Diversity-multiplexing tradeoff in half-duplex relay systems


IEEE International Conference on Communications (ICC 2007), Glasgow, United Kingdom, 24 - 28 June 2007, pp.689-694 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/icc.2007.118
  • City: Glasgow
  • Country: United Kingdom
  • Page Numbers: pp.689-694
  • Middle East Technical University Affiliated: No


We study the multiple antenna half-duplex relay channel from the diversity-multiplexing tradeoff (DMT) perspective. We find performance upper bounds and show that compress-and-forward (CF) protocol achieves the upper bound. We argue that although it is hard to find the exact DMT expressions for decode-and-forward (DF) type protocols, they would be suboptimal in the multiple antenna case. We also study the multiple-access relay channel (MARC), and evaluate how CF works in this system. Our results show that CIF is a robust strategy, which performs well in different relay networks and multiple antenna scenarios.