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

Ahmad M. Alsharoa, Faouzi Bader, Mohamed-Slim Alouini

Research output: Contribution to journalArticlepeer-review

48 Scopus citations


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.
Original languageEnglish (US)
Pages (from-to)427-430
Number of pages4
JournalIEEE Wireless Communications Letters
Issue number4
StatePublished - Aug 2013

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)


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