Resource allocation for FDMA-based regenerative multihop links
IEEE Transactions on Wireless Communications
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
Fading relay channels: performance limits and space-time signal design
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
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In order to avoid the resource inefficiency of all-participated cooperation in wireless amplify-and-forward relay networks, a novel relay selection scheme based on the channel gain of the source-relay and relay-destination links is proposed. A condition is introduced to maximize the upper bound of the overall received signal-to-noise ratio (SNR). The relay nodes which have bad channel conditions are excluded in turn from the cooperation so that their released resources can be reallocated to other nodes. This paper adopts a simplified power allocation scheme that assumes each selected relay has equal power. The total power is optimally assigned between the source and the relay set. Simulation results show that the proposed scheme can achieve similar BER performance with the scheme which employs all relays and optimal power allocation, but only applies a subset of available relays.