Title :
Iterative demodulation of orthogonal signaling formats for DS-CDMA
Author :
Ström, Erik G. ; Miller, Scott L.
Author_Institution :
Dept. of Signal & Syst., Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
Iterative schemes for demodulating M-ary orthogonal signaling formats in direct-sequence code-division multiple access (DS-CDMA) systems are proposed and compared with the standard matched filter receiver and the standard parallel interference cancellation (PIC) receiver. The considered system is similar to the uplink (reverse link) of an IS-95 system. The channel is assumed to be a time-varying flat Rayleigh-fading channel, and a channel estimation scheme is proposed. The proposed receivers are shown to provide large capacity gains compared with the conventional receiver
Keywords :
Rayleigh channels; channel capacity; code division multiple access; demodulation; interference suppression; iterative methods; land mobile radio; multiuser channels; parameter estimation; radio links; radio receivers; radiofrequency interference; spread spectrum communication; telecommunication signalling; time-varying channels; DS-CDMA; IS-95 system; M-ary orthogonal signaling formats; channel estimation; direct-sequence code-division multiple access; iterative demodulation; large capacity gains; matched filter receiver; orthogonal signaling formats; parallel interference cancellation receiver; receivers; reverse link; time-varying flat Rayleigh-fading channel; uplink; Code standards; Demodulation; Detectors; Direct-sequence code-division multiple access; Interference cancellation; Interference suppression; Multiaccess communication; Multiple access interference; Rayleigh channels; Silicon carbide;
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
DOI :
10.1109/ICC.2000.853738
