Title :
A novel blind diversity combining receiver for CDMA systems
Author :
Bugallo, Mónica E. ; Miguez, Joaquin ; Castedo, Luis
Author_Institution :
Departamento de Electronica a Sistemas, Univ. da Coruna, Spain
Abstract :
This paper addresses the problem of blind multiple access interference (MAI) and intersymbol interference (ISI) suppression in direct sequence code division multiple access (DS-CDMA) systems. In order to take advantage of the diversity inherent to multipath channels, we introduce a blind RAKE multiuser receiver that proceeds in two steps. First, soft estimates of the desired user transmitted symbols are obtained from each propagation path using a bank of appropriate linearly constrained maximum likelihood linear (LCMLL) receivers. Afterwards, these estimates are adequately combined to enhance the signal to interference and noise ratio (SINR)
Keywords :
AWGN; code division multiple access; diversity reception; interference suppression; intersymbol interference; maximum likelihood detection; multipath channels; radio receivers; spread spectrum communication; DS-CDMA systems; ISI suppression; MAI suppression; SINR; blind RAKE multiuser receiver; blind diversity combining receiver; direct sequence code division multiple access; intersymbol interference suppression; linearly constrained maximum likelihood linear receivers; multipath channels; multiple access interference suppression; signal to interference plus noise ratio; Direct-sequence code-division multiple access; Diversity reception; Interference constraints; Intersymbol interference; Maximum likelihood estimation; Multiaccess communication; Multipath channels; Multiple access interference; RAKE receivers; Signal to noise ratio;
Conference_Titel :
Signal Processing and its Applications, Sixth International, Symposium on. 2001
Conference_Location :
Kuala Lumpur
Print_ISBN :
0-7803-6703-0
DOI :
10.1109/ISSPA.2001.950165
