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Performance optimization of iterative receiver for wireless communications based on realistic channel conditions

Xiaonan Shi, Yoshikazu Miyanaga
2014 Computers & electrical engineering  
Rayleigh, respectively) and fading parameter models (average vs. random azimuth spread and K factor) on system performance and complexity.  ...  Our simulation results also capture the effects of realistic vs. typical channel fading types (i.e., Rician vs.  ...  The more iterations of detection is also required for the correlated Rician fading comparing with the typical Rayleigh fading.  ... 
doi:10.1016/j.compeleceng.2014.02.012 fatcat:otqhv5mthnhozfodu52gte6zne

Effect of Bit Error Rate in LDPC Based OFDM System over AWGN Raician And Raileigh Fading Channels

Pragya Sharma
2015 International Journal on Recent and Innovation Trends in Computing and Communication  
Fading Channel using MATLAB.  ...  Modern communication systems are adopting new Morden technologies like OFDM (Ortogonal Frequency Division Multiplexing) and LDPC (Low Density Parity Check) for achieving high performance, low Bit Error  ...  RAYLEIGH AND AWGN FADING CHANNEL RAYLEIGH fading is a statistical model for studying the effect of a propagation environment on a radio signal, such that is used by wireless devices RAYLEIGH fading models  ... 
doi:10.17762/ijritcc2321-8169.150377 fatcat:s3nfdrdcp5atjfe7gevs7la34m

On the communication over strong atmospheric turbulence channels by adaptive modulation and coding

Ivan B. Djordjevic, Goran T. Djordjevic
2009 Optics Express  
channels by RF-feedback, and adapt powers and rates so that total channel capacity is maximized.  ...  The optimum power adaptation policy maximizing total channel capacity is derived. We show significant spectral efficiency performance improvement by employing this approach.  ...  With LDPC coding, the proposed scheme outperforms corresponding LDPC-coded FSO scheme at BER of 10 −6 in the strong atmospheric turbulence for R/B = 4 bits/s/Hz as follows: 5.25 dB in Rayleigh RF fading  ... 
doi:10.1364/oe.17.018250 pmid:19907616 fatcat:rpyc32kaxjhxtpcvaniop5hlm4

Deep-Learning Based Blind Recognition of Channel Code Parameters over Candidate Sets under AWGN and Multi-Path Fading Conditions [article]

Sepehr Dehdashtian, Matin Hashemi, Saber Salehkaleybar
2021 arXiv   pre-print
We propose a deep learning-based solution that I) is capable of identifying the channel code parameters for any coding scheme (such as LDPC, Convolutional, Turbo, and Polar codes), II) is robust against  ...  channel impairments like multi-path fading, III) does not require any previous knowledge or estimation of channel state or signal-to-noise ratio (SNR), and IV) outperforms related works in terms of probability  ...  dual-path Rayleigh fading channels with delay spread 10µs.  ... 
arXiv:2009.07774v2 fatcat:ekccapr6xfajlo2dthn7finure

Large-Girth Nonbinary QC-LDPC Codes of Various Lengths

Jie Huang, Lei Liu, Wuyang Zhou, Shengli Zhou
2010 IEEE Transactions on Communications  
fading channels.  ...  The proposed codes are appealing to practical adaptive systems where the block length and code rate need to be adaptively adjusted depending on traffic characteristics and channel conditions.  ...  Fig. 3 . 3 Performance of rate-1/2 nonbinary QC-LDPC codes of various lengths over Rayleigh facing channel. The Shannon limit for Rayleigh fading channel is 1.830 dB.  ... 
doi:10.1109/tcomm.2010.101210.090757 fatcat:jmrhrvptsndbthf6jwkaf3chdu

Construction of Adaptive Short LDPC Codes for Distributed Transmit Beamforming [article]

Ismail Shakeel, Ishtiaq Ahmad, Hajime Suzuki
2018 arXiv   pre-print
This paper proposes an adaptive Low Density Parity Check (LDPC) coding scheme for the DTB system. The proposed scheme constructs powerful LDPC codes with varying code-rates and block-lengths.  ...  This feature of the proposed scheme allows the DTB system to optimise its system resources, improve throughput and communicate reliably under large variation of different channel environments.  ...  The authors would like to acknowledge Dr Gerald Bolding (DST Group) for the valuable suggestions made to improve the P-LDPC code construction scheme described in this paper.  ... 
arXiv:1807.03526v2 fatcat:qfyybevsnjbxddsrha5hdaolca

Multiple-Symbol Differential Detection for Differentially Encoded LDPC Coded Systems

Yang Yu, Shiro Handa
2014 Journal of Communications  
In this paper, multiple-symbol differential detection (MSDD) is applied to differentially encoded LDPC (DE-LDPC) coded systems, which can avoid phase tracking and channel estimation and compensate the  ...  the two approaches, especially for high order modulation schemes.  Index Terms-low-density parity-check (LDPC) codes, differential encoded LDPC coded systems, multiple-symbol differential detection, differential  ...  The Rayleigh fading channels considered in this paper are Jake's model, and the normalized maximum Doppler frequency f D T s is set to 0.001 for slow fading channels and 0.01 for fast fading channels.  ... 
doi:10.12720/jcm.9.1.21-29 fatcat:pybibrw7czegfbejauroal5ohi

LDPC Codes for Flat Rayleigh Fading Channels with Channel Side Information

Yibo Jiang, Alexei Ashikhmin, Naresh Sharma
2008 IEEE Transactions on Communications  
In this paper, we design capacity approaching low-density parity-check (LDPC) codes in the low signal-to-noise ratio (SNR) regime for flat Rayleigh fading channels with channel side information at transmitter  ...  Index Termslow-density parity-check (LDPC) codes, mutual information, iterative decoding, fading, channel side information.  ...  ACKNOWLEDGMENT The authors would like to thank Eran Sharon for his Matlab file which was used in our simulation programs, and Uri Erez, Xinzhou Wu for helpful discussions.  ... 
doi:10.1109/tcomm.2008.041040 fatcat:haa6focuhje6zebkarm5rpvvua

Progressive Image Transmission Based on Joint Source-Channel Decoding Using Adaptive Sum-Product Algorithm

Weiliang Liu, DavidG Daut
2007 EURASIP Journal on Image and Video Processing  
A joint source-channel decoding method is designed to accelerate the iterative log-domain sum-product decoding procedure of LDPC codes as well as to improve the reconstructed image quality.  ...  The log-likelihood ratios (LLRs) of these bits are then modified by a weighting factor for the next iteration.  ...  Decoding in the case of fading channels For wireless communication, Rayleigh fading channel is typically a good channel model. Consider an uncorrelated flat Rayleigh fading channel.  ... 
doi:10.1186/1687-5281-2007-069805 fatcat:xjrimtb37zai5dqdzs5xw7rd4y

Progressive Image Transmission Based on Joint Source-Channel Decoding Using Adaptive Sum-Product Algorithm

Weiliang Liu, David G. Daut
2007 EURASIP Journal on Image and Video Processing  
A joint source-channel decoding method is designed to accelerate the iterative log-domain sum-product decoding procedure of LDPC codes as well as to improve the reconstructed image quality.  ...  The log-likelihood ratios (LLRs) of these bits are then modified by a weighting factor for the next iteration.  ...  Decoding in the case of fading channels For wireless communication, Rayleigh fading channel is typically a good channel model. Consider an uncorrelated flat Rayleigh fading channel.  ... 
doi:10.1155/2007/69805 fatcat:pakdc4ka25c73hbjjepf6bczte

An interleaver optimization for BICM-OFDM with convolutional codes over frequency-selective block fading channels

Yuta Hori, Hideki Ochiai
2014 2014 IEEE Wireless Communications and Networking Conference (WCNC)  
Nevertheless, the interleaver design suitable for BICM with convolutional code over general fading channels has not been well studied.  ...  In this paper, we propose an approach for optimizing conventional block interleavers in the framework of BICM-OFDM and demonstrate its effectiveness over frequency-selective Rayleigh and Ricean fading  ...  parity-check (LDPC) and turbo BERs for BICM-OFDM using LDPC code, turbo code, and convolutional code with random interleaver over frequency-selective Rayleigh fading channels. codes are desirable since  ... 
doi:10.1109/wcnc.2014.6952165 dblp:conf/wcnc/HoriO14 fatcat:l7nbpvvqfbdytachytldxwproe

Binary Diversity for Non-Binary LDPC Codes over the Rayleigh Channel [article]

Valentin Savin, David Declercq
2013 arXiv   pre-print
In this paper we analyze the performance of several bit-interleaving strategies applied to Non-Binary Low-Density Parity-Check (LDPC) codes over the Rayleigh fading channel.  ...  The technique of bit-interleaving used over fading channel introduces diversity which could provide important gains in terms of frame error probability and detection.  ...  CONCLUSIONS In this paper we investigate the non-binary LDPC codes transmitted over a Rayleigh fading channel.  ... 
arXiv:1301.4444v1 fatcat:zrl6ura7ubdhtl2suhybr6bipi

A Review: Spectral Efficiency Improvement Techniques

Channaveeramma E, Dr. K. M. Palaniswamy, Navodaya Institute of Technology
2020 International Journal of Engineering Research and  
fading channels.  ...  Types of Channels: The typical wireless channels are Rayleigh fading channel, Rician channel, Nakagami channel. In M-ary PSK, as the value of M increases, the spectral efficiency increases.  ... 
doi:10.17577/ijertv9is030608 fatcat:vzlkwmvdv5ayjp33cemyaecnd4

Generalized Adaptive Network Coded Cooperation (GANCC): A Unified Framework for Network Coding and Channel Coding [article]

Xingkai Bao, Jing Li
2010 arXiv   pre-print
A unified framework for network coding and channel coding, termed "generalized adaptive network coded cooperation" (GANCC), is proposed.  ...  This paper considers distributed coding for multi-source single-sink data collection wireless networks.  ...  For fairness, we have considered block Rayleigh fading channels, such that there are only m = 5 different channel realizations in each codeword regardless of the code length.  ... 
arXiv:1002.3629v1 fatcat:spvhma6q3reqroswxzmrimkg34

Space-Time Mesh Codes for the Multiple-Access Relay Network: Space vs. Time Diversity Benefits

Cheng-Chun Chang, Heung-No Lee
2007 2007 Information Theory and Applications Workshop  
In this paper, an iterative decoding scheme is designed for the mesh code and its BER performance in AWGN, fast Rayleigh fading, and quasi-static Rayleigh fading channels are investigated.  ...  Namely, the time-domain coding is desired when the channel exhibits fast fading; while the spatial domain coding is preferred when the channel is in quasi-static fading state.  ...  4 . 4 BER performance in AWGN, fast Rayleigh fading, and quasi-static Rayleigh fading.  ... 
doi:10.1109/ita.2007.4357565 fatcat:ybqvv3q7gbhgvn23zj34ugkrje
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