Space-Time Coding
IEEE Transactions on Signal Processing
Cooperative relaying in multi-antenna fixed relay networks
IEEE Transactions on Wireless Communications
Improving amplify-and-forward relay networks: optimal power allocation versus selection
IEEE Transactions on Wireless Communications
Cooperative diversity over log-normal fading channels: performance analysis and optimization
IEEE Transactions on Wireless Communications - Part 2
Cooperative Diversity with Multiple-Antenna Nodes in Fading Relay Channels
IEEE Transactions on Wireless Communications
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
A simple Cooperative diversity method based on network path selection
IEEE Journal on Selected Areas in Communications
Transparent amplify-and-forward relaying in MIMO relay channels
IEEE Transactions on Wireless Communications
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In this paper, we consider a single-relay cooperative scenario, where the source, relay, and destination terminals are equipped with multiple transmit and receive antennas. We focus on the so-called transparent Amplify-and-Forward (T-AaF) for MIMO relay channels, in which the relay requires neither channel state information (CSI) nor synchronization of symbols or carrier. Specifically, we propose and analyze new selection schemes where the relay, based on the received signal energies, select the "best" received signals on the S → R hop and retransmits them to the destination terminal with either repetitive or selective transmission. Through the derivation of pairwise error probability (PEP) expressions and asymptotic order of diversity (AOD) analysis, we demonstrate that the proposed selection schemes maintain full diversity order. Furthermore, we show that selective transmission on R → D hop has better performance, better throughput, and significantly better energy efficiency than repetitive transmission.