In this paper, we propose a mathematical model of aggregate co-channel interference over Rayleigh
fading in cognitive networks. Unlike the statistical models in the literature that aim at finding the bound or
approximation of the interference, the proposed model gives an accurate expression of probability density function
(PDF), cumulative distribution function (CDF) and mean and variance of the interference, which takes into
account a number of factors, such as spectrum sensing scheme, and spatial distribution of the secondary users
(SUs). In particular, we focus on a more general spatial structure where there are two roles of primary users (PUs)
and the interfering SUs distributed in the two-dimensional space. The framework developed in this paper is easy
to be applied in power control, error evaluation and other applications.
LI Jian1,2* (李 剑), LI Sheng-hong1 (李生红)
. A Novel Interference Modeling Scheme in Cognitive Networks[J]. Journal of Shanghai Jiaotong University(Science), 2015
, 20(5)
: 540
-547
.
DOI: 10.1007/s12204-015-1661-4
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