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Modulation mode determination method and device

A modulation mode and determination method technology, applied in the field of modulation mode determination method and device, can solve the problem that the receiving end cannot demodulate to obtain the correct original signal, etc.

Active Publication Date: 2020-06-12
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a method and device for determining a modulation mode, which can improve the accuracy of the modulation mode of the determined modulated signal, and further, to a certain extent, prevent the receiving end from being unable to demodulate to obtain the correct modulation mode in the prior art. The problem with the original signal

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  • Modulation mode determination method and device
  • Modulation mode determination method and device
  • Modulation mode determination method and device

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Embodiment Construction

[0059] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0060] In the prior art, the autocorrelation equation of the modulated signal contains the second-order moment characteristics of the modulated signal, and the modulated signal will be affected by noise during transmission to the receiving end, resulting in a large occurrence of the second-order moment characteristics of the modulated signal Based on the autocorrelation equation of the modulated signal, the cyclic spectrum feature determined based on the second...

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Abstract

The embodiment of the invention provides a modulation mode determination method and device. The method comprises the steps: obtaining cyclic correlation entropy spectral density of a modulated signal;based on cyclic correlation entropy spectral density, determining cyclic correlation entropy spectrum characteristics of the modulated signal; based on cyclic correlation entropy spectrum characteristics and a pre-trained modulation mode prediction network model, determining a modulation mode of the modulated signal; based on the above processing, enabling the cyclic correlation entropy spectrumcharacteristic of the modulated signal to represent the high-order moment characteristic of the modulated signal; due to a fact that the high-order moment characteristic of the modulated signal is notchanged due to the influence of noise, the high-order moment characteristic of the modulated signal can represent the real characteristic of the modulated signal, and the accuracy of the determined modulation mode of the modulated signal is high based on the cyclic correlation entropy spectrum characteristic of the modulated signal, so that the problem that a receiving end cannot demodulate to obtain a correct original signal in the prior art can be avoided to a certain extent.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and a device for determining a modulation mode. Background technique [0002] In a wireless communication system, before sending the original signal, the sending end needs to modulate the original signal through a preset modulation mode to obtain a modulated signal. Then, the transmitter can send the modulated signal to the receiver. After receiving the modulated signal, the receiving end needs to determine the modulation mode of the modulated signal, and then, based on the demodulation mode corresponding to the modulation mode of the modulated signal, demodulate the modulated signal to obtain the original signal sent by the transmitting end. [0003] In the prior art, the process of determining the modulation mode at the receiving end includes the following steps: based on the autocorrelation equation of the modulated signal, determining the cycl...

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Application Information

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IPC IPC(8): H04L27/00G06N3/04
CPCH04L27/0012G06N3/044G06N3/045
Inventor 冯志勇黄赛林春生张奇勋尉志青
Owner BEIJING UNIV OF POSTS & TELECOMM
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