Outage analysis of opportunistic cooperation over Rayleigh fading channels
IEEE Transactions on Wireless Communications
IEEE Transactions on Signal Processing
IEEE Transactions on Signal Processing
Diversity through coded cooperation
IEEE Transactions on Wireless Communications
Opportunistic cooperation by dynamic resource allocation
IEEE Transactions on Wireless Communications
Opportunistic beamforming using dumb antennas
IEEE Transactions on Information Theory
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
Outage analysis of coded cooperation
IEEE Transactions on Information Theory
Cooperative communication in wireless networks
IEEE Communications Magazine
Outage probability analysis of cognitive transmissions: impact of spectrum sensing overhead
IEEE Transactions on Wireless Communications
An adaptive cooperation diversity scheme with best-relay selection in cognitive radio networks
IEEE Transactions on Signal Processing
Cooperative detection for primary user in cognitive radio networks
EURASIP Journal on Wireless Communications and Networking
Opportunistic Decode-and-Forward Relaying with Interferences at Relays
Wireless Personal Communications: An International Journal
An energy-efficient opportunistic relay assignment in wireless cooperative networks
International Journal of Sensor Networks
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The cooperative communication technology proposed in recent years enables network nodes to share their antennas to achieve diversity gain. In this paper, an efficient variation scheme on opportunistic cooperation is proposed by using an outage criterion, in which the cooperation mode will be adopted only when the channel from source to relay does not occur outage event. We derive a closed-form BER (bit error rate) expression for the proposed scheme over Rayleigh fading channels, showing that the full diversity is achieved by the new scheme. Also, the BER performance of the known coded cooperation is presented for the purpose of comparison with our scheme. Numerical results illustrate the superiority of the proposed scheme over the coded cooperation in terms of BER performance. It is pointed out that the corresponding BER advantage of the proposed scheme comes at the expense of increasing system overhead since the new scheme needs some feedback from relay to both source and destination.