Relay selection and resource allocation for two-way DF-AF cognitive radio networks

In this letter, the problem of relay selection and optimal resource allocation for two-way relaying cognitive radio networks using half duplex amplify-and-forward and decode-and-forward protocols is investigated. The primary and secondary users are assumed to access the spectrum simultaneously, in a way that the interference introduced to the primary users should be below a certain tolerated limit. Dual decomposition and subgradient methods are used to find the optimal power allocation. A suboptimal approach based on a genetic algorithm is also presented. Simulation results show that the proposed suboptimal algorithm offers a performance close to the optimal performance with a considerable complexity saving. © 2013 IEEE.

Alsharoa, A., Bader, F., & Alouini, M.-S. (2013). Relay Selection and Resource Allocation for Two-Way DF-AF Cognitive Radio Networks. IEEE Wireless Communications Letters, 2(4), 427–430. doi:10.1109/wcl.2013.051513.130211

Institute of Electrical and Electronics Engineers (IEEE)

IEEE Wireless Communications Letters



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