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Joint Relay and Antenna Selection for Dual-Hop Amplify-and-Forward MIMO Relay Networks

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3 Author(s)
Gayan Amarasuriya ; Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, Canada T6G 2V4 ; Chintha Tellambura ; Masoud Ardakani

Four joint relay and antenna selection strategies for dual-hop amplify-and-forward (AF) multiple-input multiple-output relay networks are studied. Two of them require full channel state information (CSI) whereas the other two require only partial CSI. The relays are either channel-assisted AF or fixed-gain AF type. The first joint selection strategy involves choosing the best relay and the best single transmit antennas at the source and the relay. The second strategy jointly involves choosing the best relay and the best single transmit/receive antenna pairs at the source-to-relay and relay-to-destination channels. Moreover, two partial selection strategies, which can be used when the global CSI is not available, are also proposed and analyzed. In order to quantify the system performance analytically, the exact outage probability of all selection strategies is derived in closed-form. Direct insights into the system-design are obtained by deriving the asymptotic outage probability, asymptotic average symbol error rate, diversity order and array gain.

Published in:

IEEE Transactions on Wireless Communications  (Volume:11 ,  Issue: 2 )