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Improved Spectrum Sensing Technique using Multiple Energy Detectors for Cognitive Radio Networks

by Ashish Bagwari, Geetam Singh Tomar
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 62 - Number 4
Year of Publication: 2013
Authors: Ashish Bagwari, Geetam Singh Tomar
10.5120/10067-4666

Ashish Bagwari, Geetam Singh Tomar . Improved Spectrum Sensing Technique using Multiple Energy Detectors for Cognitive Radio Networks. International Journal of Computer Applications. 62, 4 ( January 2013), 11-21. DOI=10.5120/10067-4666

@article{ 10.5120/10067-4666,
author = { Ashish Bagwari, Geetam Singh Tomar },
title = { Improved Spectrum Sensing Technique using Multiple Energy Detectors for Cognitive Radio Networks },
journal = { International Journal of Computer Applications },
issue_date = { January 2013 },
volume = { 62 },
number = { 4 },
month = { January },
year = { 2013 },
issn = { 0975-8887 },
pages = { 11-21 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume62/number4/10067-4666/ },
doi = { 10.5120/10067-4666 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T21:10:46.255463+05:30
%A Ashish Bagwari
%A Geetam Singh Tomar
%T Improved Spectrum Sensing Technique using Multiple Energy Detectors for Cognitive Radio Networks
%J International Journal of Computer Applications
%@ 0975-8887
%V 62
%N 4
%P 11-21
%D 2013
%I Foundation of Computer Science (FCS), NY, USA
Abstract

Cognitive radio is an enabling technology to solve the spectrum scarcity problem in wireless communication. This is based on the concept of opportunistic spectrum access. Spectrum sensing is one of the most important functions in cognitive radio (CR) implementation. In this paper, we propose a multiple energy detectors (MED) based scheme with improved detection performance at low signal to noise ratio (SNR). We consider a framework of CR networks in which each CR node is equipped with MEDs and each energy detector with single antenna. An analytical model is developed for performance evaluation in terms of probability of false alarm Pf, and probability of detection Pd. Numerical results obtained in Rayleigh fading channel show that the proposed scheme performs better as compared to conventional energy detector (ED). The proposed scheme is further extended for cooperative detection, which further yield better detection performance. Optimal number of CR users involved in cooperative spectrum sensing is also investigated to reduce overheads and system complexity.

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Index Terms

Computer Science
Information Sciences

Keywords

Spectrum Sensing MED Cooperative Spectrum Sensing ED CR

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