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ICC
2009
IEEE

Interference and Deployment Issues for Cognitive Radio Systems in Shadowing Environments

11 years 11 months ago
Interference and Deployment Issues for Cognitive Radio Systems in Shadowing Environments
In this paper we describe a model for calculating the aggregate interference encountered by primary receivers in the presence of randomly placed cognitive radios (CRs). We show that incorporating the impact of distance attenuation and lognormal fading on each constituent interferer in the aggregate, leads to a composite interference that cannot be satisfactorily modeled by a lognormal. Using the interference statistics we determine a number of key parameters needed for the deployment of CRs. Examples of these are the exclusion zone radius, needed to protect the primary receiver under different types of fading environments and acceptable interference levels, and the numbers of CRs that can be deployed. We further show that if the CRs have apriori knowledge of the radio environment map (REM), then a much larger number of CRs can be deployed especially in a high density environment. Given REM information, we also look at the CR numbers achieved by two different types of techniques to proc...
Muhammad Fainan Hanif, Mansoor Shafi, Peter J. Smi
Added 18 Feb 2011
Updated 18 Feb 2011
Type Journal
Year 2009
Where ICC
Authors Muhammad Fainan Hanif, Mansoor Shafi, Peter J. Smith, Pawel A. Dmochowski
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