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Impact of Control Channel Design on Cooperative Spectrum Sensing in Opportunistic Spectrum Access Networks
BibTeX
@MISC{Petracca_impactof,
author = {Marco Petracca and Franco Mazzenga and Remo Pomposini and Francesco Vatalaro},
title = {Impact of Control Channel Design on Cooperative Spectrum Sensing in Opportunistic Spectrum Access Networks},
year = {}
}
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Abstract
Abstract—In Opportunistic Spectrum Access (OSA) networks, Secondary unlicensed Users (SUs) need a common Control Channel (CC) to identify the spectrum opportunities, i.e., com-mon spectrum holes unused by licensed Primary Users (PUs). Typically, an interference-free CC is unrealistically assumed in the literature. In this paper we evaluate the impact of the availability and the characteristics of the CC on the performance of cooperative spectrum sensing. We deal with the dimensioning of an underlay Ultra-wideband (UWB) signalling network for the exchange of sensing data among secondary Cognitive Radio (CR) nodes avoiding harmful interference to PUs. To this aim, we analyse the trade-off between the connectivity degree of a multi-hop underlay UWB signalling network, directly related to the possibility to perform cooperative sensing, and its coexistence with PUs. It is observed that the correct dimensioning of the UWB signalling network allows to achieve high accuracy of PU detection without compromising primary systems.
Keyphrases
opportunistic spectrum access network cooperative spectrum sensing control channel design underlay ultra-wideband high accuracy licensed primary user com-mon spectrum hole opportunistic spectrum access connectivity degree correct dimensioning spectrum opportunity cooperative sensing secondary cognitive radio cooperative spectrum common control channel multi-hop underlay uwb signalling network primary system uwb signalling network pu detection harmful interference interference-free cc
