Title :
Adaptive MBER decision feedback multiuser receivers in frequency selective fading channels
Author :
De Lamare, Rodrigo C. ; Sampaio-Neto, Raimundo
Author_Institution :
CETUC/PUC-RIO, Rio de Janeiro, Brazil
Abstract :
In this letter we investigate adaptive minimum bit error rate (BER) decision feedback multiuser receivers for DS-CDMA systems in fast frequency selective Rayleigh fading channels. We examine stochastic gradient adaptive algorithms and introduce fast algorithms for minimizing the BER cost function from training data.
Keywords :
Rayleigh channels; adaptive signal detection; code division multiple access; error statistics; gradient methods; minimisation; multiuser detection; receivers; spread spectrum communication; stochastic processes; BER; DS-CDMA; Rayleigh fading channels; adaptive MBER decision feedback multiuser receivers; adaptive minimum bit error rate receivers; cost function; frequency selective fading channels; stochastic gradient adaptive algorithms; Bit error rate; Cost function; Decision feedback equalizers; Fading; Frequency; Intersymbol interference; Multiaccess communication; Multiple access interference; Multiuser detection; Vectors;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2002.808373
