Linear Differentially Coherent Multiuser Detection for Multipath Channels

Authors:
Howard C. Huang;Sergio Verdú
Affiliations:
Bell Laboratories, Lucent Technologies, Holmdel, NJ 07733, U.S.A. E-mail: hchuang@beltlabs.com;Department of Electrical Engineering, Princeton University, Princeton, NJ 08544, U.S.A. E-mail: verdu@princeton.edu
Venue:
Wireless Personal Communications: An International Journal
Year:
1998

Citing 4
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Abstract

By combining multipath processing, differential signaldetection, and multiuser detection techniques, we develop a class of near-far resistant linear detectors for differentially coherent multipath signals.We derive and establish performance relationships amongthe following detectors: an optimally near-far resistant detector,a suboptimum detector which does not require knowledge of the signal coordinates, and a minimum mean square error (MMSE) detectorwhich achieves near-optimum asymptotic efficiency. We present an adaptive multiuser detector which converges to the MMSE detector without training sequencesand which requires less information than the conventional single user rake receiver.