Check patentability & draft patents in minutes with Patsnap Eureka AI!

Carrier frequency offset estimation method and device

A carrier frequency offset and coarse estimation technology, which is applied in the direction of modulated carrier system, multi-frequency code system, digital transmission system, etc. Estimated range and other issues to achieve the effect of improving the estimated range and reducing processing complexity

Pending Publication Date: 2022-04-08
SPACE STAR TECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing open-loop carrier synchronization algorithms, such as M&M algorithm, Kay algorithm, Fitz algorithm, etc., cannot take into account the carrier frequency offset estimation accuracy and estimation range, so it is difficult to meet low-orbit satellites, large Doppler range, and fast-changing application scenarios

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Carrier frequency offset estimation method and device
  • Carrier frequency offset estimation method and device
  • Carrier frequency offset estimation method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] In order to more clearly describe the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that are used in the embodiments. Apparently, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to these drawings without creative efforts.

[0048] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, and the embodiments cannot be repeated here one by one, but the embodiments of the present invention are not therefore limited to the following embodiments.

[0049] see figure 1, the carrier frequency offset estimation method of the present invention, at first obtain symbol and time synchronization information, and carry out autocorrelation operation according to symbol and time synchronization information, then roughl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a carrier frequency offset estimation method and device, and the method comprises the following steps: a, obtaining symbol and time synchronization information, and carrying out the self-correlation operation according to the symbol and time synchronization information; b, carrying out coarse estimation on carrier frequency offset; c, generating an autocorrelation operation result after coarse carrier frequency offset compensation; d, carrying out fine estimation on the carrier frequency offset; and e, estimating the carrier frequency offset by combining the results of the coarse estimation and the fine estimation. The invention can solve the problem that the existing algorithm is difficult to consider both the carrier frequency offset estimation precision and the estimation range.

Description

technical field [0001] The invention relates to a carrier frequency offset estimation method and device. Background technique [0002] For different signal types, carrier frequency offset estimation algorithms can be divided into closed-loop synchronization algorithms and open-loop synchronization algorithms. For continuous signals (such as GNSS signals), a closed-loop synchronization algorithm is usually used; for short-term burst signals, such as the new satellite timing and positioning service (Satellites Time and Location, STL), the traditional closed-loop tracking algorithm is no longer applicable, and it is necessary to use Open loop synchronization algorithm. The open-loop carrier synchronization algorithm can be divided into data-assisted carrier synchronization algorithm and non-data-assisted carrier synchronization algorithm according to whether the training sequence is used, and can be divided into data-assisted algorithm, decision-guided algorithm and non- Data...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04L27/00H04L27/26
Inventor 陈耀辉董启甲王盾徐振兴刘坤张爽娜薛伟罗晨
Owner SPACE STAR TECH CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com