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Synchronous detection method, device, equipment with communication capability, and storage medium

A synchronous detection and preset technology, applied in the field of communication, can solve problems such as timing errors

Active Publication Date: 2021-05-04
CHINA ELECTRONICS TECH GRP NO 7 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Based on this, it is necessary to provide a synchronous detection method, a device, a device with communication capabilities, and a storage medium for the problem that timing detection is affected by frequency deviation. The larger the frequency deviation, the more obvious the impact, and the more prone to timing errors.

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  • Synchronous detection method, device, equipment with communication capability, and storage medium

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[0044] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific implementation manners described here are only used to explain the present application, and do not limit the protection scope of the present application.

[0045] see figure 1 , a synchronous detection method, performing the following steps S210 to S260:

[0046] Step S210, acquiring the maximum preset number of timing measurement values ​​within the preset observation range.

[0047] Among them, the timing metric value is obtained by the timing metric function Determined, where n represents the nth received sample point, N is the length of the reference sequence, P is an integer that can be divided by N, "|.|" represents the absolute value operation, "*" represents the conjugate operation, timing m...

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Abstract

The present application relates to a synchronous detection method, device, equipment with communication capability, and storage medium, including: acquiring the largest preset number of timing measurement values ​​within a preset observation range; timing positions, determining a preset number of candidate timing positions; determining a preset number of candidate receiving sequences according to the preset number of candidate timing positions; Offset compensation, to obtain the candidate receiving sequence after frequency offset compensation; determine the correlation result between each candidate receiving sequence after frequency offset compensation and the local reference sequence; determine the timing measurement value and frequency offset estimation value corresponding to the correlation result with the largest value as The final timing estimate position and the final frequency offset estimate. It solves the problem that because the timing detection is affected by the frequency deviation, the greater the frequency deviation, the more obvious the impact, and the more prone to timing errors.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a synchronization detection method, device, equipment with communication capability, and storage medium. Background technique [0002] Communication between devices requires time and frequency synchronization to be established. Time synchronization is used to determine the correct symbol start position in the time domain; carrier frequency synchronization is used to reduce or eliminate the influence of frequency errors caused by crystal oscillator deviation and Doppler effect. Usually timing synchronization is performed first, and then frequency synchronization is performed, because frequency offset estimation often depends on candidate receiving sequences, and candidate receiving sequences need to be obtained on the basis of timing synchronization. This means that the timing synchronization needs to be performed under the condition that the frequency offset ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/00H04W56/00
CPCH04L27/0014H04L2027/0026H04W56/0035
Inventor 徐子龙刘为童进宋怡昕
Owner CHINA ELECTRONICS TECH GRP NO 7 RES INST