Relay Selection and Resource Allocation for Two-Way DF-AF Cognitive Radio Networks
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 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.
Recommended Citation
A. Alsharoa et al., "Relay Selection and Resource Allocation for Two-Way DF-AF Cognitive Radio Networks," IEEE Wireless Communications Letters, vol. 2, no. 4, pp. 427 - 430, Institute of Electrical and Electronics Engineers (IEEE), Aug 2013.
The definitive version is available at https://doi.org/10.1109/WCL.2013.051513.130211
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
Cognitive radio networks; genetic algorithm; two-way relaying
International Standard Serial Number (ISSN)
2162-2337; 2162-2345
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2013 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
Publication Date
01 Aug 2013
