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Frequency offset correction method and receiver

A frequency offset correction and frequency offset value technology, applied in the field of frequency offset correction methods and receivers, can solve the problems of pilot information not completely eliminating frequency offset, complicated operation, and inability to fully utilize pilot information.

Active Publication Date: 2021-07-16
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Application Information

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Problems solved by technology

[0004] However, the existing technology needs to perform FFT transformation, the operation is more complicated, and the pilot information cannot be fully utilized. The processed pilot information has not completely eliminated the frequency offset, and the frequency offset correction cannot be completed quickly and accurately.

Method used

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  • Frequency offset correction method and receiver

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Embodiment Construction

[0028] In order to make the purposes, 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 with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Reference below Figure 1-Figure 5 The frequency offset correction method of the embodiment of the present invention is described.

[0030] like figure 1 As shown, the frequency offset correction method according to the embodiment of the present invention includes steps 100 to 300 .

[0031] Step 100: Receive multi-packet ...

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Abstract

An embodiment of the present invention provides a frequency offset correction method and a receiver, wherein the method includes: receiving multiple packets of pilot information; processing two packets of pilot information through conjugate multiplication, and determining the two packets of pilot information A frequency offset value between information; performing frequency offset compensation based on the frequency offset value. The receiver is used to execute the above method. The frequency offset correction method and receiver of the embodiments of the present invention do not occupy or waste any frame structure resources, and at the same time perform frequency offset estimation in the time domain, which is simpler and faster, and is more suitable for the use environment of frequency domain equalization.

Description

technical field [0001] The present invention relates to the field of communication technologies, and more particularly, to a frequency offset correction method and a receiver. Background technique [0002] With the development of communication technology, communication technology is gradually developing in the direction of high-speed and long-distance wireless communication. However, with the increase of communication rate, the natural interference under wireless channel conditions will become stronger and stronger. For the communication system , due to the frequency difference between the sending end and the receiving end, as well as the influence of Doppler frequency shift caused by the movement of the receiving end, there is a frequency offset between the carrier frequency and the frequency of the local crystal oscillator, referred to as "frequency shift". The frequency offset needs to be corrected to eliminate communication interference. [0003] The method for correcti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/00H04L27/38
CPCH04L27/0014H04L27/3854H04L2027/0028
Inventor 王帅金万杨宋哲陈菁菁赵钦源张昊星安建平卜祥元方金辉
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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