NDLI: Improvement in the performance of mobile/hidden secondary users in multi-user CRN

Content Provider	IET Digital Library
Author	Khedkar, Rakhi A. Patil, Rajendrakumar A.
Abstract	In a multi-user cognitive radio network (CRN), mobile or hidden secondary users (SUs) are present. Conventionally, such SUs utilize rigid threshold value (λ) for spectrum sensing (SS). When these SUs perform SS, they receive poor quality signals from primary users. This provokes erratic SS decisions, reduces the involvement of SUs in SS, diminishes the probability of detection (P d) and raises miss detection (P m) or false alarm of SUs. As a consequence of this, SUs are not able to participate in SS and allocation in emergency circumstances. To alleviate these problems, an adaptive λ can be utilized for mobile/hidden SUs during SS. Thus, a two-level λ optimization technique for SS has been proposed using a coalition formation approach to maintain co-operation among SUs. The proposed technique has been validated on Universal Software Radio Peripheral test-bed. Estimation of the probability of error (P e), P d, and P m for mobile/hidden SUs with energy detection SS (EDSS) performed using a fixed λ and the two-level optimized λ. From these estimations, it has been observed that compared to the fixed λ EDSS, P e and P m is reduced remarkably, and P d is enhanced for mobile/hidden SUs using the two-level optimized λ EDSS.
Starting Page	3143
Ending Page	3152
Page Count	10
ISSN	17518628
Volume Number	14
e-ISSN	17518636
Issue Number	Issue 18, Nov (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/14/18
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2019.1274
Journal	IET Communications
Publisher Date	2020-07-15
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Coalition Formation Approach Cognitive Radio Cognitive Radio Network Detection Probability Emergency Circumstances Energy Detection SS Erratic SS Decisions Error Statistics Fixed Time Interval Hidden Secondary User Mobile Secondary User Multiuser CRN Optimisation Optimisation Technique Primary User Probability of Error Radio Link And Equipment Radio Spectrum Management Signal Detection Software Radio Two-level Optimised Λ EDSS Two-level Λ Optimisation Technique Universal Software Radio Peripheral Test-bed
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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