A digital modulation mode automatic identification platform and method based on usrp platform

Abstract

The present invention discloses a platform and a method for automatically identifying a digital modulation mode based on a USRP platform, belonging to the technical field of wireless communication. The platform comprises a digital signal generation and modulation module, a transmitting module, a receiving module, a characteristic parameter extraction module, and an identification and classification module; wherein the digital signal generation and modulation module generates an intermediate-frequency digital signal to be identified; the transmitting module converts the generated intermediate-frequency digital signal to a radio frequency band through up-conversion and transmits the converted digital signal; the receiving module performs sampling to obtain a digital sampling signal; the characteristic parameter extraction module performs calculation to obtain each characteristic parameter; and the identification and classification module judges a modulation mode of an input signal to obtain information of the modulation mode. According to the platform and the method provided by the present invention, a characteristic parameter extraction portion is low in complexity and quick in computing speed; a multi-class problem is solved through a one-to-one strategy, thus identification accuracy remains stable in the case of low signal to noise ratio; both transmission and reception of the digital signal are achieved on the USRP platform, which is closer to the actual environment, and high effectiveness of the platform is also verified.

Description

technical field [0001] The present invention relates to a digital modulation mode automatic identification platform and method based on a USRP (Universal Software Radio Peripheral, Universal Software Radio Peripheral) platform, in particular to spectrum monitoring, software radio and cognitive radio in a digital communication system on the USRP platform The realized automatic identification method of digital modulation mode, the platform can quickly and accurately identify the modulation mode of signals in a digital communication system in the environment of low signal-to-noise ratio, and belongs to the technical field of wireless communication. Background technique [0002] With the rapid development of modern communication technology, the space communication environment is becoming more and more complex, and the identification of modulation modes in digital communication systems has attracted more and more attention. In the military, the identification of the modulation mo...

AI Technical Summary

Problems solved by technology

Some current automatic identification methods for digital modulation methods have shortcomings in terms of computational complexity, time complexity, and identification efficiency under low signal-to-noise ratio conditions. In addition, there is a lack of effective platform support for algorithm performance simulation and analysis.

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