Capacity scaling laws in MIMO relay networks
IEEE Transactions on Wireless Communications
Optimal Design of Non-Regenerative MIMO Wireless Relays
IEEE Transactions on Wireless Communications
MIMO Configurations for Relay Channels: Theory and Practice
IEEE Transactions on Wireless Communications
Cooperative Diversity with Multiple-Antenna Nodes in Fading Relay Channels
IEEE Transactions on Wireless Communications
Multiple-antenna channel hardening and its implications for rate feedback and scheduling
IEEE Transactions on Information Theory
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
On the capacity of MIMO relay channels
IEEE Transactions on Information Theory
Grassmannian beamforming for MIMO amplify-and-forward relaying
IEEE Journal on Selected Areas in Communications
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In this paper, we investigate the performance of a multiuser wireless relay network with each of its nodes equipped with N antennas and transmit beamforming at its source and relay, where multiuser diversity (MD) is exploited to further improve the system performance. In the first part of this paper, by deriving the approximate error performance expression for a single-relay MD system without the direct link, we obtain the maximum diversity order achievable by the CSI-assisted amplify-and-forward (CAF) protocol. Then, by taking the direct link into consideration, we propose a sub-optimal transmit beamforming scheme and show the performance loss is very small. Copyright © 2010 John Wiley & Sons, Ltd.