DocumentCode :
290500
Title :
Programmable blind adaptive spatial filtering
Author :
Gardner, William A. ; Schenck, Jeffmy L. ; Schell, Stephan V.
Author_Institution :
Dept. of Electr. Eng., California Univ., Davis, CA, USA
Volume :
iv
fYear :
1994
fDate :
19-22 Apr 1994
Abstract :
In wireless communications, including cellular communication systems, spread spectrum overlay systems, and signals intelligence applications, the degradation caused by rapidly time-varying multipath and unknown co-channel interference can be reduced by adaptive spatial filtering using antenna arrays. In this paper we propose a flexible framework for adapting a spatial filter to extract signals of interest (SOIs) while rejecting signals not of interest (SNOIs) without using a training signal, array calibration data, or knowledge of spatial characteristics of the desired or interfering signals. The generic method within this framework exploits user-selected properties of the SOIs and/or SNOIs to transform the received data set into a new set in which the SOIs are more highly correlated between the two sets than are the SNOIs. The framework then applies the method of canonical correlation analysis to the original and transformed data sets to obtain a linear combining weight vector that performs the spatial filtering. Simulation results illustrate the performance of algorithms developed within the new framework
Keywords :
adaptive antenna arrays; adaptive filters; cellular radio; cochannel interference; correlation methods; interference suppression; multipath channels; programmable filters; spatial filters; time-varying filters; adaptive spatial filtering; algorithm performance; antenna arrays; canonical correlation analysis; cellular communication systems; degradation; flexible framework; generic method; linear combining weight vector; programmable blind adaptive spatial filtering; rapidly time-varying multipath interference; signals intelligence applications; signals not of interest; signals of interest; simulation; spatial filter; spread spectrum overlay systems; unknown co-channel interference; user-selected properties; wireless communications; Adaptive arrays; Adaptive filters; Antenna arrays; Degradation; Filtering; Intelligent systems; Interchannel interference; Spread spectrum communication; Time varying systems; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on
Conference_Location :
Adelaide, SA
ISSN :
1520-6149
Print_ISBN :
0-7803-1775-0
Type :
conf
DOI :
10.1109/ICASSP.1994.389878
Filename :
389878
Link To Document :
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