NDLI: Bayesian approach to spectrum sensing for cognitive radio applications

Content Provider	IEEE Xplore Digital Library
Author	Gokceoglu, A. Piche, R. Valkama, M.
Copyright Year	2012
Description	Author affiliation: Dept. of Math., Tampere Univ. of Technol., Tampere, Finland (Piche, R.) \|\| Dept. of Commun. Eng., Tampere Univ. of Technol., Tampere, Finland (Gokceoglu, A.; Valkama, M.)
Abstract	In this paper, we address the spectrum sensing task of cognitive radio from Bayesian detection (BD) perspective. We first show that BD essentially simplifies to classical energy detection (ED) under Gaussian signal assumption but the threshold setting has more degrees of freedom to optimize the sensing performance, e.g., against given spectrum utilization. Then we propose a novel BD based algorithm where the sample energy is calculated iteratively, and the odds ratio is used to quantify the measurement reliability. Depending on the reliability, either a hard decision is forced or the algorithm progresses to accumulate more sample energy. When working under unknown SNRs, this allows the detector to reach reliable sensing decisions by using adaptive sample window, thus providing advantage over classical ED where fixed threshold is used regardless of channel conditions. Extensive computer simulations are provided to illustrate the performance advantages against classical ED in terms of e.g. sensing time.
Starting Page	1
Ending Page	6
File Size	564970
Page Count	6
File Format	PDF
ISBN	9781467329767
ISSN	21665419
e-ISBN	9781936968558
DOI	10.4108/icst.crowncom.2012.248512
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-18
Publisher Place	Sweden
Access Restriction	Subscribed
Rights Holder	ICST
Subject Keyword	Detectors Bayes methods Reliability Cognitive radio Signal to noise ratio
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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