Title :
Subspace-based blind detection for multipath CDMA: an efficient adaptive implementation
Author :
Burykh, Serhii ; Chkeif, A. ; Abed-Meraim, Karim
Author_Institution :
Dept. Traitement du Signal et des Images, ENST, Paris, France
Abstract :
This work deals with the problem of signal reception in code division multiple access (CDMA) systems. We present an adaptive detector for multipath CDMA channels which mitigates the effects of multipath propagation (interchip and intersymbol interference) and multiple-access interference. It can be suitably implemented in mobile terminals of the CDMA systems due to its low complexity and single-user structure. The proposed detector can be viewed as an efficient adaptive implementation of the batch-processing subspace-based method proposed by Torlak and Xu (see IEEE Trans. on SP, vol.45, no.1, p.137-47, 1997). In this work, we also give the theoretical and experimental justification of the robustness of the method against channel order overestimation errors
Keywords :
adaptive signal detection; cellular radio; code division multiple access; intersymbol interference; multipath channels; multiuser channels; personal communication networks; spread spectrum communication; DS-CDMA system; adaptive detector; batch-processing subspace-based method; cellular communications; channel order overestimation error robustness; code division multiple access; decentralized multi-user detector; interchip interference; intersymbol interference; mobile terminals; multipath CDMA systems; multipath propagation; multiple-access interference; near-far resistance; personal communications; signal reception; single-user structure; subspace-based blind detection; system processing gain; Delay effects; Detectors; Ear; Finite impulse response filter; Intersymbol interference; Minimization methods; Multiaccess communication; Multiple access interference; Pulse shaping methods; Robustness;
Conference_Titel :
Signal Processing and its Applications, Sixth International, Symposium on. 2001
Conference_Location :
Kuala Lumpur
Print_ISBN :
0-7803-6703-0
DOI :
10.1109/ISSPA.2001.950168