Research Article
Cooperative Spectrum-Sharing with Two-Way AF Relaying in the Presence of Direct Communications
@ARTICLE{10.4108/eai.27-6-2018.154836, author={Tu Lam Thanh and Tiep M. Hoang}, title={Cooperative Spectrum-Sharing with Two-Way AF Relaying in the Presence of Direct Communications}, journal={EAI Endorsed Transactions on Industrial Networks and Intelligent Systems}, volume={5}, number={14}, publisher={EAI}, journal_a={INIS}, year={2018}, month={6}, keywords={Cooperative Spectrum, AF Relaying, Two-way}, doi={10.4108/eai.27-6-2018.154836} }- Tu Lam Thanh
Tiep M. Hoang
Year: 2018
Cooperative Spectrum-Sharing with Two-Way AF Relaying in the Presence of Direct Communications
INIS
EAI
DOI: 10.4108/eai.27-6-2018.154836
Abstract
In this paper, we investigate a three-phase two-way (TW) amplify-and-forward (AF) relaying for cognitive radio networks. By utilizing the direct communications, the end user can employ diversity combining techniques, i.e., maximal ratio combining (MRC) and selection combining (SC), to achieve the full diversity. We derive the closed-form and asymptotic expressions for user and system outage probabilities which allows us to highlight the advantage of cooperative cognitive communications. The numerical results, obtained through compact forms of these outage probabilities, yield that the cognitive TW AF relaying scheme can significantly enhance the reliability of unlicensed networks in which the transmit power at secondary users is strictly governed.
Copyright © 2018 Tu Lam Thanh and Tiep M. Hoang, licensed to EAI. This is an open access article distributed under the terms of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/), which permits unlimited use, distribution and reproduction in any medium so long as the original work is properly cited.