DocumentCode :
740839
Title :
On the Approximate Analysis of Energy Detection Over 
Rayleigh Fading Channels Through Cooperative Spectrum Sensing
Author :
Alghorani, Yahia ; Kaddoum, Georges ; Muhaidat, Sami ; Pierre, Samuel
Author_Institution :
Dept. of Comput. Eng., Ecole Polytech. de Montreal, Montreal, QC, Canada
Volume :
4
Issue :
4
fYear :
2015
Firstpage :
413
Lastpage :
416
Abstract :
In this letter, we consider the problem of energy detection of unknown signals in an intervehicular communication (IVC) system over n*Rayleigh fading channels (also known as cascaded Rayleigh) . Novel tight approximations for the probability of detection are derived for the no-diversity and the maximum ratio combining (MRC)) diversity schemes. Moreover, we investigate the system performance when cooperative spectrum sensing (CSS) is considered with and without imperfect reporting channels. The analytical results show that the detection reliability is decreased as the fading severity parameter n increases but reliability is substantially improved when CSS employs MRC schemes.
Keywords :
Rayleigh channels; cognitive radio; cooperative communication; radio spectrum management; vehicular ad hoc networks; Rayleigh fading channels; cooperative spectrum sensing; energy detection; intervehicular communication system; maximum ratio combining diversity schemes; Approximation methods; Cascading style sheets; Diversity reception; Fading; Probability density function; Sensors; Signal to noise ratio; $n^ast$Rayleigh fading channels; Cognitive radio; cooperative spectrum sensing; diversity schemes; energy detection; n*Rayleigh fading channels;
fLanguage :
English
Journal_Title :
Wireless Communications Letters, IEEE
Publisher :
ieee
ISSN :
2162-2337
Type :
jour
DOI :
10.1109/LWC.2015.2427283
Filename :
7096940
Link To Document :
