A Centralized PSD Map Construction by Distributed Compressive Sensing


Within the context of spectrum reusing in Cognitive Radio (CR) networks, spectrum availability ought to be considered with respect to each area and frequency in creating the ability Spectral Density (PSD) map concept. For this reason, the sensed PSDs by the distributed sensors in the area are collected and fused by a fusion center (FC). But, for a given zone, the sensed PSD by neighbor CR sensors might contain a shared common element for a while, and this component will be exploited in the speculation of the distributed supply coding to compress as a lot of as potential. For this reason, distributed compressive sensing (DCS) ways are used here to exploit the correlation between PSDs and compress them additional and reduce this type of overhead traffic. The proposed method will be used to develop a framework when the holding time of the users is large in comparison with the rate of the spectrum sensing.

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