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Carrier phase tracking method and device

A carrier phase and carrier technology, applied in the field of carrier phase tracking methods and devices, can solve problems such as multi-carrier phase tracking, achieve the effects of improving tracking speed and tracking accuracy, and solving multi-carrier phase tracking problems

Active Publication Date: 2021-07-16
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a carrier phase tracking method and device to solve the problem of multi-carrier phase tracking in an OFDM system

Method used

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  • Carrier phase tracking method and device
  • Carrier phase tracking method and device

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Embodiment Construction

[0021] 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.

[0022] Such as figure 1 As shown, it is a flow chart of the steps of the carrier phase tracking method in the embodiment of the present invention, and the method includes the following steps:

[0023] Step 101: Obtain a time-domain OFDM symbol, and obtain a PRS frequency-domain signal corresponding to a terminal serving cell based on the time-dom...

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Abstract

The embodiment of the invention provides a carrier phase tracking method and device, and the method comprises the steps: obtaining a time domain OFDM (Orthogonal Frequency Division Multiplexing) symbol, and obtaining a PRS (Positioning Reference Signal) frequency domain signal corresponding to a terminal service cell based on the time domain OFDM symbol; obtaining a frequency domain phase compensation value based on a PRS frequency domain signal, and performing phase compensation on the PRS frequency domain signal through the frequency domain phase compensation value; and obtaining a time domain phase compensation value based on the frequency domain phase compensation value, and performing phase compensation on the time domain OFDM symbol through the time domain phase compensation value. According to the embodiment of the invention, the multi-carrier phase tracking problem of the OFDM system is solved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a carrier phase tracking method and device. Background technique [0002] The third generation partnership project (3rd Generation Partnership Project, 3GPP) has defined a variety of user terminal positioning methods, including the observed time difference of arrival positioning method (Observed Time Difference Of Arrival, OTDOA), enhanced cell ID positioning method (Enhanced-Cell Identification , E-CID) and uplink time difference of arrival positioning method (Uplink observed Time Difference Of Arrival, UTDOA) and so on. The main advantage of these methods is that the position of the terminal can be determined by measuring the own reference signal of the wireless communication network instead of based on the external reference signal of the wireless communication network. Since these positioning methods are based on the wireless communication network's own refere...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04L27/38
CPCH04L27/2669H04L27/3863H04L27/3872H04L27/26H04L27/38G01S19/21
Inventor 李刚任斌张振宇达人孙韶辉
Owner DATANG MOBILE COMM EQUIP CO LTD