Abstract
In cognitive radio networks, secondary users (SUs) opportunistically utilize the spectrum without harmful interruption to the primary users (PUs). In this article, the overlay medium access control (MAC) scheme is considered in which SU uses the spectrum portion which is not utilized by PU. The imperfect sensing is considered at SU network (SUN) to detect PU's transmission. In the SUN, carrier sense multiple access protocol with contention window (CW) is used to minimize the collisions between SUs and PUs. Multichannel decentralized MAC protocol is investigated to analyse the throughput and examine the impact of various arrival rates of PUs (opportunities) and SUs, number of SUs, number of channels, and CWs. Numerical results verify various events and demonstrate the performance of the proposed MAC protocol under imperfect sensing conditions.
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.
