Relay Selection and Resource Allocation for Two Way DF-AF Cognitive Radio Network

Abstract : 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 decodeand- 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.
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https://hal-supelec.archives-ouvertes.fr/hal-00934754
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Submitted on : Wednesday, January 22, 2014 - 3:40:26 PM
Last modification on : Friday, November 16, 2018 - 1:37:38 AM

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Ahmad Alsharoa, Carlos Faouzi Bader, Mohamed-Slim Alouini. Relay Selection and Resource Allocation for Two Way DF-AF Cognitive Radio Network. IEEE wireless communications letters, IEEE comsoc, 2013, 2 (4), pp.427 - 430. ⟨10.1109/WCL.2013.051513.130211⟩. ⟨hal-00934754⟩

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