1. Factor-Graph-Based Soft Self-Iterative Equalizer for Multipath Channels
- Author
-
Lu Ben, Yue Guosen, Wang Xiaodong, and Madihian Mohammad
- Subjects
factor graph ,equalizer ,iterative processing ,multipath fading ,MIMO ,Telecommunication ,TK5101-6720 ,Electronics ,TK7800-8360 - Abstract
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.
- Published
- 2005
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