Proc. IEEE Asilomar Conf. on Signals, Systems, and Computers, vol. 1, pp. 32-36, Nov. 9-12, 2003, Pacific Grove, CA, invited paper.

Joint Space-Time Interference Cancellation and Channel Shortening

Roopsha Samanta, Robert W. Heath, Jr., and Brian L. Evans

Department of Electrical and Computer Engineering, Engineering Science Building, The University of Texas at Austin, Austin, TX 78712-1084 USA - -

Paper - Talk


In this paper, we present a framework for the design of space-time equalizers that perform joint interference cancellation and channel shortening in multi-user multiple-input multiple-output frequency-selective channels. The space-time filter coefficients and the shortened channel vectors are jointly optimized to minimize the interference-plus-noise using training data. The receiver design is completed by using an appropriate Viterbi equalizer in the second stage for inter-symbol interference equalization. The design is adapted to two different detection schemes: independent detection and ordered successive interference cancellation. Simulation results show acceptable symbol error performance with both detection schemes.

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Last Updated 11/13/04.