A novel interference modeling scheme in cognitive networks

作者：Li, Jian^*; Li, Sheng hong

来源：Journal of Shanghai Jiaotong University (Science), 2015, 20(5): 540-547.

DOI：10.1007/s12204-015-1661-4

• Cognitive network
• Cumulative distribution function
• Interference modeling
• Number of factors
• Probability density pdf)
• Spatial structure
• Spectrum sensing
• Two dimensional spaces

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 PDF), cumulative distribution 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.

• 出版日期2015
• 单位上海交通大学