Frequency synchronizing method and device

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

Active Publication Date: 2014-04-23
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 synchronizing method and device
  • Frequency synchronizing 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 invention relates to the field of communication, in particular to a frequency synchronizing method and device. The frequency synchronizing method comprises the following steps: extracting a burst head from a burst signal; performing frequency deviation estimation and phase deviation estimation on the burst head; performing frequency deviation compensation on a received burst signal by using the frequency deviation estimation, and performing phase deviation compensation on the received burst signal by using the phase deviation estimation; extracting unique characters from the burst signal subjected to the phase deviation compensation; performing phase fuzzy elimination on the burst signal subjected to phase compensation by using the unique characters, and synchronizing the frequency. The frequency synchronizing device comprises a first extracting module, an estimating module, a first compensating module, a second extracting module and a processing module. By adopting the frequency synchronizing method and the device, the frequency and phase deviation estimation are performed by using a non-data-aided method without using the unique characters, so that the problem of low estimation accuracy in case of a small quantity of unique characters is solved.

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 guarantees. 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 info...

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Application Information

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Patent Type & Authority Applications(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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