Journal of Communications and Networks

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Rate Bounds for MIMO Relay Channels

  • Lo, Caleb K. (Wireless Networking and Communications Group, Department of Electrical and Computer Engineering, The University of Texas at Austin) ;
  • Vishwanath, Sriram (Wireless Networking and Communications Group, Department of Electrical and Computer Engineering, The University of Texas at Austin) ;
  • Heath, Jr., Robert W. (Wireless Networking and Communications Group, Department of Electrical and Computer Engineering, The University of Texas at Austin)
  • Published : 2008.06.30
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Abstract

This paper considers the multi-input multi-output (MIMO) relay channel where multiple antennas are employed by each terminal. Compared to single-input single-output (SISO) relay channels, MIMO relay channels introduce additional degrees of freedom, making the design and analysis of optimal cooperative strategies more complex. In this paper, a partial cooperation strategy that combines transmit-side message splitting and block-Markov encoding is presented. Lower bounds on capacity that improve on a previously proposed non-cooperative lower bound are derived for Gaussian MIMO relay channels.

Keywords

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