–95. http://dx.doi.org/10.48084/etasr.3547.

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Digital image inpainting is a technique of restoring large removed /damaged regions of an image with the data from the surrounding pixels of the removed region. The issue of image restoration with inpainting techniques occurs commonly in computer vision/image processing when unwanted objects have to be removed from images, for filling cracks in photographs, etc. Digital image inpainting approach is an active field of research in two significant applications of wireless communication: image compression and image recovery from a damaged image due to errors in a wireless channel. This work presen

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Saadaoui, Safa, Mohamed Tabaa, Fabrice Monteiro, Mouhamad Chehaitly, and Abbas Dandache. "Discrete Wavelet Packet Transform-Based Industrial Digital Wireless Communication Systems." Information 10, no. 3 (2019): 104. http://dx.doi.org/10.3390/info10030104.

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The industrial internet of things (IIoT) known as industry 4.0, is the use of internet of things technologies, via the Wireless Sensor Network (WSN), to enhance manufacturing and industrial processes. It incorporates machine learning and big data technologies, to allow machine-to-machine communication that have existed for years in the industrial world. Therefore, it is necessary to propose a robust and functional communication architecture that is based on WSNs, inside factories, in order to show the great interest in the connectivity of things in the industrial environment. In such environme

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Bossy, Bartosz, Pawel Kryszkiewicz, and Hanna Bogucka. "Flexible, Brain-Inspired Communication in Massive Wireless Networks." Sensors 20, no. 6 (2020): 1587. http://dx.doi.org/10.3390/s20061587.

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In this paper, a new perspective of using flexible, brain-inspired, analog and digital wireless transmission in massive future networks, is presented. Inspired by the nervous impulses transmission mechanisms in the human brain which is highly energy efficient, we consider flexible, wireless analog and digital transmission on very short distances approached from the energy efficiency point of view. The energy efficiency metric is compared for the available transmission modes, taking the circuit power consumption model into account. In order to compare the considered systems, we assume that the

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Chen, Shuo, Jun Lei Song, Zi Min Yuan, Yang Liu, and Pei Pei Guo. "Diver Communication System Based on Underwater Optical Communication." Applied Mechanics and Materials 621 (August 2014): 259–63. http://dx.doi.org/10.4028/www.scientific.net/amm.621.259.

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The underwater diver visible light communication system integrating information collection, transmission and processing achieves the optical communication device established for the diver’s underwater wireless transmission and underwater sensor network. The front-end signal acquisition module capable of carrying out voice and image acquisition utilizes a MEMS digital microphone and a high performance CMOS camera to change optical signals in to digital ones. The signal source applies wavelet conversion and the channel coding and decoding apply Turbo algorithms, channel modulation and demodulati

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Shi, Rui Jing, Xiao Chao Fan, Feng Ting Li, and Bo Wei. "Application of Power Communication System in Wind Power Plant." Advanced Materials Research 724-725 (August 2013): 655–58. http://dx.doi.org/10.4028/www.scientific.net/amr.724-725.655.

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The application of power communication system in the field of wind power mainly includes the overall system communication and local field communication. During the operation of wind farms, the total system requires that the electric power communication system should provide reliable rapid information channel, accuracy of transmission on a variety of digital business. This article will focus on the application of power communication system between the wind turbine and the booster station, which includes optical fiber communication, communication and leased public circuit, as well as the cable c

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Manhas, Pratima, and M. K. Soni. "Comparison of OFDM System in terms of BER using Different Transform and Channel Coding." Indonesian Journal of Electrical Engineering and Computer Science 1, no. 1 (2016): 153. http://dx.doi.org/10.11591/ijeecs.v1.i1.pp153-158.

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<p>Orthogonal frequency division multiplexing is a type of multicarrier modulation technique which is used in wireless communication. OFDM can be used in various wireless and wired application such Digital audio broadcasting, digital video broadcasting &amp; wireless LAN. The Performance of OFDM system depends on various parameters such as using different transform, different modulation and by putting various channel coding. In this paper OFDM system is modeled by using different transform (DWT/FFT), different modulation (BPSK, QPSK, QAM) and different channel coding (Linear / Cyclic

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Naqvi, Aqeel, and Sungjoon Lim. "Review of Recent Phased Arrays for Millimeter-Wave Wireless Communication." Sensors 18, no. 10 (2018): 3194. http://dx.doi.org/10.3390/s18103194.

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Owing to the rapid growth in wireless data traffic, millimeter-wave (mm-wave) communications have shown tremendous promise and are considered an attractive technique in fifth-generation (5G) wireless communication systems. However, to design robust communication systems, it is important to understand the channel dynamics with respect to space and time at these frequencies. Millimeter-wave signals are highly susceptible to blocking, and they have communication limitations owing to their poor signal attenuation compared with microwave signals. Therefore, by employing highly directional antennas,

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KENNEDY, MICHAEL PETER, GÉZA KOLUMBÁN, and GÁBOR KIS. "CHAOTIC MODULATION FOR ROBUST DIGITAL COMMUNICATIONS OVER MULTIPATH CHANNELS." International Journal of Bifurcation and Chaos 10, no. 04 (2000): 695–718. http://dx.doi.org/10.1142/s0218127400000499.

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This tutorial work identifies the characteristic properties of chaotic digital modulation schemes and shows how the unique features of chaotic basis functions can be exploited to competitive advantage in selected application domains. Two robust noncoherent chaotic digital modulation schemes (DCSK and FM-DCSK) are described in detail and the performance of FM-DCSK is examined critically for communication channels where systems using conventional coherent and narrow-band modulation schemes fail. Since the FM-DCSK signal is a wide-band signal and its demodulation is performed without synchronizat

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Marjanović, Zvezdan, Dejan N. Milić, and Goran T. Đorđević. "On Numerical Evaluation of Packet-Error Rate for Binary Phase-Modulated Signals Reception over Generalized-K Fading Channels." Facta Universitatis, Series: Mathematics and Informatics 33, no. 2 (2018): 203. http://dx.doi.org/10.22190/fumi1802203m.

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We present a numerical evaluation of packet error rate (PER) for digital binary phase modulations over wireless communication channels. The analysis is valid for a quasistatic fading communication channel, where multipath fading and shadowing appear simultaneously. The approach is based on numerical evaluation of signal-to-noise ratio threshold that is further used in PER computation. We analyze the threshold and PER dependence on signal power, multipath fading and shadowing severity, as well as packet length.

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Ahmed, Md Firoz, Md Sofiqul Islam, and Abu Zafor Md Touhidul Islam. "Comparative Performance Assessment of V-Blast Encoded 8×8 MIMO MC-CDMA Wireless System." International Journal on AdHoc Networking Systems 11, no. 2 (2021): 1–7. http://dx.doi.org/10.5121/ijans.2021.11201.

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The bit error rate performance of a V-Blast encoded 8x8 MIMO MC-CDMA wireless communication system for different signal detection (MMSE and ZF) and digital modulation (BPSK, QPSK, DPSK, and 4QAM) schemes for grayscale image transmission has been investigated in this paper. The proposed wireless system employ ½-rated Convolution and cyclic redundancy check (CRC) channel encoding over the AWGN channel and Walsh Hadamard code as an orthogonal spread code. The present Matlab based simulation study demonstrates that the V-Blast encoded 8×8 MIMO MC-CDMA wireless system with the employment of 1⁄2- ra

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Chen, Chien-Sheng, Chyuan-Der Lu, Ho-Nien Shou, and Le-Wei Lin. "Baseband Transceiver Design of a High Definition Radio FM System Using Joint Theoretical Analysis and FPGA Implementation." International Journal of Antennas and Propagation 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/580479.

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Advances in wireless communications have enabled various technologies for wireless digital communication. In the field of digital radio broadcasting, several specifications have been proposed, such as Eureka-147 and digital radio mondiale (DRM). These systems require a new spectrum assignment, which incurs heavy cost due to the depletion of the available spectrum. Therefore, the in-band on-channel (IBOC) system has been developed to work in the same band with the conventional analog radio and to provide digital broadcasting services. This paper discusses the function and algorithm of the high

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Enayet Ullah, Shaikh, Md Golam Rashed, and Most Farjana Sharmin. "Encrypted message transmission in a QO-STBC encoded MISO wireless Communication system under implementation of low complexity ML decoding algorithm." INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY 2, no. 2 (2012): 53–58. http://dx.doi.org/10.24297/ijct.v2i1.2617.

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In this paper, we made a comprehensive BER simulation study of a quasi- orthogonal space time block encoded (QO-STBC) multiple-input single output(MISO) system. The communication system under investigation has incorporated four digital modulations (QPSK, QAM, 16PSK and 16QAM) over an Additative White Gaussian Noise (AWGN) and Raleigh fading channels for three transmit and one receive antennas. In its FEC channel coding section, three schemes such as Cyclic, Reed-Solomon and Â½-rated convolutionally encoding have been used. Under implementation of merely low complexity ML decoding based channel

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Hamlili, Heyem, Samir Kameche та Abdelhafid Abdelmalek. "SαS noise suppression for OFDM wireless communication in rayleight channel". International Journal of Electrical and Computer Engineering (IJECE) 10, № 2 (2020): 2003. http://dx.doi.org/10.11591/ijece.v10i2.pp2003-2010.

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Orthogonal frequency division multiplexing (OFDM) is a form of multi-carrier transmission technique widely used in the modern wireless network to achieve high-speed data transmission with good spectral efficiency. However, in impulsive noise environement BER performances of these systems, originally designed for a Gaussian noise model, are much degraded. In this paper, a new symmetric-alpha-stable (SαS) noise suppression technique based conjointly on adaptive modulation, convolutional coding (AMC) and Recursive Least Square (RLS) filtering is presented. The proposed scheme is applied on OFDM s

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Cho, Koon-Shik, and Jun-Dong Cho. "Low Power Digital Multimedia Telecommunication Designs." VLSI Design 12, no. 3 (2001): 301–15. http://dx.doi.org/10.1155/2001/43078.

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The increasing prominence of wireless multimedia systems and the need to limit power capability in very-high density VLSI chips have led to rapid and innovative developments in low-power design. Power reduction has emerged as a significant design constraint in VLSI design. The need for wireless multimedia systems leads to much higher power consumption than traditional portable applications. This paper presents possible optimization technique to reduce the energy consumption for wireless multimedia communication systems. Four topics are presented in the wireless communication systems subsection

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Maammar, Nejwa El, Seddik Bri, and Jaouad Foshi. "Performances Concatenated LDPC based STBC-OFDM System and MRC Receivers." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 1 (2018): 622. http://dx.doi.org/10.11591/ijece.v8i1.pp622-630.

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This paper presents the bit error rate performance of the low density parity check (LDPC) with the concatenation of convolutional channel coding based orthogonal frequency-division-multiplexing (OFDM) using space time block coded (STBC). The OFDM wireless communication system incorporates 3/4-rated convolutional encoder under various digital modulations (BPSK, QPSK and QAM) over an additative white gaussian noise (AWGN) and fading (Raleigh and Rician) channels. At the receiving section of the simulated system, Maximum Ratio combining (MRC) channel equalization technique has been implemented to

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Hussain, Ghasan Ali, and Lukman Audah. "BCH codes in UFMC: A new contender candidate for 5G communication systems." Bulletin of Electrical Engineering and Informatics 10, no. 2 (2021): 904–10. http://dx.doi.org/10.11591/eei.v10i2.2080.

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Nowadays, fifth generation (5G) wireless network is considered one of the most important research topics in wireless industry and it will be substituting with fourth generation (4G) in several aspects. Although the robustness of orthogonal frequency division multiplexing (OFDM) system against channel delays which is the reason behind using it in LTE/LTE Advanced however, it is suffering from high peak to average power ration (PAPR) and out of band side lobes. So, universal filtered multi-carrier (UFMC) technique is considered a new modulation scheme for 5G wireless communication system to over

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Manhas, Pratima, and M. K. Soni. "Optimized OFDM Model Using CMA Channel Equalization for BER Evaluation." Bulletin of Electrical Engineering and Informatics 6, no. 2 (2017): 133–39. http://dx.doi.org/10.11591/eei.v6i2.614.

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Orthogonal Frequency Division Multiplexing (OFDM) is a type of Multicarrier Modulation (MCM) technique in which entire bandwidth is divided into large number of small sub-carriers and each subcarrier is transmitted parallel to achieve higher data rates. It has various applications like Digital Audio Broadcasting (DAB), Digital Video Broadcasting (DVB) and wireless LAN.OFDM technique is widely used in wireless communication system because of its very high data rate. The performance of FFT based OFDM system using Linear and cyclic channel coding and Constant Modulus Algorithm (CMA) equalizer is

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Manhas, Pratima, and M. K. Soni. "Performance of OFDM System under Different Fading Channels and Channel Coding." Bulletin of Electrical Engineering and Informatics 6, no. 1 (2017): 54–61. http://dx.doi.org/10.11591/eei.v6i1.591.

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Orthogonal frequency division multiplexing (OFDM) is a type of multicarrier modulation (MCM) technique in which larger bandwidth is divided into parallel narrow bands each of which is modulated by different subcarriers. All the subcarriers are orthogonal to each other and hence it reduces the interference among various subcarriers. OFDM technique is an efficient modulation technique used in certain wired and wireless application.In a wireless communication channel, the transmitted signal can travel from transmitter to receiver over multiple reflective paths. This results to multipath fading wh

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Xu, Zhi-Jiang, Fang-Ni Chen, Yuan Wu, and Yi Gong. "A Secure Transmission Scheme Based on Artificial Fading for Wireless CrowdSensing Networks." Sensors 18, no. 10 (2018): 3500. http://dx.doi.org/10.3390/s18103500.

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For secure transmission of low cost single antenna communication nodes in wireless crowdsensing networks under static channel, a physical layer communication scheme is proposed, where each digital modulated symbol is encrypted by a random key at the transmitter and decrypted with the same key at the receiver. The legal users exploit the synchronized chaotic sequence and the two-stage block interleaver to generate a complex random variable (random key), whereby its envelope obeys the Rayleigh distribution and its phase obeys the uniformly distribution. The modulated symbol is multiplied by the

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Yan, Shengli. "Research on 5G-Oriented Wireless Sensor Array of Millimeter Hybrid Beam Sensing Terminal." Journal of Sensors 2021 (September 18, 2021): 1–10. http://dx.doi.org/10.1155/2021/2716475.

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With the rapid development of information technology, facing the problems and new challenges brought by mobile Internet and Internet of things technology, as one of the key technologies of 5G, millimeter-wave mobile communication (28/38/60/70 GHz) which can realize gigabit (GB/s, or even higher) data transmission rate has also attracted extensive attention of wireless researchers all over the world, it has quickly become a research hotspot in the field of wireless communication. In the millimeter-wave massive MIMO downlink wireless sensor system, a block diagonal beamforming algorithm based on

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Al-Moliki, Yahya Mohammed Hameed, Kamarul Ariffin Bin Noordin, MHD Nour Hindia, and Mohd Fadzli Bin Mohd Salleh. "Concatenated RS-Convolutional Codes for Cooperative Wireless Communication." Open Electrical & Electronic Engineering Journal 7, no. 1 (2013): 9–20. http://dx.doi.org/10.2174/1874129001307010009.

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In the last few years, several works have investigated the performance of cooperative wireless systems with various types of channel codes such as Low Density Parity Check (LDPC), Turbo, CRC, convolutional and recently Reed Solomon (RS) codes. These cooperative schemes give power to single antenna mobiles to originate virtual multiple antennas transmitter, MIMO system, by sharing their antennas so that diversity gain is achieved. The most common cooperative schemes are decode and forward (DF) and coded cooperation (CC). Concatenated Reed Solomon and convolutional codes have been used by severa

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Sambul, Alwin M., Sherwin R. U. A. Sompie, Daniel Febrian Sengkey, Agustinus Jacobus, and Alicia A. E. Sinsuw. "Ship-to-Shore Wireless Communication for Asynchronous Data Delivery to the Remote Islands." Journal of Sustainable Engineering: Proceedings Series 1, no. 1 (2019): 103–7. http://dx.doi.org/10.35793/joseps.v1i1.13.

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Nowadays, many people who live in remote islands of Indonesia are still facing difficulties in terms of access to information. In the locations where end-to-end communication is not available, the asynchronous approach can be utilized to send information in the form of digital data. In some areas, we could utilize passenger ships or ferries as physical carriers to deliver digital data to the people in the remote islands which are located at a particular range of distance from the ship’s passing routes. This paper reports the channel performance of long-range WiFi connection oversea at 5 GHz us

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Guan, Lei, Ray Kearney, Chao Yu, and Anding Zhu. "High-performance digital predistortion test platform development for wideband RF power amplifiers." International Journal of Microwave and Wireless Technologies 5, no. 2 (2013): 149–62. http://dx.doi.org/10.1017/s1759078713000184.

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In this paper, a complete design procedure, together with robust system validation approaches, is presented for implementing a high-performance re-configurable digital predistortion (DPD) test platform for compensating for nonlinear distortion and memory effects induced by radio frequency (RF) power amplifiers (PAs) in the transmitters of modern wireless communication systems. This hardware and software co-operated test system not only enables effective validation for DPD algorithm development, but also provides a high-performance and reliable hardware-based linearization test platform. The ex

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Et.al, G. Aparna. "A Watermark Approach for Image Transmission: Implementation of Channel Coding Technique with Security." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 3 (2021): 3976–84. http://dx.doi.org/10.17762/turcomat.v12i3.1687.

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In this paper an approach for secured digital image transmission with watermark is being proposed. The tremendous growth in technology for various applications demand secured communications across the wireless channels. Secured image transmission is the one of the prominent process in digital communication applications. A watermark is embedded in to the image data that is to be protected from unauthorized users. The cryptographic algorithms chosen for secured transmission led to the need for hardware implementation. In the process of secured image transmission turbo encoder is proposed for err

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Nguyen, Minh Tuong, Viktor I. Nefedov, Igor V. Kozlovsky, Alexey V. Malafeev, Kirill A. Selenya, and Natalia A. Mirolyubova. "Analysis of the Raman spectrum of high-power amplifiers of wireless communication systems." Russian Technological Journal 7, no. 6 (2020): 96–105. http://dx.doi.org/10.32362/2500-316x-2019-7-6-96-105.

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At present, the transfer of information is an integral part of technologies that are actively developing in the framework of the process called the Fourth Industrial Revolution. In this, space-satellite, satellite and other mobile wireless communication systems play an increasingly important role. Almost all of them include multiple access, which means a method of common resource division of the communication channel between subscribers (each mobile station has the ability to use a satellite retransmitter or the base station of a mobile wireless communication system to transmit its signals reg

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Ma, Ruiping, Liudong Xing, and Yujie Wang. "Performance Analysis of Reed-Solomon Codes for Effective Use in Survivable Wireless Sensor Networks." International Journal of Mathematical, Engineering and Management Sciences 5, no. 1 (2019): 13–28. http://dx.doi.org/10.33889/ijmems.2020.5.1.002.

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In wireless sensor networks, data transmitted over wireless channels can get corrupted or lost due to channel noises and interferences. Error control coding is a technique that enables reliable delivery of digital data over unreliable communication channels. By adding redundancy to the transmitted data, error control codes allow the decoder to recover the original data based on partial data information received. The codes allow the receiver to recover errors or data loss without retransmission, thus making them suitable for applications where retransmissions are costly or impossible. Due to th

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Nour, Mohamed Abdalla. "An Empirical Study of the Effect of Internet Services on the Preferential Adoption of Mobile Internet." International Journal of E-Business Research 10, no. 1 (2014): 53–73. http://dx.doi.org/10.4018/ijebr.2014010104.

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The revolution in wireless and cellular communications has led to a remarkable growth in smart mobile cellular devices capable of Internet access and mobile web browsing. This study empirically examined the emerging role of the mobile Internet as an alternative access channel for a growing list of applications and services. Based on a survey of 220 undergraduate students in a major university in the Middle East, we developed and tested a model where the mobile advantage of e-communication, e-transactions, e-entertainment, and e-learning were posited to influence the choice of Internet access c

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Vasilyev, Gleb Sergeevich, Oleg R. Kuzichkin, and Dmitry I. Surzhik. "Performance analysis of MIMO communication system with NLOS UV channel." Photonics Letters of Poland 12, no. 4 (2020): 91. http://dx.doi.org/10.4302/plp.v12i4.985.

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Performance analysis is carried out, of a multiple input, multiple output (MIMO) ultraviolet (UV) communication system with a non-line-of-sight (NLOS) UV channel. The achievable bit error coefficient is calculated using three spatial multiplexing methods for different bitrate values, azimuthal deviation between the directional diagrams of an optical transmitter and an optical receiver, and different noise levels. Full Text: PDF ReferencesZ. Xu, B. Sadler, "Ultraviolet communications: potential and state-of-the-art", IEEE Commun. Mag. 4667-73 (2009). CrossRef D. Han, Y. Liu, K. Zhang et al., "T

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Qasim, Aseel Abdul-Karim, Adheed Hassan Sallomi, and ِAli Khalid Jassim. "Rabid Euclidean direction search algorithm for various adaptive array geometries." Bulletin of Electrical Engineering and Informatics 10, no. 2 (2021): 856–69. http://dx.doi.org/10.11591/eei.v10i2.1899.

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One of the exciting technologies used to meet the increasing demand for wireless communication services is a smart antenna. A smart antenna is basically confirmed by an array of antennas and a digital beamformer unit through which cellular base station can direct the beam toward the desired user and set nulls toward interfering users. In this paper, different array configurations (linear, circular, and planer) with the REDS algorithm are implemented in the digital beam-forming unit. The wireless system performance is investigated to check the smart antenna potentials assuming Rayleigh fading c

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Muramatsu, Fumiya, Kentaro Nishimori, Ryotaro Taniguchi, Takefumi Hiraguri, and Tsutomu Mitsui. "Evaluation of Multi-Beam Massive MIMO Considering MAC Layer Using IEEE802.11ac and FDD-LTE." Electronics 8, no. 2 (2019): 225. http://dx.doi.org/10.3390/electronics8020225.

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Massive multiple-input multiple-output (MIMO) transmission has attracted attention as a key technology for use in fifth-generation mobile communication systems. Multi-beam massive MIMO systems that apply beam selection in analog components and blind algorithms in digital components to eliminate the requirement for channel state information have been proposed as a method for reducing overhead. In this study, we developed an adaptive modulation scheme for implementing multi-beam massive MIMO and used computer simulation to compare it with digital and analog–digital hybrid beam-forming methods. T

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Manhas, Pratima, and M. K. Soni. "OFDM System Performance Evaluation under Different Fading Channels and Channel Coding using Matlab Simulink." Indonesian Journal of Electrical Engineering and Computer Science 5, no. 2 (2017): 260. http://dx.doi.org/10.11591/ijeecs.v5.i2.pp260-266.

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<p>Orthogonal Frequency Division Multiplexing (OFDM) is a form of Multicarrier Modulation (MCM) technique in which larger bandwidth is divided into parallel narrow bands each of which is modulated by different subcarriers. All the subcarriers are orthogonal to each other and hence it reduces the interference among various subcarriers. OFDM technique is an efficient modulation technique used in certain wired and wireless application. During transmission, the transmitted signal can travel from transmitter to receiver over multiple reflective paths in case of wireless communication system w

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Cheng, Qi, Chingfang Hsu, and Lein Harn. "Lightweight Noninteractive Membership Authentication and Group Key Establishment for WSNs." Mathematical Problems in Engineering 2020 (May 16, 2020): 1–9. http://dx.doi.org/10.1155/2020/1452546.

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Wireless sensor networks (WSNs) exhibit their potential capacity in the next generation of mobile communication networks and wireless systems (5G). Collected data in WSNs are different from most data transmitted in digital communication applications. Most collected data in WSNs contain only few bits of information. Conventional protocols are not suitable for WSNs since this environment needs more flexible and lightweight protocols for secure group communications. Hence, how to realize the mutual secure and lightweight communication is a big challenge for WSNs. User authentication and key estab

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Wang, Jun, and Shuo Feng. "Design of Infrared Communication System Based on Phase-Locked Loop Frequency Modulation." Applied Mechanics and Materials 624 (August 2014): 561–66. http://dx.doi.org/10.4028/www.scientific.net/amm.624.561.

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The paper introduces a system using PLL frequency modulation and demodulation technique, and using infrared as the carrier to realize wireless communication. CD4046 is a common CMOS low-frequency phase locked loopintegrated circuit, and it has the characteristics of high VCOlinearity, tunable center frequency and acquisition frequency range, low power consumption and simple for use. The paper introduces the design scheme using the technique for infrared communication, and proposes a method using sing-chip microcontroller to control single channel to realize the simultaneous transmission of aco

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El Ghzaoui, M., A. Hmamou, J. Foshi, and J. Mestoui. "Compensation of Non-linear Distortion Effects in MIMO-OFDM Systems Using Constant Envelope OFDM for 5G Applications." Journal of Circuits, Systems and Computers 29, no. 16 (2020): 2050257. http://dx.doi.org/10.1142/s0218126620502576.

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Orthogonal frequency division multiplexing (OFDM) is a multicarrier transmission system that can achieve high data rate over wireless channels. At the same time, multiple input multiple output OFDM (MIMO-OFDM) in wireless communication systems has been exposed to offer significant improvement over wireless technology by providing transmit diversity. It has become a promising technique for high-performance 5G broadband wireless communications. However, the main problem associated with MIMO-OFDM is that its signal exhibits high peak-to-average power ratio (PAPR), which causes nonlinear distortio

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Matam, Rakesh, and Somanath Tripathy. "Secure Multicast Routing Algorithm for Wireless Mesh Networks." Journal of Computer Networks and Communications 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/1563464.

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Multicast is an indispensable communication technique in wireless mesh network (WMN). Many applications in WMN including multicast TV, audio and video conferencing, and multiplayer social gaming use multicast transmission. On the other hand, security in multicast transmissions is crucial, without which the network services are significantly disrupted. Existing secure routing protocols that address different active attacks are still vulnerable due to subtle nature of flaws in protocol design. Moreover, existing secure routing protocols assume that adversarial nodes cannot share an out-of-band c

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Wasenmüller, U., C. Gimmler, and N. Wehn. "Low complexity Turbo synchronization without initial carrier synchronization." Advances in Radio Science 8 (October 1, 2010): 123–28. http://dx.doi.org/10.5194/ars-8-123-2010.

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Abstract. Wireless data transmission results in frequency and phase offsets of the signal in the receiver. In addition the received symbols are corrupted by noise. Therefore synchronization and channel coding are vital parts of each receiver in digital communication systems. By combining the phase and frequency synchronization with an advanced iterative channel decoder (inner loop) like turbo codes in an iterative way (outer loop), the communications performance can be increased. This principal is referred to as turbo synchronization. For turbo synchronization an initial estimate of phase and

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P., Karrupusamy. "MIMO BASED HIGH SPEED OPTICAL FIBER COMMUNICATION SYSTEM." December 2019 2019, no. 02 (2019): 107–16. http://dx.doi.org/10.36548/jei.2019.2.006.

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As the telecommunication services totally relies on the optical fiber for extending communications, it necessary that the optical communication system be capable of handling high speed, multiple channels and long haul signal transmission. recently the emergence of the optical coherent 100 GB/s and the digital signal processing has made possible the perfect signal transmission even for the MIMO (multiple input multiple output system) as they are well reformed to permit multiple wireless signal that holds different carrier frequencies. So the optical fiber system has become prominent among the a

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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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Haque, M. D., S. E. Ullah, M. M. Rahman, and M. Ahmed. "BER Performance Analysis of a Concatenated Low Density Parity Check Encoded OFDM System in AWGN and Fading Channels." Journal of Scientific Research 2, no. 1 (2009): 46–53. http://dx.doi.org/10.3329/jsr.v2i1.2724.

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In this paper, we investigate the bit error rate (BER) performance of a concatenated low density parity check (LDPC) encoded orthogonal frequency-division multiplexing (OFDM) system on color image transmission. In FEC concatenated channel coding, the OFDM wireless communication system incorporates 1/2-rated convolution encoder under various digital modulations (QPSK, 8PSK, QAM, 8QAM, 16QAM and 32QAM) over an additative white gaussian noise (AWGN) and other fading (Raleigh and Rician) channels. Computer simulation results on BER demonstrate that the LDPC encoded OFDM system outperforms with QAM

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Naima, SOFI, FATIMA Debbat, and Fethi Tarik Bendimerad. "Performance Improvement of MIMO-OSTBC System with BCH-TURBO Code In Rayleigh Fading Channel." Indonesian Journal of Electrical Engineering and Computer Science 11, no. 3 (2018): 898. http://dx.doi.org/10.11591/ijeecs.v11.i3.pp898-907.

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Recently, OSTBCs has become a widespread technique for signal transmission over wireless channels because of their diversity gain, but there are not designed to achieve an additional coding gain. Hence, OSTBCs must be concatenated with an external code which allows a significant coding gain.FEC (forward error correction) is a technique used for detecting and possibly correcting errors that can occur when messages are transmitted through a digital communication system, also for rendering the information more reliable. Thus, with staffing these coding techniques that are able to reach Shannon li

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Trane, Gianpiero, Rito Mijarez, and Jesús Arturo Pérez-Díaz. "Automatic Guided Waves Data Transmission System Using an Oil Industry Multiwire Cable." Sensors 20, no. 3 (2020): 868. http://dx.doi.org/10.3390/s20030868.

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Alternative wireless data communication systems are a necessity in industries that operate in harsh environments such as the oil and gas industry. Ultrasonic guided wave propagation through solid metallic structures, such as metal barriers, rods, and multiwire cables, have been proposed for data transmission purposes. In this context, multiwire cables have been explored as a communication media for the transmission of encoded ultrasonic guided waves. This work presents the proprietary hardware design and implementation of an automatic data transmission system based on the propagation of ultras

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EL-SANKARY, KAMAL, ALI ASSI, and MOHAMAD SAWAN. "NEW SAMPLING METHOD TO IMPROVE THE SFDR OF WIDE BANDWIDTH ADC DEDICATED TO NEXT GENERATION WIRELESS TRANSCEIVER." Journal of Circuits, Systems and Computers 13, no. 06 (2004): 1183–201. http://dx.doi.org/10.1142/s021812660400191x.

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Modern wireless communication standards that support high rates of voice and video streaming need high-speed Analog-to-Digital Converters (ADCs) with wide Spurious-Free Dynamic Range (SFDR). Conventional time-interleaved ADCs suffer from spurious components that seriously affect the SFDR. In this paper, we present the mathematical background describing the effect of randomizing the samples among the interleaved ADCs and we propose a digitally oriented method based on this analysis to randomize the mismatches among the ADC channels. Analyses and simulations show the effectiveness of the propose

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