Title :
Turbo multiuser detection for coded asynchronous DS-CDMA over frequency selective channels
Author :
Roumy, A. ; Fijalkow, I. ; Pirez, D.
Author_Institution :
Equipe de Taraitement des Images et du Signal, Univ. Lergy Pontiose, France
Abstract :
In order to achieve performant but low-complexity multiuser detection for coded signals, we propose to use a full turbo-CDMA structure. Noticing that a good order of demodulation is very effective in improving performance, we propose a new criterion for the order of demodulation in an asynchronous and frequency selective CDMA context. It takes into account both intersymbol and multiuser interference
Keywords :
AWGN channels; code division multiple access; demodulation; intersymbol interference; land mobile radio; multipath channels; multiuser channels; radio receivers; signal detection; spread spectrum communication; turbo codes; AWGN channel; asynchronous CDMA; coded asynchronous DS-CDMA; coded signals; demodulation; equalizers; frequency selective CDMA; frequency selective channels; intersymbol interference; low-complexity multiuser detection; mobile communications; multipath propagation; multiuser interference; performance; receiver; turbo multiuser detection; turbo-CDMA structure; Convolution; Convolutional codes; Demodulation; Detectors; Frequency; Intersymbol interference; Multiaccess communication; Multiuser detection; Signal detection; Spread spectrum communication;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2000 IEEE Sixth International Symposium on
Conference_Location :
Parsippany, NJ
Print_ISBN :
0-7803-6560-7
DOI :
10.1109/ISSSTA.2000.876505
