Frequency synchronization method and device

A technology of frequency synchronization and frequency deviation, which is applied in the field of communication and can solve problems such as low precision

Active Publication Date: 2018-06-08
华力智芯(成都)集成电路有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0004] Aiming at the relatively low accuracy of frequency synchronization in related technologies, no solution has been proposed so far

Method used

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  • Frequency synchronization method and device

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Embodiment Construction

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0018] The following describes in detail in conjunction with preferred embodiments.

[0019] This preferred embodiment provides a frequency synchronization method, figure 1 is a flowchart of the frequency synchronization method according to the present invention, such as figure 1 As shown, the method includes the following steps S101 to S108.

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Abstract

The present invention relates to the communication field, in particular to a frequency synchronization method and device. A frequency synchronization method, comprising: extracting a burst header from a burst signal; performing frequency offset estimation and phase offset estimation on the burst header; using the frequency offset estimation to perform frequency offset compensation on the received burst signal , using the phase deviation estimation to perform phase deviation compensation on the received burst signal; extracting a unique word from the phase deviation compensated burst signal; using the unique word to perform phase ambiguity on the phase compensated burst signal Eliminate and perform frequency synchronization. A frequency synchronization device includes: a first extraction module, an estimation module, a first compensation module, a second extraction module and a processing module. Through the present invention, the non-data-assisted method is used to estimate the frequency and phase deviation without using unique characters, which solves the problem of low estimation accuracy when the number of unique characters is small.

Description

technical field [0001] The present invention relates to the communication field, in particular to a frequency synchronization method and device. Background technique [0002] With the development of the information and communication industry, my country's ground mobile communication system has been relatively developed. However, due to my country's vast territory, diverse geographical environment, and uneven population distribution, the ground mobile communication system only covers 30% of my country's land area, and the remaining 70% of the country's land area lacks basic communication support. The satellite mobile communication system can effectively expand its coverage through satellites, so that user terminals can be connected to public or private communication networks on a global scale. Therefore, as an important part of the information and communication industry, the satellite mobile communication system plays an important role in the construction of national informa...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00
Inventor 刘解华刘斌彬张克俭刘凯
Owner 华力智芯(成都)集成电路有限公司
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