NDLI: Partially observable Markov decision process-based sensing scheduling for decentralised cognitive radio networks with the awareness of channel switching delay and imperfect sensing

Content Provider	IET Digital Library
Author	Hoan, Tran Nhut Khai Koo, Insoo
Abstract	An optimal multi-slot channel sensing schedule is proposed in this study that considers an opportunistic spectrum access with the awareness of channel switching delay and imperfect sensing. A practical case is considered where channel availability statistics are usually correlated in time slots and in frequency channels. The switching delays between channels, hardware constraints, and collision with other cognitive users are considered to find an optimal sensing order of the channels that maximises throughput of cognitive user. The optimal sensing order is obtained using the partially observable Markov decision process framework. Throughput of cognitive user, with and without channel sensing errors, is analytically derived and for each case an algorithm is developed. The proposed scheme mitigates the effect of channel sensing errors on the throughput. Performance of the proposed scheme is evaluated through simulations by comparing it with the existing schemes in the literature.
Starting Page	651
Ending Page	660
Page Count	10
ISSN	17518628
Volume Number	10
e-ISSN	17518636
Issue Number	Issue 6, Apr (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/10/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2014.1260
Journal	IET Communications
Publisher Date	2016-04-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Channel Availability Statistics Channel Switching Delay Awareness Cognitive Radio Cognitive User Communication Switching Decentralised Cognitive Radio Network Decision Theory Frequency Channel Game Theory Hardware Constraint Imperfect Sensing Markov Processes Opportunistic Spectrum Access Optimal Multislot Channel Sensing Schedule Optimisation Optimisation Technique Partially Observable Markov Decision Process Radio Link And Equipment Radio Network Radio Spectrum Management Telecommunication Switching Throughput Maximisation Wireless Channel
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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