MIMO two-way relay channel: Diversity-multiplexing tradeoff analysis

A multi-hop two-way relay channel is considered in which all the terminals are equipped with multiple antennas. Assuming independent quasi-static Rayleigh fading channels and channel state information available at the receivers, we characterize the optimal diversity-multiplexing gain tradeoff (DMT) curve for a full-duplex relay terminal. It is shown that the optimal DMT can be achieved by a compress-and-forward type relaying strategy in which the relay quantizes its received signal and transmits the corresponding channel codeword. It is noteworthy that, with this transmission protocol, the two transmissions in opposite directions can achieve their respective single user optimal DMT performances simultaneously, despite the interference they cause to each other. Motivated by the optimality of this scheme in the case of the two-way relay channel, a novel dynamic compress-and-forward (DCF) protocol is proposed for the one-way multi-hop MIMO relay channel for a half-duplex relay terminal, and this scheme is shown to achieve the optimal DMT performance.

[1]  Elza Erkip,et al.  Multiple-Antenna Cooperative Wireless Systems: A Diversity–Multiplexing Tradeoff Perspective , 2006, IEEE Transactions on Information Theory.

[2]  Philip Schniter,et al.  On the achievable diversity-multiplexing tradeoff in half-duplex cooperative channels , 2005, IEEE Transactions on Information Theory.

[3]  Shlomo Shamai,et al.  Communication via decentralized processing , 2005, ISIT.

[4]  Ertem Tuncel,et al.  Slepian-Wolf coding over broadcast channels , 2006, IEEE Transactions on Information Theory.

[5]  Deniz Gündüz,et al.  Wyner-Ziv coding over broadcast channels using hybrid digital/analog transmission , 2008, 2008 IEEE International Symposium on Information Theory.

[6]  Lizhong Zheng,et al.  Diversity-multiplexing tradeoff in multiple-access channels , 2004, IEEE Transactions on Information Theory.

[7]  J. Nayak,et al.  Rate regions for the separated two-way relay channel , 2008, 2008 46th Annual Allerton Conference on Communication, Control, and Computing.

[8]  R. Knopp.  Two-Way Radio Networks with a Star Topology , 2006, 2006 International Zurich Seminar on Communications.

[9]  Abbas El Gamal,et al.  Capacity theorems for relay channels , 1979 .

[10]  A. Wittneben,et al.  Spectral Efficient Signaling for Half-duplex Relay Channels , 2005, Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005..

[11]  Lizhong Zheng,et al.  Diversity and multiplexing: a fundamental tradeoff in multiple-antenna channels , 2003, IEEE Trans. Inf. Theory.

[12]  Petar Popovski,et al.  The Anti-Packets Can Increase the Achievable Throughput of a Wireless Multi-Hop Network , 2006, 2006 IEEE International Conference on Communications.

[13]  Andrea J. Goldsmith,et al.  Diversity-Multiplexing Tradeoffs in MIMO Relay Channels , 2008, IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference.

[14]  Gregory W. Wornell,et al.  Cooperative diversity in wireless networks: Efficient protocols and outage behavior , 2004, IEEE Transactions on Information Theory.

[15]  Abbas El Gamal,et al.  Capacity theorems for the relay channel , 1979, IEEE Trans. Inf. Theory.

[16]  Deniz Gündüz,et al.  Wyner–Ziv Coding Over Broadcast Channels: Digital Schemes , 2009, IEEE Transactions on Information Theory.

[17]  Slawomir Stanczak,et al.  Coding theorems for the restricted half-duplex two-way relay channel with joint decoding , 2008, 2008 IEEE International Symposium on Information Theory.

[18]  Deniz Gündüz,et al.  Wyner-Ziv coding over broadcast channels , 2008, 2008 IEEE Information Theory Workshop.

[19]  Elza Erkip,et al.  User cooperation diversity. Part I. System description , 2003, IEEE Trans. Commun..

[20]  Tobias J. Oechtering,et al.  Broadcast Capacity Region of Two-Phase Bidirectional Relaying , 2007, IEEE Transactions on Information Theory.