Cooperative diversity in wireless networks: algorithms and architectures
Cooperative diversity in wireless networks: algorithms and architectures
Handbook of Mathematical Functions, With Formulas, Graphs, and Mathematical Tables,
Handbook of Mathematical Functions, With Formulas, Graphs, and Mathematical Tables,
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
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
Capacity limits of MIMO channels
IEEE Journal on Selected Areas in Communications
An opportunistic cooperation scheme and its BER analysis
IEEE Transactions on Wireless Communications
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
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
Opportunistic source/destination cooperation in cooperative diversity networks
IEEE Transactions on Wireless Communications
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
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Cooperation is emerging as a promising technology to combat the wireless fading and enhance the channel capacity. However, cooperative transmission can not be guaranteed to perform better always than direct transmission, since the statistics of both direct and relay channels are varied due to large scale fading. Therefore, we design an opportunistic criterion to automatically determine which transmission mode should be adopted depending on the channel quality from the source to the cooperative relay, as opposed to the deterministic cooperation regardless of relay channel conditions. According to the proposed criterion, we further present two opportunistic cooperation schemes, namely, the SDC (selection diversity combining) -based and the MRC (maximum ratio combining) -based opportunistic cooperation, and develop the closed-form expressions of outage probability for the proposed schemes over Rayleigh fading channels. For the purpose of comparison, we also analyze the outage probability for the known deterministic cooperation and coded cooperation. Numerical results show that our schemes outperform the traditional schemes in terms of outage probability, especially when the relay channel conditions worsen. In addition, we compare the MRC-based opportunistic cooperation with the SDC-based opportunistic cooperation, showing the superiority of the former scheme.