EXIT Chart Aided LDPC Code Design for Symmetric Alpha-Stable Impulsive Noise

2017 ◽  
Vol 21 (3) ◽  
pp. 464-467 ◽  
Author(s):  
Bin Dai ◽  
Rongke Liu ◽  
Yi Hou ◽  
Ling Zhao ◽  
Zhen Mei
Keyword(s):  
Impulsive Noise ◽  
Ldpc Code ◽  
Code Design ◽  
Exit Chart

scholarly journals Design of LDPC Codes: A Survey and New Results

2017 ◽  
Vol 2 (3) ◽  
pp. 191 ◽  
Author(s):  
Gianluigi Liva ◽  
Shumei Song ◽  
Lan Lan ◽  
Yifei Zhang ◽  
Shu Lin ◽  
...  
Keyword(s):  
Ldpc Codes ◽  
Ldpc Code ◽  
Code Design ◽  
Finite Geometries ◽  
Open Problems ◽  
Exit Chart ◽  
Survey Paper ◽  
Starting Point ◽  
Structured Codes ◽  
Binary Input

This survey paper provides fundamentals in the design of LDPC codes. To provide a target for the code designer, we first summarize the EXIT chart technique for determining(near-)optimal degree distributions for LDPC code ensembles. We also demonstrate the simplicity of representing codes by protographs and how this naturally leads to quasi-cyclic LDPC codes. The EXIT chart technique is then extended to the special case of protograph-based LDPC codes. Next, we present several design approaches for LDPC codes which incorporate one or more accumulators, including quasi-cyclic accumulatorbased codes. The second half the paper then surveys severalalgebraic LDPC code design techniques. First, codes based on finite geometries are discussed and then codes whose designs are based on Reed-Solomon codes are covered. The algebraic designs lead to cyclic, quasi-cyclic, and structured codes. The masking technique for converting regular quasi-cyclic LDPC codes to irregular codes is also presented. Some of these results and codes have not been presented elsewhere. The paper focuses on the binary-input AWGN channel (BI-AWGNC). However, as discussed in the paper, good BI-AWGNC codes tend to be universally good across many channels. Alternatively, the reader may treat this paper as a starting point for extensions to more advanced channels. The paper concludes with a brief discussion of open problems.

EXIT-Chart-Based LDPC Code Design for 2D ISI Channels

2013 ◽  
Vol 49 (6) ◽  
pp. 2823-2826 ◽  
Author(s):  
Lingjun Kong ◽  
Yong Liang Guan ◽  
Jianping Zheng ◽  
Guojun Han ◽  
Kui Cai ◽  
...  
Keyword(s):  
Ldpc Code ◽  
Code Design ◽  
Exit Chart ◽  
Isi Channels

scholarly journals LDPC code design for asynchronous Slepian-Wolf coding

2010 ◽  
Vol 58 (2) ◽  
pp. 511-520 ◽  
Author(s):  
Zhibin Sun ◽  
Chao Tian ◽  
Jun Chen ◽  
Kon Wong
Keyword(s):  
Ldpc Code ◽  
Code Design

scholarly journals EXIT Chart-Based IRA Code Design for TDMR Turbo-Equalization System

2017 ◽  
Vol 65 (4) ◽  
pp. 1762-1774 ◽  
Author(s):  
Morteza Mehrnoush ◽  
Benjamin J. Belzer ◽  
Krishnamoorthy Sivakumar ◽  
Roger Wood
Keyword(s):  
Turbo Equalization ◽  
Code Design ◽  
Exit Chart
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