Résumé: A number of different iterative decoding methods are proposed for the multiuser interference cancelation in a code-division multiple-access system where turbo-codes are utilized for forward error correction (FEC). In the proposed methods, the individual users are decoded separately with the operation of iterative interference cancelation being mixed with the iterative decoding of turbo-code. This results in a modest increase in the overall complexity as compared to a conventional single-user receiver utilizing turbo-code for FEC. Numerical results are presented showing that the proposed iterative decoders show an improvement in the bit error rate performance and/or a reduction in the computational complexity as compared to similar previously known methods reported in [2] and [3].

Langue: Anglais