NDLI: Sensing-throughput optimisation for multichannel cooperative spectrum sensing with imperfect reporting channels

Content Provider	IET Digital Library
Author	Firouzabadi, Abbas Dehghani Rabiei, Amir Masoud
Abstract	The problem of multiband cooperative spectrum sensing with imperfect reporting channels is considered. It is assumed that the secondary users (SUs) make use of an energy detection scheme to sense a number of frequency subbands (assigned to primary users) and report their sensing results to a fusion centre through noisy channels. Exact expressions for the opportunistic throughput, false alarm and missed detection probabilities are derived in terms of the overall sensing-plus-reporting time, sensing subintervals, reporting subintervals and decision thresholds for each SU in each subband. Then, an optimisation problem is formulated that aims to maximise the opportunistic throughput of the cognitive radio network so as to maintain the interference incident on the primary network below a given level. The constraints of the optimisation problem are shown to be non-convex and the conditions under which these constraints become convex are examined. It is also shown that the objective function of the problem is non-convex and two suboptimal techniques are introduced to effectively solve the problem using the algorithms developed for solving convex optimisation problems.
Starting Page	2188
Ending Page	2196
Page Count	9
ISSN	17518628
Volume Number	9
e-ISSN	17518636
Issue Number	Issue 18, Dec (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/9/18
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2015.0097
Journal	IET Communications
Publisher Date	2015-12-17
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Cognitive Radio Cognitive Radio Network Concave Programming Convex Optimisation Problem Cooperative Communication Decision Threshold Energy Detection Scheme False Alarm Frequency Subband Fusion Centre Imperfect Reporting Channel Missed Detection Probability Multiband Cooperative Spectrum Sensing Noisy Channel Nonconvex Optimisation Problem Opportunistic Throughput Maximisation Optimisation Technique Primary Network Probability Radio Link And Equipment Radio Spectrum Management Secondary User Sensing Plus Reporting Time Sensing Subinterval Sensor Fusion Signal Detection Statistics Suboptimal Technique Wireless Channel
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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