Minimum Terms of Residual Redundancy for Successful Iterative Source-Channel Decoding

Author

Adrat, Marc ; Clevorn, Thorsten ; Brauers, Johannes ; Vary, Peter

Author_Institution

FKIE/KOM, Res. Establ. of Appl. Sci., Wachtberg

Volume

10

Issue

11

fYear

2006

fDate

11/1/2006 12:00:00 AM

Firstpage

778

Lastpage

780

Abstract

Iterative source-channel decoding (ISCD) improves the error robustness of a digital communication system by iteratively evaluating natural residual source redundancy and artificial channel coding redundancy in a TURBO-like process. Based on recent results to extrinsic information transfer (EXIT) charts we present a novel (experimental) approach to quantify the minimum terms of residual redundancy which are needed for (almost) successful ISCD. Moreover, we clarify why in certain situations the decoding trajectory exceeds the EXIT-characteristic of soft decision source decoding (SDSD) in an ISCD scheme

Keywords

combined source-channel coding; iterative decoding; redundancy; turbo codes; EXIT chart; ISCD; SDSD; TURBO-like process; artificial channel coding redundancy; digital communication system; extrinsic information transfer; iterative source-channel decoding; minimum term; soft decision source decoding; Channel coding; Delay; Digital communication; Information analysis; Iterative decoding; Redundancy; Robustness; Signal design; Signal processing; Speech codecs;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2006.060544

Filename

4020539