Title :
Concurrent constant modulus algorithm and decision directed scheme for synchronous DS_CDMA equalisation
Author :
Hadef, Mahmoud ; Weiss, Stephan
Author_Institution :
Sch. of Electron. & Comput. Sci., Southampton Univ.
Abstract :
In this paper, we derive a concurrent constant modulus algorithm (CMA) and decision directed (DD) scheme for blind multiuser equalization-suitable for downlink DS-CDMA systems. Adaptation is performed by concurrently minimizing two cost functions based on either a CM criterion or a DD scheme for all active users. Computer simulations are used to assess the performance of the algorithm
Keywords :
blind equalisers; code division multiple access; multiuser channels; spread spectrum communication; CMA; blind multiuser equalization; concurrent constant modulus algorithm; decision directed scheme; direct sequence-code division multiple access; downlink DS-CDMA system; Blind equalizers; Cost function; Decision feedback equalizers; Detectors; Downlink; Intersymbol interference; Maximum likelihood detection; Maximum likelihood estimation; Multiaccess communication; Multiple access interference;
Conference_Titel :
Statistical Signal Processing, 2005 IEEE/SP 13th Workshop on
Conference_Location :
Novosibirsk
Print_ISBN :
0-7803-9403-8
DOI :
10.1109/SSP.2005.1628591
