Code division multiple access based on independent codes and turbo decoding

Loïc Brunel, Joseph Boutros

Research output: Contribution to journalArticle

9 Citations (Scopus)


We study a multiple access encoding/decoding algorithm based on iterative (turbo) decoding. The algorithm is suitable for both synchronous and asynchronous systems. The quasi-orthogonal pseudo-noise sequences of the DS-SSMA system are replaced by independent channel codes constructed by combining convolutional codes and random interleavers. The interference is rebuilt using soft output information. The results show that the iterative joint decoder is able to completely eliminate the co-channel interference. The performance of the multiple access system tends practically to that of a single user system.

Original languageEnglish
Pages (from-to)401-410
Number of pages10
JournalAnnales des Telecommunications/Annals of Telecommunications
Issue number7
Publication statusPublished - 1 Jul 1999


ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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