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

A Physical Layer Adaptive ACM Synchronization Device Based on Satellite Communication

A technology of synchronization equipment and satellite communication, applied in the field of satellite communication, can solve the problems of low estimation accuracy, inability to perform stable tracking, slow locking of clock error signals, etc., and achieve the effect of low demodulation threshold

Active Publication Date: 2020-12-25
四川安迪科技实业有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Problems existing in the existing ACM adjustment: SNR (Signal-Noise Ratio, signal-to-noise ratio) estimation accuracy is low under low noise, the offset frequency after frequency compensation is large, the clock error signal locking speed is slow, and stable tracking cannot be performed And other issues

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 Physical Layer Adaptive ACM Synchronization Device Based on Satellite Communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Such as figure 1 As shown, a physical layer adaptive ACM synchronization device based on satellite communication, including ACM physical frame sending module 1 and ACM physical frame synchronization receiving module 3, ACM physical frame sending module 1 and ACM physical frame synchronization receiving module 3 through the satellite channel 2 in series;

[0024] The ACM physical frame sending module 1 includes an ACM physical framing module 11, a digital up-conversion module 12 and a digital-to-analog converter 13, and the ACM physical framing module 11 is connected in series on the digital up-conversion module 12, and the digital up-conversion The module 12 is connected in series on the digital-analog converter 13, and the ACM physical framing module 11 is the receiving end of the SNR information 10, and the digital-analog converter 13 is the signal output end;

[0025] The ACM physical frame synchronization receiving module 3 includes a signal converter 30 and an ACM...

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 physical layer adaptive ACM synchronization method based on satellite communication, comprising an ACM physical frame sending module and an ACM physical frame synchronous receiving module, wherein the ACM physical frame sending module and the ACM physical frame synchronous receiving module are connected in series through a satellite channel. The physical layer adaptive ACM synchronization method disclosed by the invention has the advantages of having a simple structure and high SNR estimation accuracy under low noise, effectively reducing the frequency offset after frequency compensation, having a high clock signal locking speed, being able to perform stable tracking and having relatively high practicability.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a physical layer adaptive ACM synchronization device based on satellite communication. Background technique [0002] In the satellite communication system, ACM (Adaptive Modulation and Coding, Adaptive Modulation and Coding) technology is usually used to adjust the modulation and coding level, modulation and coding strategy according to the channel environment. Single channel single carrier system for communication. [0003] ACM technology establishes a closed-loop control system through the return channel, which is one of the effective measures to improve channel utilization. The basic idea is that the receiving end estimates the channel in real time according to the quality of the received signal, and passes the estimated channel state information through the feedback channel. The transmitter will then dynamically change the coding and modulation methods accord...

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): H04B7/185H04L27/00
CPCH04B7/1851H04B7/18519H04B7/18582H04L27/0014H04L2027/0026H04L2027/0053H04L2027/0069H04L2027/0097
Inventor 曾辉
Owner 四川安迪科技实业有限公司
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