NDLI: Cooperative spectrum sensing study using Welch periodogram

Content Provider	IEEE Xplore Digital Library
Author	Hekkala, A. Harjula, I. Panaitopol, D. Rautio, T. Pacalet, R.
Copyright Year	2011
Description	Author affiliation: Telecom ParisTech, 46 rue Barrault, 75013 Paris, France (Pacalet, R.) \|\| VTT Technical Research Centre of Finland, P.O. Box 1100, FI-90571 Oulu, Finland (Hekkala, A.; Harjula, I.; Rautio, T.) \|\| NEC Technologies (UK), 10 Rue Godefroy, 92821 Puteaux, France (Panaitopol, D.)
Abstract	Spectrum sensing is one of the crucial tasks for enabling the use of the cognitive radios. In this paper, we study cooperative spectrum sensing using the Welch periodogram in different fading channel environments. We consider the performance of the Welch periodogram using receiver operating characteristic curves for single- and multicarrier signals. In the cooperative sensing, we study how the number of the cooperative users affects the selection of the reasonable combining rules. In addition, we present the idea of the simultaneous sensing of several sub bands. Finally, we discuss the implementation aspects of the Welch periodogram. In particular, we study the complexity reduction by shortening the length of Fast Fourier Transform (FFT) used in the Welch periodogram. Our theoretical and simulation results indicate that the parameters for the Welch periodogram should be carefully selected to achieve the best performance. In addition, by using smaller FFT sizes, we are able to reduce the complexity of the Welch periodogram without any degradation on the performance. We show that its practical implementation is possible with any existing baseband processor. Finally, we show that the sensing performance can be significantly improved by increasing the number of the cooperative users at the cost of the signalling overhead over the network.
Starting Page	67
Ending Page	74
File Size	324506
Page Count	8
File Format	PDF
ISBN	9781612841694
e-ISBN	9789531841528
e-ISBN	9783851251616
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-15
Publisher Place	Austria
Access Restriction	Subscribed
Rights Holder	Univ of Zagreb, Graz Univ
Subject Keyword	Sensors OFDM Phase shift keying Noise Channel models Bandwidth Complexity theory Winner II channel model Hard decisions Soft decisions
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
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@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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