Mutual Information based Spectrum Sensing Method in Cognitive Radio Network and Apparatus thereof

摘要

The present invention relates to a device for recognizing a priority user in a cognitive radio network, comprising: a communication unit for receiving a spectrum of a senior user signal sensed by a next-level user and a spectrum of an unauthorized user signal; And determining whether the priority user is present by comparing the amount of mutual information between the senior user entropy and the unauthorized user calculated from the entropy of the senior user and the unauthorized user calculated above from the entropy of the unauthorized user The presence or absence of a senior user can be recognized by using the mutual information amount of the senior user and the unauthorized user.