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

Spread spectrum synchronization method and device based on adaptive threshold

An adaptive threshold and adaptive gate technology, applied in the field of spread spectrum communication, can solve the problems of many false alarms and low synchronization accuracy, and achieve the effect of eliminating false alarms and precise system synchronization

Active Publication Date: 2015-11-11
SICHUAN JIUZHOU ELECTRIC GROUP
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the objectives of the present invention is to provide a spread spectrum synchronization method and device based on an adaptive threshold to solve the technical problems of many false alarms and low synchronization accuracy in the existing spread spectrum synchronization method

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
  • Spread spectrum synchronization method and device based on adaptive threshold
  • Spread spectrum synchronization method and device based on adaptive threshold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0054] Embodiments of the present invention provide a spread spectrum synchronization method based on an adaptive threshold, such as figure 1 As shown, the method includes: in step 101, performing statistics on a section of received signals within a clock cycle according to a local spread spectrum sequence to form a comparison decision value, and at the same time forming an adaptive threshold value based on a...

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 spread spectrum synchronization method and device based on an adaptive threshold, belongs to the technical field of spread spectrum communication, and aims to solve the technical problems of the presence of a large quantity of false-alarm phenomena and low synchronization accuracy in an existing spread spectrum synchronization method. The spread spectrum synchronization method based on the adaptive threshold comprises the following steps: performing statistics on a segment of receipt signal according to a local spread spectrum sequence in a clock period to form a comparison decision value, and meanwhile forming an adaptive threshold value based on the segment of receipt signal; and if a comparison decision value formed in a middle clock period is greater than the comparison decision values formed in other clock periods in a plurality of clock periods, and the comparison decision values formed in the middle clock period and two clock periods before and after the middle clock period are greater than the adaptive threshold values formed in the clock periods respectively, judging that the receipt signal of the middle clock period is synchronous to the local spread spectrum sequence.

Description

technical field [0001] The invention relates to the technical field of spread spectrum communication, in particular to a spread spectrum synchronization method and device based on an adaptive threshold. Background technique [0002] During data communication, the receiver must have precise synchronization in order to accurately recover the transmitted data. For burst data communication, the information transmission is discontinuous, so it is difficult to achieve synchronization through the feedback loop. The usual solution is to use spread spectrum technology to insert a set of spread spectrum sequences before the transmitted data frame as a system Synchronize. The receiving end forms a judgment quantity by performing correlation statistics calculation on the spread spectrum sequence, and judges a position exceeding a threshold in the judgment quantity as a synchronous position. [0003] In a wireless communication system, the received signal will be affected by the wirele...

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 Applications(China)
IPC IPC(8): H04B1/7073
Inventor 何韬
Owner SICHUAN JIUZHOU ELECTRIC GROUP
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