CTH08-2: EXIT Chart Analysis for Doubly Generalized LDPC Codes

2006 ◽  
Author(s):  
Yige Wang ◽  
Marc Fossorier
Keyword(s):  
Ldpc Codes ◽  
Exit Chart

EXIT Chart Analysis of Puncturing for Non-Binary LDPC Codes

2014 ◽  
Vol 18 (12) ◽  
pp. 2089-2092 ◽  
Author(s):  
Kuntal Deka ◽  
A. Rajesh ◽  
Prabin Kumar Bora
Keyword(s):  
Ldpc Codes ◽  
Exit Chart

EXIT Chart Based Design of Irregular LDPC Codes for Large-MIMO Systems

2013 ◽  
Vol 17 (1) ◽  
pp. 115-118 ◽  
Author(s):  
T. Lakshmi Narasimhan ◽  
A. Chockalingam
Keyword(s):  
Mimo Systems ◽  
Ldpc Codes ◽  
Exit Chart ◽  
Irregular Ldpc Codes

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 Analysis for Split-LDPC Codes

2006 ◽  
Author(s):  
Kai Xie ◽  
Li Wang ◽  
Gil Shamir ◽  
Joseph Boutros
Keyword(s):  
Ldpc Codes ◽  
Exit Chart
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