DocumentCode :
2176669
Title :
Blind self-synchronized receivers for DS/CDMA communications
Author :
Psaromiligkos, Ioannis N. ; Batalama, Stella N.
Author_Institution :
Dept. of Electr. Eng., State Univ. of New York, Buffalo, NY, USA
Volume :
2
fYear :
2000
fDate :
2000
Firstpage :
949
Abstract :
We consider blind adaptive linear receivers for the demodulation of DS/CDMA signals in asynchronous transmissions. The proposed structures are self-synchronized in the sense that adaptive synchronization and demodulation are viewed and treated as an integrated receiver operation. Two computationally efficient combined synchronization/demodulation schemes are proposed, developed and analyzed. The first scheme is based on the principles of minimum-variance-distortionless-response (MVDR) processing, while the second scheme follows the principles of auxiliary-vector filtering and exhibits enhanced performance in short data record scenarios. The coarse synchronization performance of combined synchronization/demodulation receivers under finite data record adaptation is also investigated. Analytic expressions are derived that approximate closely the probability of coarse synchronization error of the conventional correlator and the MVDR type combined synchronization/demodulation scheme and provide low cost highly accurate alternatives to the computationally demanding performance evaluation through simulations
Keywords :
adaptive systems; code division multiple access; demodulation; filtering theory; multiuser channels; probability; radio receivers; spread spectrum communication; synchronisation; AWGN channel; DS/CDMA communications; DS/CDMA signals; MVDR processing; adaptive synchronization; asynchronous transmissions; auxiliary-vector filtering; blind adaptive linear receivers; blind self-synchronized receivers; coarse synchronization error probability; computationally efficient schemes; demodulation; finite data record adaptation; integrated receiver operation; minimum-variance-distortionless-response; multiple access interference; performance; synchronization/demodulation receivers; AWGN; Analytical models; Computational modeling; Correlators; Demodulation; Filtering; Filters; High performance computing; Multiaccess communication; Performance analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
Type :
conf
DOI :
10.1109/ICC.2000.853638
Filename :
853638
Link To Document :
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