Aggregate Interference Analysis for Underlay Cognitive Radio Networks

Author

Kusaladharma, Sachitha ; Tellambura, Chintha

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Alberta, Edmonton, AB, Canada

Volume

1

Issue

6

fYear

2012

fDate

12/1/2012 12:00:00 AM

Firstpage

641

Lastpage

644

Abstract

This paper investigates the aggregate interference on a primary user caused by a random number of cognitive radio transmitters distributed in a finite ring. A composite model involving path loss, Rayleigh fading, and shadowing is considered. The exact closed-form moment generating function and an accurate approximation are derived. The aggregate interference is shown to be accurately approximated by a Gamma distribution. The exact outage and an asymptotic approximation are derived.

Keywords

Rayleigh channels; approximation theory; cognitive radio; gamma distribution; radio networks; radio transmitters; radiofrequency interference; Rayleigh fading channel; aggregate interference analysis; asymptotic approximation; cognitive radio transmitters; composite model; exact closed-form moment generating function; finite ring; gamma distribution; path loss; shadowing; underlay cognitive radio networks; Aggregates; Approximation methods; Cognitive radio; Fading; Interference; Shadow mapping; Cognitive radio; aggregate interference; outage probability; shadowing;

fLanguage

English

Journal_Title

Wireless Communications Letters, IEEE

Publisher

ieee

ISSN

2162-2337

Type

jour

DOI

10.1109/WCL.2012.091312.120600

Filename

6308772