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Factor-Graph-Based Soft Self-Iterative Equalizer for Multipath Channels

Lu, Ben; Yue, Guosen; Wang, Xiaodong; Madihian, Mohammad

We consider factor-graph-based soft self-iterative equalization in wireless multipath channels. Since factor graphs are able to characterize multipath channels to per-path level, the corresponding soft self-iterative equalizer possesses reduced computational complexity in sparse multipath channels. The performance of the considered self-iterative equalizer is analyzed in both single-antenna and multiple-antenna multipath channels. When factor graphs of multipath channels have no cycles or mild cycle conditions, the considered self-iterative equalizer can converge to optimum performance after a few iterations; but it may suffer local convergence in channels with severe cycle conditions.


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More Information

Published In
EURASIP Journal on Wireless Communications and Networking
187 - 196
Hindawi Publishing Corporation
Academic Units
Electrical Engineering
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