Modulation and demodulation for cooperative diversity in wireless systems
IEEE Transactions on Wireless Communications
Cooperative Communications with Outage-Optimal Opportunistic Relaying
IEEE Transactions on Wireless Communications
Selection Cooperation in Multi-Source Cooperative Networks
IEEE Transactions on Wireless Communications
Diversity order analysis of the decode-and-forward cooperative networks with relay selection
IEEE Transactions on Wireless Communications - Part 2
Cooperative communications with relay-selection: when to cooperate and whom to cooperate with?
IEEE Transactions on Wireless Communications
Performance analysis of single relay selection in rayleigh fading
IEEE Transactions on Wireless Communications
Threshold Selection for SNR-based Selective Digital Relaying in Cooperative Wireless Networks
IEEE Transactions on Wireless Communications - Part 1
Asymptotic BER analysis of threshold digital relaying schemes in cooperative wireless systems
IEEE Transactions on Wireless Communications - Part 1
Diversity and multiplexing: a fundamental tradeoff in multiple-antenna channels
IEEE Transactions on Information Theory
Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks
IEEE Transactions on Information Theory
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
A Survey of Distributed Relay Selection Schemes in Cooperative Wireless Ad hoc Networks
Wireless Personal Communications: An International Journal
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This paper studies two-hop cooperative demodulate-and-forward relaying using multiple relays in wireless networks. A threshold based relay selection scheme is considered, in which the reliable relays are determined by comparing source-relay SNR to a threshold, and one of the reliable relays is selected by the destination based on relay-destination SNR. The exact bit error rate of this scheme is derived, and a simple threshold function is proposed. It is shown that the network achieves full diversity order (N + 1) under the proposed threshold, where N is the number of relays in the network. Unlike some other full diversity achieving protocols in the literature, the requirement that the instantaneous/average SNRs of the source-relay links be known at the destination is eliminated using the appropriate SNR threshold.