Turbo receivers for interleave-division multiple-access systems

Author

Cristea, Bogdan ; Roviras, Daniel ; Escrig, Benoît

Author_Institution

Sytron Technol. Overseas, Bucharest, Romania

Volume

57

Issue

7

fYear

2009

fDate

7/1/2009 12:00:00 AM

Firstpage

2090

Lastpage

2097

Abstract

In this paper several turbo receivers for Interleave-Division Multiple-Access (IDMA) systems will be discussed. The multiple access system model is presented first. The optimal, Maximum A Posteriori (MAP) algorithm, is then presented. It will be shown that the use of a precoding technique at the emitter side is applicable to IDMA systems. Several low complexity Multi-User Detector (MUD), based on the Gaussian approximation, will be next discussed. It will be shown that the MUD with Probabilistic Data Association (PDA) algorithm provides faster convergence of the turbo receiver. The discussed turbo receivers will be evaluated by means of Bit Error Rate (BER) simulations and EXtrinsic Information Transfer (EXIT) charts.

Keywords

error statistics; maximum likelihood estimation; multi-access systems; multiuser detection; radio receivers; Gaussian approximation; bit error rate; extrinsic information transfer charts; interleave-division multiple-access systems; maximum aposteriori algorithm; multi-user detector; precoding technique; probabilistic data association algorithm; turbo receivers; Bit error rate; Convolutional codes; Decoding; Detectors; Gaussian approximation; Multiaccess communication; Multipath channels; Multiple access interference; Multiuser detection; Transceivers; Multiple access systems, random permutations, turbo receivers, multipath channels, multiple-access interference;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2009.07.070525

Filename

5165404