Convex Optimization
Optimal power allocation for relayed transmissions over Rayleigh-fading channels
IEEE Transactions on Wireless Communications
Distributed Adaptive Power Allocation for Wireless Relay Networks
IEEE Transactions on Wireless Communications
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
Capacity bounds and power allocation for wireless relay channels
IEEE Transactions on Information Theory
Cooperative Strategies and Capacity Theorems for Relay Networks
IEEE Transactions on Information Theory
On the diversity gain in cooperative relaying channels with imperfect CSIT
IEEE Transactions on Communications
IEEE Transactions on Wireless Communications
On the diversity-multiplexing tradeoff of amplify-and-forward half-duplex relaying
IEEE Transactions on Communications
Wireless Communications & Mobile Computing
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We consider a dual-hop regenerative relay system with multiple antennas at the destination. Subject to a total power constraint, we explore adaptive power allocation between the source and relay to minimize the system outage probability and the average symbol error rate. Simulation results show that the presented adaptive power allocation solutions significantly outperform the uniform power allocation. For a fixed relay location, we show that using two destination antennas brings significant power saving and performance improvement over using one destination antenna, and that using more than two destination antennas does not necessarily bring further performance improvement. It is also found that by using more destination antennas and/or choosing an appropriate relay location, less power will be needed at the relay.