Cart (Loading....) | Create Account
Close category search window
 

Cooperative wideband spectrum sensing for cognitive radio networks in fading channels

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Derakhtian, M. ; Dept. of Electr. & Comput. Eng., Shiraz Univ., Shiraz, Iran ; Izedi, F. ; Sheikhi, A. ; Neinavaie, M.

Spectrum sensing is an essential capability that allows the cognitive radios (CRs) to detect spectral holes and opportunistically use underutilised frequency bands without causing deleterious interference to primary users. In this study the authors address two cooperative wideband spectrum sensing techniques for the frequency-selective and frequency-non-selective fading channels in which the primary user signals are detected over multiple frequency bands. The primary user signals, indices and the number of occupied subbands, the channels characteristics and the noise variance of the secondary receivers (SRs) are considered to be unknown. Thus, the problem of spectrum sensing in the fusion centre is modelled by a composite testing hypothesis in time domain and using generalised likelihood ratio (GLR) test the spectral holes are detected. In the frequency-selective case the authors have decreased the computational complexity using some approximations. Simulation results show that the proposed spectrum sensing schemes achieve satisfactory performance and also are robust against the SRs arrangement in the CR network.

Published in:

Signal Processing, IET  (Volume:6 ,  Issue: 3 )

Date of Publication:

May 2012

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.