Autonomous sensing order selection strategies exploiting channel access information
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The document presents an efficient sensing order selection strategy for autonomous cognitive radios (CRs) in a distributed network, focusing on reducing collisions during spectrum sensing. It introduces an adaptive persistent strategy that improves over random selection methods, enabling CRs to converge to collision-free sensing orders when the number of CRs does not exceed the number of channels. Additionally, this approach minimizes the expected time to achieve collision-free orders compared to strategies that randomize after collisions.
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Autonomous sensing order selection strategies exploiting channel access information
- 1. AUTONOMOUS SENSING ORDER SELECTION STRATEGIES EXPLOITING CHANNEL ACCESS INFORMATION ABSTRACT: We design an efficient sensing order selection strategy for a distributed cognitive radio (CR) network, where two or more autonomous CRs sense the channels sequentially (in some sensing order) for spectrum opportunities. We are particularly interested in the case where CRs with false alarms autonomously select the sensing orders in which they visit channels, without coordination from a centralized entity. We propose an adaptive persistent sensing order selection strategy and show that this strategy converges and reduces the likelihood of collisions among the autonomous CRs as compared to a random selection of sensing orders. We also show that, when the number of CRs is less than or equal to the number of channels, the proposed strategy enables the CRs to converge to collision- free channel sensing orders. The proposed adaptive persistent strategy also reduces the expected time of arrival at collision- free sensing orders as compared to the randomize after every collision strategy, in which a CR, upon colliding, randomly selects a new sensing order. ECWAY TECHNOLOGIES IEEE PROJECTS & SOFTWARE DEVELOPMENTS OUR OFFICES @ CHENNAI / TRICHY / KARUR / ERODE / MADURAI / SALEM / COIMBATORE CELL: +91 98949 17187, +91 875487 2111 / 3111 / 4111 / 5111 / 6111 VISIT: www.ecwayprojects.com MAIL TO: ecwaytechnologies@gmail.com