Title :
Blind chip- and symbol rate CDMA receivers
Author :
Sorelius, Joakim ; Gesbert, David
Author_Institution :
Syst. & Control. Group, Uppsala Univ., Sweden
Abstract :
This paper deals with the problem of blind (and semi-blind) estimation of linear DS-CDMA receivers using multiple antennas in asynchronous intersymbol interference (ISI) channels. We introduce simple relations between receivers at the symbol rate and at the chip rate and derive deterministic constraints that can be used to determine these receivers in a blind manner, with small sample sizes. The chip rate receiver is shown to be close to the MMSE receiver. Connections with existing techniques are discussed
Keywords :
code division multiple access; intersymbol interference; least squares approximations; parameter estimation; radio receivers; radiofrequency interference; ISI; MMSE receiver; asynchronous intersymbol interference channels; blind estimation; chip rate CDMA receivers; deterministic constraints; linear DS-CDMA receivers; multiple antennas; semi-blind estimation; symbol rate CDMA receivers; Control systems; Detectors; Information systems; Interference constraints; Intersymbol interference; Laboratories; Multiaccess communication; Principal component analysis; Sensor arrays; Wireless communication;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 1999. SPAWC '99. 1999 2nd IEEE Workshop on
Conference_Location :
Annapolis, MD
Print_ISBN :
0-7803-5599-7
DOI :
10.1109/SPAWC.1999.783004
