A simple linear precoder for selection-type cooperative MIMO systems

  • Authors:
  • Byungwook Yoo;Wonwoo Park;Kyu Ha Lee;Chungyong Lee

  • Affiliations:
  • Dept. of Electrical and Electronic Eng., Yonsei University, South Korea;Dept. of Electrical and Electronic Eng., Yonsei University, South Korea;R&D Team, Samsung Thales Co. Ltd., South Korea;Dept. of Electrical and Electronic Eng., Yonsei University, South Korea

  • Venue:
  • IEEE Communications Letters
  • Year:
  • 2010

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Abstract

We propose a simple linear precoder for selection-type cooperative multiple-input multiple-output communication systems. After a received symbol vector is detected at destination, the link which has the highest minimum receive substream signal-to-noise-ratio between the source-destination link and the source-relay-destination link is selected as a transmission link. Under the assumption that the full channel state information is available at every node, source and relay precodering scheme, which is suitable for zero-forcing detector, is proposed. Simulation results show that the performance of the proposed relaying technique is comparable to that of the near-optimal linear protocol while offering lower computational complexity.