Multichannel Algorithms for Simultaneous Equalization andInterference Suppression

Authors:
Y. Kim;S. Shamsunder
Affiliations:
Department of Electrical Engineering, Colorado State University, Fort Collins, CO 80523, U.S.A.;Department of Electrical Engineering, Colorado State University, Fort Collins, CO 80523, U.S.A.
Venue:
Wireless Personal Communications: An International Journal
Year:
1998

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Abstract

This paper proposes techniques for simultaneous cancellation of intersymbol and interchannel or multi-access interference (ISI and ICI) thatshows up in several multi-input, multi-output (MIMO) communication channels.Correlation and kurtosis based optimization criteria are derived formulti-channel decision feedback equalizers (MC-DFE) and compared with thepopular Godard algorithm (CMA) and the minimum mean-square error in adecision directed mode (MMSE-DD). The proposed adaptive algorithms areeasily extended to a scenario with more than two users with thecomputational complexity increasing linearly with the number of inputs.Simulation results show that the algorithms converge to the global minimumin a blind environment with channels that introduce moderate distortion.