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Journal articles on the topic 'Channel coding system'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Pratima, Manhasa, and K. Sonib M. "Performance of OFDM System under Different Fading Channels and Coding." Bulletin of Electrical Engineering and Informatics 6, no. 1 (2017): 54–61. https://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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2

Chen, You Gan, Xiao Mei Xu, and Lan Zhang. "Rate Compatible LDPC Codes Design for Shallow Water Acoustic Communications." Applied Mechanics and Materials 198-199 (September 2012): 1609–14. http://dx.doi.org/10.4028/www.scientific.net/amm.198-199.1609.

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The fast temporal variations shallow water acoustic (SWA) channels need the temporal variations channel coding scheme at the acceptable cost. Hence, flexible channel coding rate, adjusted according to different ocean channel characteristics, should be desired in the design of practical error control SWA communication system. In this paper, we propose rate-compatible LDPC (RC-LDPC) codes to improve the communication system reliability for SWA communications. The proposed SWA system adopting RC-LDPC codes consists of three important preprocessing: channel state information (CSI) estimator, signa

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3

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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4

Farhan, Ikhlas Mahmoud, Dhafer R. Zaghar, and Hadeel Nasrat Abdullah. "Enhancement of code division multiple access system performance using raptor codes." Indonesian Journal of Electrical Engineering and Computer Science 26, no. 3 (2022): 1460. http://dx.doi.org/10.11591/ijeecs.v26.i3.pp1460-1468.

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Some kinds of communication systems work in very low signal-to-noise (LSNR) environments. For these systems to function reliably, <span>specific techniques and methodologies have to be used to mitigate the degrading effects of the channel. The channel coding method is the key element in most LSNR communication systems, but emphasizing the code division multiple access (CDMA) is a new transmission technique in these channels. To enhance the CDMA scheme's system capacity and reach unprecedented ranges of LSNR values in wireless sensor network. This paper suggests combining CDMA with certai

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Farhan, Ikhlas Mahmoud, Dhafer R. Zagha, and Hadeel Nasrat Abdullah. "Enhancement of code division multiple access system performance using raptor codes." Indonesian Journal of Electrical Engineering and Computer Science 26, no. 3 (2022): 1460–68. https://doi.org/10.11591/ijeecs.v26.i3.pp1460-1468.

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Some kinds of communication systems work in very low signal-to-noise (LSNR) environments. For these systems to function reliably, specific techniques and methodologies have to be used to mitigate the degrading effects of the channel. The channel coding method is the key element in most LSNR communication systems, but emphasizing the code division multiple access (CDMA) is a new transmission technique in these channels. To enhance the CDMA scheme's system capacity and reach unprecedented ranges of LSNR values in wireless sensor network. This paper suggests combining CDMA with certain types

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6

Hwegi, Yousef, and Nasser Hassen. "High Speed Data Transmission Using Coding." Applied Mechanics and Materials 229-231 (November 2012): 1635–38. http://dx.doi.org/10.4028/www.scientific.net/amm.229-231.1635.

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The relible and fast data transmission over noisy band limitted channels is the basic requirment of digital communication and transmission system. Reliability considerations require that forward error correction techniques be used. This techniques find and correct limitted erros caused by a transport or storage systems. Such coding technique is therefore used to help compensate for signal degradation and provide increase in system capacity and reliability. In this paper, we analyze the performance of three codes which are the Reed Soloman Code, the convolutional code, and turbo code for the sa

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Almaamory, Aqiel N., and Husam Abduldaem Mohammed. "Performance Evaluation and Comparison Between LDPC and Turbo Coded MC-CDMA." Journal of Engineering 18, no. 04 (2023): 433–43. http://dx.doi.org/10.31026/j.eng.2012.04.05.

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This work presents a comparison between the Convolutional Encoding CE, Parallel Turbo code and Low density Parity Check (LDPC) coding schemes with a MultiUser Single Output MUSO Multi-Carrier Code Division Multiple Access (MC-CDMA) system over multipath fading channels. The decoding technique used in the simulation was iterative decoding since it gives maximum efficiency at higher iterations. Modulation schemes used is Quadrature Amplitude Modulation QAM. An 8 pilot carrier wereused to compensate channel effect with Least Square Estimation method. The channel model used is Long Term Evolution

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AbuZeid, Mohamed S., Yasmine A. Fahmy, and Magdy S. El-Soudani. "Adaptive Combined Channel-Network Coding for Cooperative Relay Aided Cognitive Radio Networks." Information 12, no. 8 (2021): 320. http://dx.doi.org/10.3390/info12080320.

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Cognitive radio (CR) is one of the emerging technologies for 4G/5G applications. Cooperative relay communications and network coding are some techniques that helped in enhancing the CR applications. This paper considers a primary broadcasting system for multimedia video streaming applications that broadcasts data to the primary users and to an aiding cooperative relay CR secondary system. The cooperative overlay secondary system can use many error control coding techniques for point-to-point data retransmissions such as channel coding, network coding, and combined coding techniques to enhance

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9

Francis, Xavier, Babu S. Hari, A. Rajesh, and Basha SK Jameer. "Low Code Coding Approach for ofdm Systems Coded with the Progressive Transmission." International Journal of Innovative Technology and Exploring Engineering (IJITEE) 9, no. 12 (2020): 185–88. https://doi.org/10.35940/ijitee.L7962.1091220.

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Orthogonal Frequency Division Multiplexing (OFDM) offers several benefits such as flexible wrapping, mail sign interference, reduced complexity and more. The only way to match parallel channels is to have genetic diversity in multipath channels. Various coded of OFDM systems reported using some form of channel coding or pre-coding to improve system performance. The execution of irrational orthogonal frequency division multiplexing (OFDM) on blurred channels is usually better than introducing some coding. Various coding schemes for off-OFDM have been reported in the literature.

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10

Zhang, Yaoxuan. "Research on different channel coding methods for 5G communication." Applied and Computational Engineering 12, no. 1 (2023): 244–50. http://dx.doi.org/10.54254/2755-2721/12/20230359.

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The implementation of channel coding techniques has the potential to yield coding gains, augment the capacity of the communication system, and significantly enhance the performance of the communication system. The quest for a code possessing a channel capacity surpassing the Shannon limit has been a longstanding pursuit among researchers. The utilization of Polar codes, a coding technique proposed by E. Arikan in 2007, was initially implemented. Theoretical demonstrations have shown that the Shannon limit can be achieved for binary, discrete, memoryless channels through the utilization of a co

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11

Patil, Ameykumar Arunrao. "Robust Transmission using Efficient Adaptive Modulation and Coding in Modern OFDM Systems." International Journal for Research in Applied Science and Engineering Technology 11, no. 5 (2023): 3364–76. http://dx.doi.org/10.22214/ijraset.2023.52336.

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Abstract: OFDM (Orthogonal Frequency Division Multiplexing) as a special multi-carrier transmission technology has good resistance to narrow-band interference and frequency selective fading ability. Using adaptive modulation and coding in an OFDM systems in comparison with traditional fixed modulation techniques, it becomes possible to take full advantage of spectrum resources enhancing bandwidth efficiency and system capacity making it suitable for the high-speed and reliable mobile communication systems in the future. In AMC (Adaptive Modulation and Coding) technique, modulation method, codi

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12

Young Chun, Jae, Kee Soo Yeom, and Eon Gon. Kim. "Performance analysis of coded 8-pssk system with MRC diversity in fading channels." International Journal of Engineering & Technology 7, no. 3.3 (2018): 107. http://dx.doi.org/10.14419/ijet.v7i2.33.13864.

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Due to the increasing demand for low power communication in the field of remote control & monitoring, it is necessary to introduce a communication technique to meet the various QoS requirements even in an inferior radio channels. In order to ensure these QoS requirements, we propose a communication technique that applies the channel code, diversity scheme into power-efficient modulation. It makes the radio possible to dramatically improve BER by reducing the uncertainty due to fading channels. A core of proposed communication technique is to maximize the performance gain by adopting divers

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13

Kapiton, А. M., R. V. Baranenko, H. V. Sokol, and M. Yu Okhrymenko. "Adaptive Combined Channel Network Coding for Cognitive Radio Networks with Cooperative Relay." Èlektronnoe modelirovanie 46, no. 1 (2024): 78–89. http://dx.doi.org/10.15407/emodel.46.01.078.

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Cognitive radio is one of the new technologies for 4G/5G applications, so cooperative relay communication and network coding are considered as certain methods to help improve their re-spective applications. A primary broadcast system for multimedia video streaming applications that broad¬casts data to primary users and an auxiliary cooperative relay secondary cognitive ra-dio system are considered. The secondary cooperative overlay system can use multiple error control coding methods for point-to-point data retransmission, such as channel coding, network coding, and combi¬ned coding methods to

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14

Yao, Shengshi, Zixuan Xiao, and Kai Niu. "Rate–Distortion–Perception Optimized Neural Speech Transmission System for High-Fidelity Semantic Communications." Sensors 24, no. 10 (2024): 3169. http://dx.doi.org/10.3390/s24103169.

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We consider the problem of learned speech transmission. Existing methods have exploited joint source–channel coding (JSCC) to encode speech directly to transmitted symbols to improve the robustness over noisy channels. However, the fundamental limit of these methods is the failure of identification of content diversity across speech frames, leading to inefficient transmission. In this paper, we propose a novel neural speech transmission framework named NST. It can be optimized for superior rate–distortion–perception (RDP) performance toward the goal of high-fidelity semantic communication. Par

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15

Pyla, Srinu, K. Padma Raju, and N. Bala Subrahmanyam. "Performance Analysis of Adaptive Filter Channel Estimated MIMO OFDM Communication System." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 5 (2018): 3829. http://dx.doi.org/10.11591/ijece.v8i5.pp3829-3836.

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Advanced Communication Systems are wideband systems to support multiple applications such as audio, video and data so and so forth. These systems require high spectral efficiency and data rates. In addition, they should provide multipath fading and inter-symbol interference (ISI) free transmission. Multiple input multiple output orthogonal frequency division multiplexing (MIMO OFDM) meets these requirements Hence, MIMO-OFDM is the most preferable technique for long term evaluation advanced (LTE-A). The primary objective of this paper is to control bit error rate (BER) by proper channel coding,

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16

Pyla, Srinu, K. Padma Raju, and N. Bala Subrahmanyam. "Performance Analysis of Adaptive Filter Channel Estimated MIMO OFDM Communication System." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 5 (2018): 3829. http://dx.doi.org/10.11591/ijece.v8i5.pp3829-3838.

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Advanced Communication Systems are wideband systems to support multiple applications such as audio, video and data so and so forth. These systems require high spectral efficiency and data rates. In addition, they should provide multipath fading and inter-symbol interference (ISI) free transmission. Multiple input multiple output orthogonal frequency division multiplexing (MIMO OFDM) meets these requirements Hence, MIMO-OFDM is the most preferable technique for long term evaluation advanced (LTE-A). The primary objective of this paper is to control bit error rate (BER) by proper channel coding,

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17

Srinu, Pyla, Padma Raju K., and Bala Subrahmanyam N. "Performance analysis of adaptive filter channel estimated MIMO OFDM communication system." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 5 (2018): 3829–38. https://doi.org/10.11591/ijece.v8i5.pp3829-3838.

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Advanced Communication Systems are wideband systems to support multiple applications such as audio, video and data so and so forth. These systems require high spectral efficiency and data rates. In addition, they should provide multipath fading and inter-symbol interference (ISI) free transmission. Multiple input multiple output orthogonal frequency division multiplexing (MIMO OFDM) meets these requirements Hence, MIMO-OFDM is the most preferable technique for long term evaluation advanced (LTE-A). The primary objective of this paper is to control bit error rate (BER) by proper channel coding,

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18

Al-Askery, Ali Jaber, and Ali Mhidi Hammadi. "On the performance of coded copper wire systems for G-fast communications." Indonesian Journal of Electrical Engineering and Computer Science 14, no. 3 (2019): 1272. http://dx.doi.org/10.11591/ijeecs.v14.i3.pp1272-1280.

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<p>This paper aims to investigate the performance of different channel coding techniques over copper wire channels. First, Chen model is used to simulate the copper wire channel model, then the performance of LDPC coded system with DVB-S2 standard is compared to the performance of turbo coded, and convolutional coded systems over wired channels. In addition, the performance of the systems under consideration is further investigated in the presence of impulsive noise (IN) with IN cancellation technique. Matlab simulations are utilized to simulate these systems for different quadrature amp

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19

He, Hong, Tao Li, Tong Yang, and Lin He. "Research on UCD Precoding for MIMO System." Advanced Materials Research 459 (January 2012): 620–23. http://dx.doi.org/10.4028/www.scientific.net/amr.459.620.

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This article mainly describes a new technique of multiple-input multiple-output (MIMO) communication systems based on the recent communication demand. This technique, by pre-coding CSI (the channel state information) at the transmitter, is based on UCD (Uniform Channel Decomposition) algorithm for MIMO system. By Uniform Channel decomposition of channel matrix, the algorithm can decompose a MIMO downlink channel into multiple identical sub-channels. The power allocation applied to each sub channel in MIMO system is identical, and the MIMO channel’s capacity isn’t reduce when the SNR (Signal No

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20

Agarwal, Arun, and S. K. Patra. "Performance Analysis of OFDM Based DAB Systems Using Concatenated Coding Technique." Advanced Materials Research 403-408 (November 2011): 105–13. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.105.

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Radio broadcasting technology in this era of compact disc is expected to deliver high quality audio programmes in mobile environment. The Eureka-147 Digital Audio Broadcasting (DAB) system with coded OFDM technology accomplish this demand by making receivers highly robust against effects of multipath fading environment. In this paper, we have analyzed the performance of DAB system conforming to the parameters established by the ETSI (EN 300 401) using time and frequency interleaving, concatenated Bose-Chaudhuri-Hocquenghem coding and convolutional coding method in different transmission channe

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21

Lee, Eui-Hak, Jae-Jeong Kim, and Hyoung-Kyu Song. "Adaptive Channel Coding Based on Channel Condition in Cooperative Communication System." Wireless Personal Communications 88, no. 3 (2016): 701–10. http://dx.doi.org/10.1007/s11277-016-3194-z.

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22

Zhong, Changchun, Changhun Oh, and Liang Jiang. "Information transmission with continuous variable quantum erasure channels." Quantum 7 (March 6, 2023): 939. http://dx.doi.org/10.22331/q-2023-03-06-939.

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Quantum capacity, as the key figure of merit for a given quantum channel, upper bounds the channel&apos;s ability in transmitting quantum information. Identifying different types of channels, evaluating the corresponding quantum capacity, and finding the capacity-approaching coding scheme are the major tasks in quantum communication theory. Quantum channel in discrete variables has been discussed enormously based on various error models, while error model in the continuous variable channel has been less studied due to the infinite dimensional problem. In this paper, we investigate a genera

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23

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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Pratima, Manhas, and Soni M.K. "Optimized OFDM Model Using CMA Channel Equalization for BER Evaluation." Bulletin of Electrical Engineering and Informatics 6, no. 2 (2017): 133–39. https://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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25

Abdel Mohicin Kazem, Hussein. "High Performance PCC-DMT System Based on Hybrid Multi-Wavelet Functions." University of Thi-Qar Journal for Engineering Sciences 1, no. 2 (2010): 55–70. http://dx.doi.org/10.31663/utjes.v1i2.124.

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In this paper a scheme is proposed to improve the Bit Error Rate (BER) performance for Discrete Multi-Tone (DMT) system in wireless channel. The conventional DMT system is based on Fast Fourier Transform (FFT). The proposed system is based on Hybrid Multi-Wavelet Transform (HMWT). The HMWT is mixed between FFT and Multi-Wavelet Transform (MWT). The Inter-Carrier Interference (ICI) in DMT system due to Doppler spread is reduced by using Polynomial Cancellation Coding (PCC). Simulation results are done in three different types of channels: Additive White Gaussian Noise (AWGN) channel, flat fadin

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26

BOIKO, J., I. PYATIN, and A. ZAIETS. "MODELS OF NOISELESS CODING SYSTEMS IN TELECOMMUNICATIONS." Herald of Khmelnytskyi National University. Technical sciences 287, no. 4 (2020): 174–83. https://doi.org/10.31891/2307-5732-2020-287-4-174-183.

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The paper presents the results of the synthesis and analysis of a possible scenario for decoding low-density parity-check codes. The principles of decoding low-density parity-check codes based on the turbo approach are considered. The modern communication theory is based on a scientific task, the essence of which is based on the synthesis of a model of information transfer from an information source to a receiver based on its spatial or temporal dislocation. We will design the decoder based on the “turbo” approach on the basis that the modulation and code will be processed in the receiving dev

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27

Moon, Hak-Soo, Chang-Woo Lee, and Seong-Won Lee. "Efficient Distributed Video Coding System without Feedback Channel." Journal of Korean Institute of Communications and Information Sciences 37A, no. 12 (2012): 1043–53. http://dx.doi.org/10.7840/kics.2012.37a.12.1043.

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Ming-Seng Kao, Shou-Kuo Shao, and Hsin-Yuan Chen. "WDM coding system with single parity-check channel." Journal of Lightwave Technology 12, no. 10 (1994): 1827–34. http://dx.doi.org/10.1109/50.337496.

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Krauss, J. A. "Source coding, channel coding and modulation techniques used in the DigiCipher system." IEEE Transactions on Broadcasting 37, no. 4 (1991): 158–61. http://dx.doi.org/10.1109/11.106205.

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Reitmeier, G. A., C. Basile, and S. A. Keneman. "Source coding, channel coding and modulation techniques used in the ADTV system." IEEE Transactions on Broadcasting 37, no. 4 (1991): 166–69. http://dx.doi.org/10.1109/11.106207.

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31

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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32

Schreiber, Susanne, Christian K. Machens, Andreas V. M. Herz, and Simon B. Laughlin. "Energy-Efficient Coding with Discrete Stochastic Events." Neural Computation 14, no. 6 (2002): 1323–46. http://dx.doi.org/10.1162/089976602753712963.

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We investigate the energy efficiency of signaling mechanisms that transfer information by means of discrete stochastic events, such as the opening or closing of an ion channel. Using a simple model for the generation of graded electrical signals by sodium and potassium channels, we find optimum numbers of channels that maximize energy efficiency. The optima depend on several factors: the relative magnitudes of the signaling cost (current flow through channels), the fixed cost of maintaining the system, the reliability of the input, additional sources of noise, and the relative costs of upstrea

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Sun, Ying, Chen Chen, Sanya Liu, Qiwang Chen, and Lin Zhou. "Redesign of Channel Codes for Joint Source-Channel Coding Systems over One-Dimensional Inter-Symbol-Interference Magnetic Recording Channels." Electronics 11, no. 21 (2022): 3490. http://dx.doi.org/10.3390/electronics11213490.

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Although the joint source-channel coding (JSCC) system based on double protograph low-density parity-check (DP-LDPC) codes has been shown to possess excellent error performance over additive white Gaussian noise (AWGN) channels, it cannot perform well over one-dimensional inter-symbol-interference (OD-ISI) magnetic recording channels. In this study, a new JSCC system with a three-stage serially concatenated framework of Turbo equalization is firstly proposed for OD-ISI magnetic recording channels. Then, a modified joint protograph extrinsic information transfer (M-JPEXIT) algorithm is put forw

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A. Aliesawi, Salah, Dena S. Alani, and Abdullah M. Awad. "Secure image transmission over wireless network." International Journal of Engineering & Technology 7, no. 4 (2018): 2758. http://dx.doi.org/10.14419/ijet.v7i4.15691.

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The advances recently seen in data compression, and communication systems, have made it viable to design wireless image transmission systems. For many applications such as confidential transmission, military and medical applications, data encryption techniques should be also used to protect the confidential data from intruders. For these applications, both encryption and compression need to be performed to transmit a message in a fast and secure way. Further, the wireless channels have fluctuating channel qualities and high bit error rates. In this paper, a new scheme based on encryption and c

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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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Sofi, Naima, 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): 898–907. https://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 l

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Liu, Li, Xiu Ping Zheng, and Li Jun Li. "Performance Analysis of WiMAX System Base on AMC Optimized Algorithm." Advanced Materials Research 532-533 (June 2012): 610–14. http://dx.doi.org/10.4028/www.scientific.net/amr.532-533.610.

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Aimed at WiMAX-OFDM system, an optimized algorithm for AMC was proposed from the angle of channel estimation. Simulation experiments were carried on in SUI channels which were typically slow fading, and influences of the traditional AMC technology and optimized AMC algorithm on performance of system were analyzed. Results show that the optimized AMC algorithm not only improves accuracy of channel estimation, but also reduces errors between the predicted signal-to-noise ratio and the actual SNR, which makes selected modulation and coding scheme more reasonable. Finally, the WiMAX system can obt

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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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Nejwa, El Maammar, Bri Seddik, and Foshi Jaouad. "Performances Concatenated LDPC based STBC-OFDM System and MRC Receivers." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 1 (2018): 622–30. https://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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Abid, Zainab Majeed. "Performance of Different Concatenated Coding Schemes for CDMA System." Journal of Engineering 24, no. 12 (2018): 60–72. http://dx.doi.org/10.31026/j.eng.2018.12.06.

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In this paper different channel coding and interleaving schemes in DS/CDMA system over multipath fading channel were used. Two types of serially concatenated coding were presented. The first one composed of Reed-Solomon as outer code, convolutional code as inner code and the interleaver between the outer and inner codes and the second consist of convolutional code as outer code, interleaved in the middle and differential code as an inner code. Bit error rate performance of different schemes in multipath fading channel was analyzed and compared. Rack receiver was used in DS/CDMA receiver to com

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Almaamory, Aqiel N. "LDPC CODED MULTIUSER MC-CDMA PERFORMANCE OVERMULTIPATH RAYLEIGH FADING CHANNEL." Journal of Engineering 17, no. 04 (2011): 1039–46. http://dx.doi.org/10.31026/j.eng.2011.04.28.

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This work presents the simulation of a Low density Parity Check (LDPC) coding scheme withmultiuserMulti-Carrier Code Division Multiple Access (MC-CDMA) system over Additive WhiteGaussian Noise (AWGN) channel and multipath fading channels. The decoding technique used inthe simulation was iterative decoding since it gives maximum efficiency with ten iterations.Modulation schemes that used are Phase Shift Keying (BPSK, QPSK and 16 PSK), along with theOrthogonal Frequency Division Multiplexing (OFDM). A 12 pilot carrier were used in the estimatorto compensate channel effect. The channel model used

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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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Wang, Dan, and Chi Yun Xu. "Research on Adaptive Modulation and Coding Technology in LTE-A System." Applied Mechanics and Materials 513-517 (February 2014): 2534–37. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.2534.

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In order to further improve the throughput and performance of the LTE system in the LTE-A system,this paper proposes a kind of AMC before the channel equalization in the LTE-A system. The scheme will be the channel matrix rank, channel correlation and channel equalization of SNR together as parameter for MCS, through the CQI-SNR curve to find the channel equalization before the final CQI to complete the feedback.And it solves the problems that the traditional AMC only relies on the SNR, and the SNR accuracy requirements. The theory and simulation results show, this scheme can improve the syste

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Röth, Kai, Shuai Shao, and Julijana Gjorgjieva. "Efficient population coding depends on stimulus convergence and source of noise." PLOS Computational Biology 17, no. 4 (2021): e1008897. http://dx.doi.org/10.1371/journal.pcbi.1008897.

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Sensory organs transmit information to downstream brain circuits using a neural code comprised of spikes from multiple neurons. According to the prominent efficient coding framework, the properties of sensory populations have evolved to encode maximum information about stimuli given biophysical constraints. How information coding depends on the way sensory signals from multiple channels converge downstream is still unknown, especially in the presence of noise which corrupts the signal at different points along the pathway. Here, we calculated the optimal information transfer of a population of

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Krauss, J. A. "Source coding, channel coding and modulation techniques used in the ATVA-progressive system." IEEE Transactions on Broadcasting 37, no. 4 (1991): 170–72. http://dx.doi.org/10.1109/11.106208.

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Jumaev, Odil, Dzmitry Karpovich, Muhriddin Ismoilov, Giyosjon Makhmudov, and Ramil Sayfulin. "Algorithms to improve system reliability." E3S Web of Conferences 627 (2025): 04008. https://doi.org/10.1051/e3sconf/202562704008.

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This article provides a detailed description of the main stages of information processing, specifically, the data on discretization, coding and modulation, as well as the structural analysis of discrete communication systems, which include methods of transmitting information over a distance via discrete interface channels. Based on the study of the main characteristics of the signal, the parameters of the information channel are analyzed. Attention is paid to the methods of signal processing during the reception of the signal by the system interface. The technical parameters of the communicati

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M. Abdulkhudhur, Shurooq, and Abdulkareem A. Kadhim. "PERFORMANCE OF NETWORK CODING SCHEMES FOR 5G SYSTEM." Iraqi Journal of Information & Communications Technology 4, no. 2 (2021): 1–8. http://dx.doi.org/10.31987/ijict.4.2.147.

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Huge data rates have been provided by 5G wireless communication systems using millimeter wave (mmWave) band that have frequencies ranging from 30 to 300 GHz. mmWave provides much wider bandwidth than the existing 4G band. The 5G network deals with massive number of devices. This presents many challenges including capacity, end to end delay, data rate, and very large number of connections. In this paper, the main task is to apply network coding to 5G mmWave communication system to increase the throughput of the communication links. Simple packet-based network coding schemes using butterfly netw

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Kim, Eon Gon. "Performance Analysis of CC-8PSSK System with SC Diversity Technology through T2T Channel." Webology 19, no. 1 (2022): 4662–71. http://dx.doi.org/10.14704/web/v19i1/web19310.

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For performance improvements of T2T (train to train) communication, it is demanded to adapt a hybrid technique such as coding and diversity reception to overcome double fading channel. To ensure performance improvements of transmitted data generated by modulator, a proposed method adopts PSSK (phase-silence-shift-keying) modulation which is the hybrid method of PPM and PSK. In this paper, the performance of CC(convolutional coded) 8 PSSK system with SC(selective combining) diversity reception technique is analyzed under T2T channel which is described by double Rician fading channel using Simul

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Babalola, Oluwaseyi Paul, and Vipin Balyan. "Efficient Channel Coding for Dimmable Visible Light Communications System." IEEE Access 8 (2020): 215100–215106. http://dx.doi.org/10.1109/access.2020.3041431.

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Chen, Liquan, and Miao Lu. "Information Hiding Capacities in Multiple Antennas Channel Coding System." Procedia Engineering 15 (2011): 1848–53. http://dx.doi.org/10.1016/j.proeng.2011.08.344.

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