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Signal modulation method and device and server

A signal modulation and server technology, applied in modulation carrier system, modulation type identification, digital transmission system, etc., can solve the problems of complex feature extraction process, low recognition accuracy, and many signal prior knowledge requirements.

Active Publication Date: 2020-10-30
中国兵器科学研究院
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In terms of feature extraction, although a variety of features have been used for identification, they are all manually extracted based on classical signal processing methods. When facing the actual communication environment, there are many requirements for signal prior knowledge, complex feature extraction procedures, and only a single extraction. Features are used for modulation identification and the identification accuracy is not high enough for defects

Method used

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  • Signal modulation method and device and server
  • Signal modulation method and device and server
  • Signal modulation method and device and server

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Embodiment Construction

[0062] In order to make the purpose, technical solution and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0063] It should be noted that the terms "comprising" and "having" and their variants involved in the documents of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product that includes a series of steps or units Or the apparatus is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to the process, method, product or apparatus.

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Abstract

The invention relates to the technical field of communication signal processing and discloses a signal modulation method, device and server. The method comprises steps of obtaining a truncated sequence of a to-be-recognized signal; based on the truncated sequence of the to-be-identified signal, determining probability distribution of modulation modes of the truncated sequence of the to-be-identified signal, the probability distribution being used for representing a probability that the to-be-identified signal belongs to each modulation mode; determining the modulation mode of the to-be-identified signal based on the probability distribution of the modulation mode of the truncated sequence of the to-be-identified signal; and demodulating the signal based on the determined modulation mode. According to the method, identification of a signal modulation mode with low preprocessing requirements and high identification precision can be realized under non-cooperative communication and non-ideal channel conditions, so that resources are more effectively concentrated to perform blocking interference on important signal parameters.

Description

technical field [0001] The present invention relates to the technical field of communication signal processing, in particular to a signal modulation method, device and server. Background technique [0002] Automatic modulation recognition technology is mainly used in radio spectrum resource detection and management, signal confirmation and interference identification. The radio management department achieves the purpose of monitoring the sound signal and locating the illegal interference source by measuring the characteristic parameters such as the transmission frequency, bandwidth and frequency error of the signal, and uses the relevant characteristics of the radio spectrum to improve the ability to determine the modulation characteristics of the signal. Data information and detection database to distinguish users of different natures, prevent unauthorized users from using spectrum sources, and ensure normal communication of legitimate users. Modulation identification is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/00
CPCH04L27/0012
Inventor 刘冰左伟庆李军冯阳张焱陈科陈诗瑶田建辉江金寿王晓悦何圣华叶金华
Owner 中国兵器科学研究院
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