Signal frequency offset compensation method and device, equipment and storage medium

CN119629007APending Publication Date: 2025-03-14MORNINGCORE HLDG CO LTD
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Patent Information

Application Number
CN202311175322.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-09-12
Publication Date
2025-03-14

AI Technical Summary

Technical Problem

In sidelink application scenarios, the frequency deviation caused by the received signal is difficult to accurately compensate for due to the Doppler effect. Especially in the case of low signal-to-noise ratio, the frequency deviation estimation accuracy of the existing methods is low, resulting in large compensation errors.

Method used

By performing integer frequency deviation estimation and decimal frequency deviation estimation on the received signal, the integer frequency deviation estimation and the decimal frequency deviation estimation are obtained respectively, these estimates are combined to obtain the total frequency deviation estimation, and frequency deviation compensation is performed based on the total frequency deviation estimation.

Benefits of technology

Through this method, the error of frequency deviation estimation is reduced, the frequency deviation compensation accuracy of the received signal is improved, and the original transmitted signal is more accurate.

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Patent Text Reader

Abstract

The embodiment of the invention discloses a signal frequency offset compensation method and device, equipment and a storage medium, and the method comprises the steps: carrying out the integer frequency offset estimation of a received signal to obtain an integer frequency offset estimation value when the obtained received signal is determined to have integer frequency offset; performing coarse frequency offset calculation on the received signal to obtain a coarse frequency offset estimation result, performing fine frequency offset calculation on the received signal to obtain a fine frequency offset estimation result, and obtaining a decimal frequency offset estimation value according to the coarse frequency offset estimation result and the fine frequency offset estimation result; and combining the integer frequency offset estimation value and the decimal frequency offset estimation value to obtain a total frequency offset estimation value, and performing frequency offset compensation on the received signal according to the total frequency offset estimation value. The integer frequency offset estimation and the decimal frequency offset estimation are performed on the received signal, and the error of the total frequency offset estimation value obtained according to the estimation result is reduced, so that the original sending signal obtained when the received signal is compensated according to the total frequency offset estimation is more accurate.
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Citation Information

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