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Proceedings of 1994 28th Asilomar Conference on Signals, Systems and Computers (1994)
Pacific Grove, CA, USA
Oct. 31, 1994 to Nov. 2, 1994
ISSN: 1058-6393
ISBN: 0-8186-6405-3
pp: 1149-1153
S.V. Schell , Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA, USA
W.A. Gardner , Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA, USA
ABSTRACT
The problem of adapting a spatial filter to reject co-channel interference experienced in narrowband digital cellular systems, and IS-54 in particular, is addressed. A two-part approach using blind adaptive spatial filtering and decision-directed adaptive spatial filtering is proposed to circumvent the difficulties associated with the use of training signals or schemes based on direction finding. A spatial filter, blindly adapted using the Phase SCORE algorithm, obtains an initial estimate of the symbol stream. Decision-directed adaptation then further refines this spatial filter to obtain a high-quality estimate of the desired symbol stream. Computer simulation results illustrate the successful operation of the new scheme.<>
INDEX TERMS
cochannel interference, interference suppression, cellular radio, land mobile radio, radiofrequency interference, spatial filters, adaptive filters, digital radio
CITATION

S. Schell, W. Gardner and J. Schenck, "Adaptive spatial filtering for co-channel interference rejection in narrowband digital cellular systems," Proceedings of 1994 28th Asilomar Conference on Signals, Systems and Computers(ACSSC), Pacific Grove, CA, USA, 1995, pp. 1149-1153.
doi:10.1109/ACSSC.1994.471639
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