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Aggregate Interference Analysis for Underlay Cognitive Radio Networks

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2 Author(s)
Kusaladharma, S. ; Dept. of Electr. & Comput. Eng., Univ. of Alberta, Edmonton, AB, Canada ; Tellambura, C.

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.

Published in:

Wireless Communications Letters, IEEE  (Volume:1 ,  Issue: 6 )