Title :
Adaptive minimum symbol-error-rate CDMA linear multiuser detector for pulse-amplitude modulation
Author :
Samingan, A.K. ; Chen, S. ; Hanzo, L.
Author_Institution :
Dept. of Electron. & Comput. Sci., Southampton Univ., UK
Abstract :
An adaptive minimum symbol error rate (MSER) linear multiuser detector (MUD) is proposed for direct sequence code division multiple access (DS-CDMA) systems employing multilevel pulse-amplitude modulation (M-PAM) scheme. Based on kernel density estimation for approximating the symbol error rate (SER) from training data, a least mean squares (LMS) style stochastic gradient algorithm called the least SER (LSER) is developed for training linear MUDs. Computer simulation is used to investigate the performance of this LSER MUD.
Keywords :
code division multiple access; error statistics; gradient methods; least mean squares methods; multiuser detection; pulse amplitude modulation; spread spectrum communication; stochastic processes; CDMA linear multiuser detector; adaptive minimum symbol-error-rate; direct sequence code division multiple access; kernel density estimation; least mean squares; multilevel pulse-amplitude modulation scheme; stochastic gradient algorithm; Detectors; Direct-sequence code-division multiple access; Error analysis; Kernel; Least squares approximation; Modulation coding; Multiaccess communication; Multiuser detection; Pulse modulation; Training data;
Conference_Titel :
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
Print_ISBN :
0-7803-7757-5
DOI :
10.1109/VETECS.2003.1208906
