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Multichannel CSMA Based MAC Scheme for Unsaturated Cognitive Radio Networks: Performance Study of the Opportunity and Contention Window

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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.

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Authors and Affiliations

  1. Department of ICT, ABV-Indian Institute of Information Technology and Management, Gwalior, India

    Jayanti Rastogi, Lokesh Chouhan & Aditya Trivedi

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  1. Jayanti Rastogi
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  2. Lokesh Chouhan
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  3. Aditya Trivedi
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Correspondence to Lokesh Chouhan.

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Rastogi, J., Chouhan, L. & Trivedi, A. Multichannel CSMA Based MAC Scheme for Unsaturated Cognitive Radio Networks: Performance Study of the Opportunity and Contention Window. Wireless Pers Commun 85, 1279–1294 (2015). https://doi.org/10.1007/s11277-015-2840-1

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  • DOI: https://doi.org/10.1007/s11277-015-2840-1

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