Rate Bounds for MIMO Relay Channels

Details Rate Bounds for MIMO Relay Channels Rate Bounds for MIMO Relay Channels

2007-05-04

arxiv.org/abs/0705.0564v4

Computer Science

Information Theory

25 pages, 6 figures, submitted to Journal on Communications and Networks in December 2007, revised in April 2008

Scientific paper

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.

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