Title :
Adaptive minimum-BER linear multiuser detection for CDMA signals in multipath channels with 4-QAM constellation
Author :
Samingan, A.K. ; Chen, S. ; Hanzo, L.
Author_Institution :
Dept. of Electron. & Comput. Sci., Southampton Univ., UK
fDate :
5/24/2001 12:00:00 AM
Abstract :
An adaptive minimum-BER linear multiuser detector called the least BER (LBER) algorithm, originally developed for BPSK modulation, is extended to 4-QAM modulation. Initial simulation results show that the proposed LBER detector has better performance, in terms of faster convergence rate and smaller steady-state BER, than the existing AMBER detector
Keywords :
adaptive signal detection; code division multiple access; error statistics; gradient methods; multipath channels; multiuser channels; quadrature amplitude modulation; 4-QAM constellation; CDMA signals; adaptive minimum-BER linear multiuser detection; binary signalling schemes; convergence rate; least BER algorithm; multipath channels; steady-state BER; stochastic gradient;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20010477
