Decode-and-Forward Buffer-Aided Relay Selection in Cognitive Relay Networks
Open Access
- 11 March 2014
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Vehicular Technology
- Vol. 63 (9), 4723-4728
- https://doi.org/10.1109/tvt.2014.2311301
Abstract
This paper investigates decode-and-forward (DF) buffer-aided relay selection for underlay cognitive relay networks (CRNs) in the presence of both primary transmitter and receiver. We propose a novel buffer-aided relay selection scheme for the CRN, where the best relay is selected with the highest signal-to-interference ratio (SIR) among all available source-to-relay and relay-to-destination links while keeping the interference to the primary destination within a certain level. A new closed-form expression for the outage probability of the proposed relay selection scheme is obtained. Both simulation and theoretical results are shown to confirm performance advantage over the conventional max-min relay selection scheme, making the proposed scheme attractive for CRNs.Keywords
This publication has 15 references indexed in Scilit:
- Study of Relay Selection in a Multi-Cell Cognitive NetworkIEEE Wireless Communications Letters, 2013
- Space full-duplex max-max relay selection for relays with buffersPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2012
- Exact Outage Performance of Cognitive Relay Networks with Maximum Transmit Power LimitsIEEE Communications Letters, 2011
- On the Cooperative Diversity Gain in Underlay Cognitive Radio SystemsIEEE Transactions on Communications, 2011
- Performance Analysis of Two-Way Amplify and Forward Relaying with Adaptive Modulation over Multiple Relay NetworkIEEE Transactions on Communications, 2010
- Outage performance of relay-assisted cognitive-radio system under spectrum-sharing constraintsElectronics Letters, 2010
- Little's LawPublished by Springer Science and Business Media LLC ,2008
- Power Control in Cognitive Radio Systems Based on Spectrum Sensing Side InformationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2007
- Fundamental limits of spectrum-sharing in fading environmentsIEEE Transactions on Wireless Communications, 2007
- Nonnegative Matrices in the Mathematical SciencesPublished by Society for Industrial & Applied Mathematics (SIAM) ,1994