Multiuser interference cancellation in time-varying channels |
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Authors: | Cho S E Song H C Hodgkiss W S |
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Institution: | Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, California 92093-0407, USA scho@ucsd.edu |
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Abstract: | In this letter, an adaptive time-reversal multichannel combiner is embedded within an iterative successive interference cancellation receiver. With the addition of matching pursuit, a sparse channel estimation technique, the combined receiver is shown to provide both temporal interference cancellation as well as spatial interference suppression in decoding simultaneous transmissions from separate users in a time-varying underwater acoustic environment. Experimental data collected during the KAM11 experiment illustrates that for a two-user multiple-access system, multiuser separation can be achieved. |
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