User menu

Accès à distance ? S'identifier sur le proxy UCLouvain

Turbo-equalization for multilevel modulation: an efficient low-complexity scheme

Primary tabs

Dejonghe, Antoine [UCL] Vandendorpe, Luc [UCL]

This paper addresses the problem of iterative equalization and decoding (turbo-equalization) when bit-interleaved multilevel modulations are considered. The goal is to propose an efficient low-complexity solution in this context, where optimal turbo-equalization is totally untractable. Therefore, we generalize reduced-complexity soft-in/soft-out (SISO) equalizers based on the minimum mean square error (MMSE) criterion (originally proposed in a BPSK context) to this particular scheme. Performances are illustrated through simulations. We show the influence of the mapping on the signal-to-noise ratio (SNR) threshold and on asymptotic performances, and link the obtained results to iterative demodulation and decoding on an additive white Gaussian noise (AWGN) channel.

Document type Communication à un colloque (Conference Paper) – Présentation orale avec comité de sélection
Publication date 2002
Conference "Proceedings of IEEE International Conference on Communications", New York, NY, USA (28 April-2 May 2002)
Peer reviewed yes
Host document "2002 IEEE International Conference on Communications. ConferenceProceedings. ICC 2002 (Cat. No.02CH37333)"- Vol. 3, p. 1863-1867 (ISBN : 0-7803-7400-2)
Publisher IEEE
Publication status Publié
Affiliation UCL - FSA/ELEC - Département d'électricité
Links
Bibliographic reference Dejonghe, Antoine ; Vandendorpe, Luc. Turbo-equalization for multilevel modulation: an efficient low-complexity scheme.Proceedings of IEEE International Conference on Communications (New York, NY, USA, 28 April-2 May 2002). In: 2002 IEEE International Conference on Communications. ConferenceProceedings. ICC 2002 (Cat. No.02CH37333), IEEE2002, p.Vol. 3, p. 1863-1867
Permanent URL http://hdl.handle.net/2078.1/68108