NDLI: Utility-based opportunistic spectrum access for cognitive radio sensor networks: joint spectrum sensing and random access control

Content Provider	IET Digital Library
Author	Zheng, Meng Liang, Wei Yu, Haibin Sharif, Hamid
Abstract	This study formulates a novel optimisation problem for joint spectrum sensing and random access control (JS 2 RAC) in cognitive radio sensor networks (CRSNs). The JS 2 RAC is formulated as a network utility maximisation problem, which aims to maximise the sum of utilities over all links in the network but subject to the primary user protection constraint, the energy constraint, and the physical constraint. Due to the non-separable and non-convex nature of the JS 2 RAC problem, the authors propose a primal-decomposition-based iterative (PDI) algorithm which decomposes the JS 2 RAC problem into a spectrum sensing subproblem and a random access control subproblem, and solve the two subproblems iteratively. Then, the authors prove the convergence of the PDI algorithm and show its distributed implementation in practice. Simulations demonstrate the fast convergence and the near-optimal nature of the PDI algorithm and show its significant improvement in the network utility of CRSNs in comparison with the method of optimising spectrum sensing and random access separately.
Starting Page	1044
Ending Page	1052
Page Count	9
ISSN	17518628
Volume Number	10
e-ISSN	17518636
Issue Number	Issue 9, Jun (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/10/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2015.0675
Journal	IET Communications
Publisher Date	2016-06-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Cognitive Radio Cognitive Radio Sensor Network Energy Constraint Joint Spectrum Sensing And Random Access Control Maximisation Problem Optimisation Optimisation Problem Optimisation Technique PDI Algorithm Physical Constraint Primal-decomposition-based Iterative Algorithm Radio Access Network Radio Access System Spread Spectrum Communication Utility-based Opportunistic Spectrum Access Wireless Sensor Network
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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