Diversity-Multiplexing Tradeoffs in MIMO Relay Channels

—A multi-hop relay channel with multiple antenna terminals in a quasi-static slow fading environment is considered. For both full-duplex and half-duplex relays the fundamental diversity-multiplexing tradeoff (DMT) is analyzed. It is shown that, while decode-and-forward (DF) relaying achieves the optimal DMT in the full-duplex relay scenario, the dynamic decodeand-forward (DDF) protocol is needed to achieve the optimal DMT if the relay is constrained to half-duplex operation. For the latter case, static protocols are considered as well, and the corresponding achievable DMT performance is characterized.

• Type: Conference
• Year: 2008
• Where: GLOBECOM
• Authors: Deniz Gündüz, Andrea J. Goldsmith, H. Vincent Poor
• Keywords: Corresponding Achievable Dmt, GLOBECOM 2008, Optimal Dmt, Telecommunications , —A Multi-hop Relay