Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A Carrier Synchronization Method Based on Superposition of Training Sequence in Bit Domain

A training sequence and carrier synchronization technology, applied in the field of digital communication, can solve the problems of high algorithm complexity and small estimation range, and achieve the effect of improving estimation accuracy and enhancing anti-interception capability.

Active Publication Date: 2022-05-31
TIANJIN UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The combined method of frequency offset and channel estimation using superimposed training sequences can realize carrier frequency offset estimation without sacrificing bandwidth resources. Although this algorithm improves resource utilization, the algorithm that uses the specific vector of the matrix to solve High complexity, small estimated range

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
  • A Carrier Synchronization Method Based on Superposition of Training Sequence in Bit Domain
  • A Carrier Synchronization Method Based on Superposition of Training Sequence in Bit Domain
  • A Carrier Synchronization Method Based on Superposition of Training Sequence in Bit Domain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0063]

[0066]

[0067] wherein, and 1>w(1)>w(2)>...w(L)>0;

[0069]

[0071]

[0075]

[0078]

[0080]

specific Embodiment

[0084] The implementation process of the carrier synchronization method based on the bit-domain superimposed training sequence is exemplified.

[0095]

[0098]

[0099] wherein, and 1>w(1)>w(2)>...w(L)>0;

[0101]

[0103]

[0105] FIG. 5 is the frequency offset capture range of the coarse synchronization algorithm of the scheme of the present invention. In the coarse synchronization algorithm, the variable parameter is the maximum phase

[0108]

[0111]

[0113]

[0115] FIG. 8 is the frequency offset capture range of the fine synchronization method of the solution of the present invention. The control variable of the fine synchronization algorithm is the data block

[0116] FIG. 11 and FIG. 12 are the root mean square error curves of the carrier wave synchronization scheme for the AWGN channel and the Rayleigh fading channel.

[0117] FIG. 13 is a bit error rate performance curve diagram of the system of the solution of the present invention under different transmission schem...

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 discloses a carrier synchronization method based on bit field superposition training sequence. The present invention proposes a carrier synchronization method with strong anti-interference ability aiming at the signal design method of the superposition of the sparse code word and the pseudo-random sequence. In this method, the hidden pseudo-random sequence is used to estimate the frequency offset at the receiving end, and the combination of coarse synchronization and fine synchronization is used to improve the estimation accuracy. Finally, sparse decoding and channel decoding are performed on the restored sequence. The carrier synchronization method proposed by the present invention based on the superposition of sparse coding codewords and pseudo-random sequences can ensure accurate estimation of carrier frequency offset without occupying additional bandwidth resources, and realize reliable transmission of information in combination with channel coding; In addition, the superposition of pseudo-random sequences can enhance the anti-interception ability of burst signals; when there is a fragment loss in the data frame, the remaining hidden pseudo-random sequences can still be used to estimate the frequency offset.

Description

A Carrier Synchronization Method Based on Bit Domain Superposition Training Sequence technical field [0001] The present invention relates to the field of digital communication, in particular to a carrier synchronization method based on bit-domain superimposed training sequences. Background technique [0002] In the information age, wireless communication transmission faces higher challenges. With the development of Internet data services, People's demand for wireless communication is also getting higher and higher, and wireless communication, especially burst communication, is developing rapidly. burst communication It is a special communication mechanism, the signal duration is short, the transmission interval is long, and the communication system transmits a large amount of data in a short time. This can effectively reduce the probability of information interception and interference. Compared with conventional communication systems, burst communication systems Has ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L27/00
CPCH04L27/2657H04L27/0014H04L2027/0026Y02D30/70
Inventor 陈为刚李姗姗韩昌彩
Owner TIANJIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com