NDLI: Cyclostationary spectrum sensing under four-level hypothesis for spectrum sharing

Content Provider	IEEE Xplore Digital Library
Author	Umebayashi, K. Lehtomaki, J.J. Hatakeyama, S. Suzuki, Y.
Copyright Year	2011
Description	Author affiliation: University of Agriculture and Technology, 2-24-16, Nakacho, Koganei-shi, Tokyo, 184-8588, Japan (Umebayashi, K.; Suzuki, Y.) \|\| Centre for Wireless Communications, University of Oulu, P. O. BOX 4500 FIN-90014 University of Oulu, Finland (Lehtomaki, J.J.) \|\| Tohoku Electric Power Co., Inc., Japan (Hatakeyama, S.)
Abstract	This paper presents a new multiple hypothesis problem for spectrum sharing between primary users (PUs) and secondary users (SUs) with cognitive radio technique. The considered four hypotheses are as follows; the studied frequency band is vacant (hypothesis H), the studied frequency band is occupied only by a PU (hypothesis H), the studied frequency band is occupied only by another SU (hypothesis H) and the studied frequency band is occupied by PU and another SU simultaneously (hypothesis H). Most of the related works have considered the binary hypothesis testing problem (H and H). By applying the multiple hypothesis testing problem, we can enhance the protection of the PU but also fairness among multiple SUs. To avoid difficulties in forming decision regions in the multiple hypothesis problem, a framework where two binary hypothesis tests are combined to form the final decision is introduced. The problem in implementing this framework is that a SU signal can cause interference to the binary hypothesis test for the PU signal (and vice versa), so that we may falsely detect presence of a PU even when only a SU is present. To reduce the leakage due to interference, we propose an implementation using cyclostationary based detection. However, under H, the correlation between the PU and SU signals is difficult to avoid. We theoretically analyze the correlation under H and show its impact on the detection performances.
Starting Page	2338
Ending Page	2343
File Size	746164
Page Count	6
File Format	PDF
ISBN	9781457713460
e-ISBN	9781457713484
e-ISBN	9781457713477
DOI	10.1109/PIMRC.2011.6139938
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-09-11
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Detectors Correlation Signal detection Signal to noise ratio Probability Interference
Content Type	Text
Resource Type	Article

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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
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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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