Title :
Comparison of multiuser detectors for synchronous flat Rayleigh fading CDMA channels
Author :
Wu, Hsin Yu ; Duel-Hallen, Alexandra
Author_Institution :
Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA
fDate :
27 Jun-1 Jul 1994
Abstract :
Studies the performance of several multiuser detection schemes for synchronous CDMA frequency non-selective Rayleigh fading channels. In the first part of the paper, the asymptotic multiuser efficiency (AME) of the ideal decision-feedback detector is shown to be unity for any number of users. In the second part, the effect of channel estimation errors on the performance of multiuser detectors is investigated. The average BERs of the two-stage detector and the decorrelator in the presence of channel mismatch are evaluated through analysis and simulations
Keywords :
Rayleigh channels; code division multiple access; correlation methods; error statistics; fading; receivers; signal detection; synchronisation; BER; asymptotic multiuser efficiency; bit error rate; channel estimation errors; channel mismatch; decision-feedback detector; decorrelator; frequency nonselective Rayleigh fading channels; multiuser detectors; performance; synchronous flat Rayleigh fading CDMA channels; two-stage detector; AWGN; Bit error rate; Channel estimation; Code division multiplexing; Decorrelation; Detectors; Fading; Multiaccess communication; Multiuser detection; Rayleigh channels;
Conference_Titel :
Information Theory, 1994. Proceedings., 1994 IEEE International Symposium on
Conference_Location :
Trondheim
Print_ISBN :
0-7803-2015-8
DOI :
10.1109/ISIT.1994.394738
