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Paper detail

Bidirectional MMSE Algorithms for Interference Mitigation in CDMA Systems over Fast Fading Channels

This paper presents adaptive bidirectional minimum mean-square error (MMSE) parameter estimation algorithms for fast-fading channels. The time correlation between successive channel gains is exploited to improve the estimation and tracking capabilities of adaptive algorithms and provide robustness against time-varying channels. Bidirectional normalized least mean-square (NLMS) and conjugate gradient (CG) algorithms are devised along with adaptive mixing parameters that adjust to the time-varying channel correlation properties. An analysis of the proposed algorithms is provided along with a discussion of their performance advantages. Simulations for an application to interference suppression in DS-CDMA systems show the advantages of the proposed algorithms.

preprint2013arXivOpen access
Patrick ClarkeRodrigo C. de Lamare
math.ITInformation Theory
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Patrick ClarkeRodrigo C. de Lamare

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