Stability analysis of the turbo decoding algorithm using Max-Log-MAP

Wei Sheng Wu*, Chung-Hsuan Wang, Mao Ching Chiu, Chi Chao Chao

*Corresponding author for this work

Research output: Contribution to journalConference article

Abstract

In this paper we investigate analytically the convergence properties of the iterative turbo decoding with the Max-Log-MAP algorithm for softoutput generation. With respect to the iterative decoding scheme, several equivalent mathematical formulations are derived to facilitate the stability analysis, based on which we show that turbo decoding with Max-Log-MAP has at least one fixed point but is in general suboptimal and may not even converge. Finally, some conditions are given to guarantee the convergence of the iterative turbo decoding.

Original languageEnglish
Number of pages1
JournalIEEE International Symposium on Information Theory - Proceedings
DOIs
StatePublished - 12 Sep 2002
Event2002 IEEE International Symposium on Information Theory - Lausanne, Switzerland
Duration: 30 Jun 20025 Jul 2002

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