Abstract
In this letter, we propose a cooperative spectrum sharing protocol, where both primary users (PUs) and secondary users (SUs) achieve bidirectional transmission. In particular, the SUs help PUs to achieve their bidirectional target rates through orthogonal frequency division multiplexing two-way relaying. In return, the PUs allow SUs to communicate bidirectionally on a subset of subcarriers. Subcarrier and power allocation are jointly optimized for both directions to maximize the SU data rate, given that the PUs’ target rate is satisfied. Simulation results demonstrate a significant enhancement in spectrum efficiency compared with several benchmark schemes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
