LDGM codes for channel coding and joint source-channel coding of correlated sources

被引：53

作者：

Zhong, W ^{[1
]}

Garcia-Frias, J ^{[1
]}

机构：

[1] Univ Delaware, Dept Elect & Comp Engn, Newark, DE 19716 USA

来源：

EURASIP JOURNAL ON APPLIED SIGNAL PROCESSING | 2005年 / 2005卷 / 06期

基金：

美国国家科学基金会;

关键词：

channel coding; LDPC codes; LDGM codes; iterative decoding; correlated sources; joint source-channel coding;

D O I：

10.1155/ASP.2005.942

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We propose a coding scheme based on the use of systematic linear codes with low-density generator matrix (LDGM codes) for channel coding and joint source-channel coding of multiterminal correlated binary sources. In both cases, the structures of the LDGM encoder and decoder are shown, and a concatenated scheme aimed at reducing the error floor is proposed. Several decoding possibilities are investigated, compared, and evaluated. For different types of noisy channels and correlation models, the resulting performance is very close to the theoretical limits.

引用

页码：942 / 953

页数：12

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