Communication signal system identification system and method
A communication signal and identification system technology, which is applied in the field of communication signal system identification system, can solve the problems of multiple prior knowledge, low signal recognition rate, large amount of calculation, etc., and achieve the effect of reliable communication, multiple types of identification, and realization of communication
Inactive Publication Date: 2018-09-11
CHANGCHUN UNIV OF SCI & TECH
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[0008] In view of the above problems, the purpose of the present invention is to provide a communication signal system identification system and method to solve the problems of low signal identification rate, large amount of calculation, and need for more prior knowledge in existing signal identification methods
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[0031] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that these embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
[0032] Aiming at the problems of large amount of calculation and low recognition rate in the identification process of the above-mentioned communication signal standard, the present invention provides a communication signal standard identification system and method, which detects the amplitude of the communication signal in real time by using the FIR filter on the FPGA hardware platform , frequency and phase changes, and classify communication signals by setting appropriate thresholds on the classification and identification unit, so as to realize rapid ident...
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The present invention provides a communication signal standard identification system and method, wherein the system includes: a signal receiving antenna for receiving communication signals; a signal processing module for filtering, amplifying and frequency conversion processing on the communication signals received by the signal receiving antenna ; Among them, the communication signal becomes an intermediate frequency signal after being processed by the signal processing module; the analog-to-digital conversion module is used to filter and digitize the intermediate frequency signal, and output the corresponding digital quantity; the FPGA standard identification module is used to convert the digital quantity to wavelet transform processing, and compare the variance feature obtained after the wavelet transform processing with the preset threshold value, and classify and identify the communication signal according to the comparison result. Utilizing the invention, under the condition that the signal-to-noise ratio is low and without any prior knowledge, common communication signals can be identified efficiently, and the identification types are many and the reliability is high.
Description
technical field [0001] The present invention relates to the technical field of non-cooperative communication signal standard identification, and more specifically, to a communication signal standard identification system and method. Background technique [0002] The purpose of communication is to transmit information quickly, efficiently, safely and accurately through channels. In order to make full use of the channel capacity, extend the transmission distance of the signal, reduce the interference of various noises, and meet the different needs of users, the transmitted signals are transmitted on different channels with different modulation systems. With the rapid development of electronic technology and the continuous improvement of users' requirements for information transmission, the modulation system of communication signals has experienced a development process from analog to digital, from simple to complex. [0003] In satellite non-cooperative communication, the rec...
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IPC IPC(8): H04L27/00
CPCH04L27/0012
Inventor 李兴广陈磊刘云清陈殿仁金黎黎
Owner CHANGCHUN UNIV OF SCI & TECH