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Factor-Graph-Based Soft-Input Soft-Output Detection for Frequency-Selective MIMO Channels

delete2012-10-01
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PRE
AI
W
Werner Haselmayr *
B
Bernhard Etzlinger
A
Andreas Springer
DOI:10.1109/LCOMM.2012.082012.121337delete
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Abstract

Abstract

En 中文
In this letter we consider a MIMO communication system with iterative detection over a frequency-selective MIMO channel. We present a soft-input soft-output MIMO detector based on a cyclic factor graph representation and the sum-product algorithm with two different message schedules (serial and parallel). Computer simulations show that both schedules provide near-optimum performance in terms of bit error rate, while achieving a remarkable reduction in complexity compared to the optimal MAP detector.
Keywords:
Factor graph
frequency-selective channel
iterative detection
MAP
MIMO
SPA
spatial multiplexing

Journal

IEEE Communications Letters cover
IEEE Communications Letters
IF:
4.4
Papers:
1.3W
Citations:
2.2W

Organization

J
Johannes Kepler University Linz
Scholars:
5.5K
Papers: 4.6K
Citations: 106