Joint Source-Channel Coding with Inner Irregular Codes

被引：4

作者：

Thobaben, Ragnar ^{[1
]}

Schmalen, Laurent ^{[2
]}

Vary, Peter ^{[2
]}

机构：

[1] Royal Inst Technol KTH, Sch Elect Engn, ACCESS Linnaeus Ctr, Stockholm, Sweden

[2] Rhein Westfal TH Aachen, Inst Commun Syst & Data Proc IND, Aachen, Germany

来源：

2008 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY PROCEEDINGS, VOLS 1-6 | 2008年

关键词：

D O I：

10.1109/ISIT.2008.4595168

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

We address the optimization of joint source-channel coding schemes for iterative source-channel decoding of first-order Markov sources. Compared to the traditional design, we propose two novelties: (1) source encoders, providing code words with a minimum Hamming distance distance d(min) >= 2, realized by linear block codes, and (2) irregular channel encoders which are optimized for both the source characteristics and the conditions on the channel. Inner code rates Rc > 1 may be chosen in order to compensate for the additional source redundancy if required. Design examples for the AWGN channel and an overall code rate R=0.66 show that the proposed system is able to establish reliable communication within 0.3 dB of the capacity limit for an interleaver length of approximatively 200000 bits.

引用

页码：1153 / +

页数：2

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