Linear Differentially Coherent Multiuser Detection for Multipath Channels |
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Authors: | Huang Howard C Verdú Sergio |
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Affiliation: | (1) Bell Laboratories, Lucent Technologies, Holmdel, NJ, 07733, U.S.A. E-mail;(2) Department of Electrical Engineering, Princeton University, Princeton, NJ, 08544, U.S.A. E-mail |
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Abstract: | By combining multipath processing, differential signal detection, 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 among the 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) detector which achieves near-optimum asymptotic efficiency. We present an adaptive multiuser detector which converges to the MMSE detector without training sequences and which requires less information than the conventional single user rake receiver. |
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Keywords: | multiuser detection multipath channel blind adaptive algorithm |
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