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Silencing control method, device and equipment and readable storage medium

A squelch control and squelch technology, which is applied in the field of communication, can solve the problems of increasing equipment costs, achieve the effects of improving accuracy, simplifying equipment circuits, and increasing judgment conditions

Pending Publication Date: 2022-05-20
HYTERA COMM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, carrier judgment must provide IQ signal components, which requires additional circuit design and increases the cost of equipment.

Method used

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  • Silencing control method, device and equipment and readable storage medium
  • Silencing control method, device and equipment and readable storage medium
  • Silencing control method, device and equipment and readable storage medium

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. 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.

[0028] The transmission of the signal is affected by the channel, which may cause a carrier frequency offset, resulting in performance degradation. Therefore, in the prior art, in order to avoid the influence of carrier offset, after receiving the carrier signal, the receiver firstly performs the carrier synchronization calibration operation, and then processes the calibrated carrier...

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Abstract

The invention discloses a squelch control method and device and a readable storage medium. The method comprises the following steps: receiving a carrier signal, and carrying out frequency mixing on the carrier signal to obtain a frequency mixing signal; acquiring a signal-to-noise ratio of a current channel according to the frequency mixing signal; when the signal-to-noise ratio of the current channel is greater than a preset squelch opening threshold value, detecting whether the frequency mixing signal is a strong signal; and if the frequency mixing signal is a strong signal, starting a silencing function. Through the above mode, the judgment of squelch opening is realized on software, the equipment circuit is simplified, the accuracy of squelch opening is improved, and when the carrier signal frequency deviation exists, carrier synchronization calibration does not need to be carried out.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a squelch control method, device, equipment and a readable storage medium. Background technique [0002] Squelch refers to strictly filtering excessive background noise when processing signals, and clearing or suppressing background noise when no signal is received. At present, the commonly used squelch method is carrier squelch. In the process of wireless communication, the squelch is controlled by detecting the carrier strength of the received radio frequency signal. Generally, the carrier phase-locked loop is used to extract the carrier, and the carrier statistics are output by the judgment loop. Whether the value is greater than the threshold determines whether to turn off the voice output. [0003] The inventors of the present application have found in the long-term research and development that the transmitter and the receiver may have inconsistent carrier fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04B17/336
CPCH04W24/02H04B17/336Y02D30/70
Inventor 罗铨戚国刚刘以展
Owner HYTERA COMM CORP