Abstract
For signal analysis in the management and monitoring of the radio spectrum, it is need to automatically identify the modulated signal. This paper performs clustering algorithm on signal constellation diagram after equalization through AP clustering method, and proposes a clustering method for limited problem of modulation recognition type. After normalizing the shape of the constellation diagram, the size of the constellation diagram, and signal AP clustering, it realizes the matching recognition of the constellation diagram. The simulation results show that the AP clustering has efficient recognition ability.
Highlights
With the rapid development of modern communication technology, in the civil, modulation recognition of communication signals is mainly applied to software radio [1], spectrum monitoring and management, cognitive radio and so on [2,3]
The battlefield information mainly is transmitted by radio, so the communication signal detection has become the important content of electronic warfare, which is an important premise to implement the communication countermeasure [4,5,6]
This paper focuses on the inter-class recognition which is based on constellation diagram modulation type, the premise is: if a digital modulation signal can be only expressed by its constellation diagram, it can be identified by restoring the constellation diagram at the receiver
Summary
With the rapid development of modern communication technology, in the civil, modulation recognition of communication signals is mainly applied to software radio [1], spectrum monitoring and management, cognitive radio and so on [2,3]. According to the modulation type of the received signal and some other measurement parameters, the type of enemy detector will be detected, distinguishing the kind of radar signal and analyzing the threat level, so as to improve the survival ability of the platform. This paper focuses on the inter-class recognition which is based on constellation diagram modulation type, the premise is: if a digital modulation signal can be only expressed by its constellation diagram, it can be identified by restoring the constellation diagram at the receiver
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