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A signal modulation method, device and server

A technology of signal modulation and modulation mode, which is applied in the direction of modulated carrier system, modulation type identification, digital transmission system, etc. It can solve the problems of signal prior knowledge requirements, complex feature extraction process, and insufficient recognition accuracy, and achieve high recognition Accuracy, effective blocking interference, effect of low preprocessing requirements

Active Publication Date: 2021-08-06
中国兵器科学研究院
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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

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  • A signal modulation method, device and server
  • A signal modulation method, device and server
  • A signal modulation method, 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 present invention relates to the technical field of communication signal processing, and discloses a signal modulation method, device and server. The signal modulation method includes: obtaining a truncated sequence of a signal to be identified; based on the truncated sequence of the signal to be identified, determining The probability distribution of the modulation mode of the truncated sequence of the signal to be identified, the probability distribution is used to characterize the probability that the signal to be identified belongs to each modulation mode; the probability based on the modulation mode of the truncated sequence of the signal to be identified distribution, determining the modulation mode of the signal to be identified; demodulating the signal based on the determined modulation mode. This method can realize the identification of signal modulation modes with low preprocessing requirements and high identification accuracy under non-cooperative communication and non-ideal channel conditions, so as to more effectively concentrate resources on important signal parameters for blocking interference.

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 Patents(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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