Title :
Convergence of iterative decoding
Author_Institution :
Inst. of Telecommun., Stuttgart Univ., Germany
fDate :
5/13/1999 12:00:00 AM
Abstract :
A novel method for visualising the convergence behaviour of iterative decoding schemes is proposed. Each constituent decoder is represented by a mutual information transfer characteristic which describes the flow of extrinsic information through the soft in/soft out decoder. The exchange of extrinsic information between constituent decoders is plotted in an extrinsic information transfer chart. The concepts are illustrated for an iterative demapping and decoding scheme
Keywords :
convergence of numerical methods; iterative decoding; turbo codes; convergence behaviour; extrinsic information; information transfer chart; iterative decoding; iterative demapping; mutual information transfer characteristic; soft in/soft out decoder;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990555
