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

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Abstract

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.
Original languageEnglish
Article number6287518
Pages (from-to)1624 -1627
Number of pages4
JournalIEEE Communications Letters
Volume16
Issue number10
DOIs
Publication statusPublished - 2012

Fields of science

  • 202030 Communication engineering
  • 202037 Signal processing
  • 202038 Telecommunications
  • 202029 Microwave engineering
  • 202033 Radar technology

JKU Focus areas

  • Mechatronics and Information Processing

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