BER optimized unimode precoder design for MIMO-OFDM based spatial multiplexing systems

Ching Hui Chen*, Carrson C. Fung

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

A bit error rate optimized unimode selection algorithm is proposed for MIMO-OFDM based spatial multiplexing systems using linear receivers. For a fixed number of antennas, the proposed scheme dynamically selects the number of subcarriers used for transmission. The proposed method increases the diversity advantage of spatial multiplexing systems without the use of computational expensive space-time receivers such as ML and VBLAST. Simulation results show that the proposed unimode technique outperforms existing ones in terms of link reliability by performing selection of data streams across different subcarriers, and compensating significantly attenuated subcarriers due to deep fades.

Original languageEnglish
Pages (from-to)819-823
Number of pages5
JournalEuropean Signal Processing Conference
StatePublished - 1 Dec 2011
Event19th European Signal Processing Conference, EUSIPCO 2011 - Barcelona, Spain
Duration: 29 Aug 20112 Sep 2011

Keywords

  • Antenna selection
  • MIMO-OFDM
  • Power allocation
  • Unimode precoder

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