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Method, device and computer equipment for low intermediate frequency carrier detection

A carrier detection and low-IF technology, which is applied in the direction of error detection/prevention using a signal quality detector, which can solve the problems of difficulty in detecting the signal-to-noise ratio of low-IF carriers and low detection efficiency.

Active Publication Date: 2020-07-03
ZHUHAI JIELI TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, the present invention provides a method, device and computer equipment for low-IF carrier detection, which can solve the problems of traditional low-IF carrier signal-to-noise ratio detection difficulty and low detection efficiency

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  • Method, device and computer equipment for low intermediate frequency carrier detection
  • Method, device and computer equipment for low intermediate frequency carrier detection
  • Method, device and computer equipment for low intermediate frequency carrier detection

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Embodiment Construction

[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] Although the steps in the present invention are arranged with labels, they are not used to limit the order of the steps. Unless the order of the steps is clearly stated or the execution of a certain step requires other steps as a basis, the relative order of the steps can be adjusted.

[0020] figure 1 It is a schematic flowchart of a method for low-IF carrier detection of an embodiment; as figure 1 As shown, the method for low-IF carrier detection in this embodiment includes steps:

[0021] S11. Obtain a low-IF carrier waveform of a set length to be detected.

[0022] figure 2 It is a ...

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PUM

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Abstract

The invention relates to a low intermediate frequency carrier wave detection method and apparatus, and a computer device. The low intermediate frequency carrier wave detection method includes the steps: acquiring the waveform of the low intermediate frequency carrier wave to be detected with the preset length; counting the number of zero-crossing points in the waveform of the low intermediate frequency carrier wave, and counting the number of the peak trough points contained in the waveform of the low intermediate frequency carrier wave; and calculating the difference absolute value of the number of the zero-crossing points and the number of the peak trough points, calculating the proportion relation between the difference absolute value and the number of the zero crossing points (or peak trough points), and according to the proportion relation, determining the signal to noise ratio characteristic of the waveform of the low intermediate frequency carrier wave. The low intermediate frequency carrier wave detection method and apparatus can simply and quickly detect the signal to noise ratio characteristic of the low intermediate frequency carrier wave.

Description

technical field [0001] The invention relates to the technical field of digital communication, in particular to a method, device and computer equipment for low-intermediate frequency carrier detection. Background technique [0002] The receiving end of the wireless communication system often uses a down-conversion structure to convert the high-frequency carrier to a lower frequency for processing, so as to simplify the design of subsequent circuits and improve the performance of the entire system. According to the converted frequency, the down conversion structure can be divided into high and medium frequency (the intermediate frequency carrier is relatively high relative to the signal bandwidth, such as the 10.7MHz intermediate frequency commonly used in traditional FM receivers), and low intermediate frequency (the intermediate frequency carrier is relatively similar to the signal bandwidth. For example, use 1MHz intermediate frequency) and zero intermediate frequency (no i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/20
CPCH04L1/20
Inventor 罗广君
Owner ZHUHAI JIELI TECH