Detection of unknown signals in cognitive radio networks

DOI: 10.31673/2412-9070.2020.061116

Abstract

This work is devoted to detection of unoccupied frequency channels in the cognitive radio networks. An overview of the basic methods of detection of the primary users of the radio resource is given. An algorithms of detection of unknown signals when monitoring the radio spectrum is proposed. The objective of this work is the research of algorithms for detecting unknown signals during radio monitoring in cognitive radio networks. There is the research of algorithms of detection of unknown signal which was performed by the method of statistical tests. Quality indicators of detecting of unknown signals were researched. The algorithms of detection of signals in cognitive radio networks were considered. The proposed algorithms must increase the efficiency of detection of free frequency channels. Estimations of quality indicators of detection of unknown signals were obtained by computer research. For example, there is the dependence of the probability of correct detection on the signal-to-noise ratio for different decision rules.

Keywords: radio spectrum; radio monitoring; cognitive radio; methods of detecting of signals; unknown signals.

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