Signal transmission optimization method for FDMA (Frequency Division Multiple Access) digital channelized satellite communication systems

A technology of satellite communication system and digital channelization, which is applied in transmission system, radio transmission system, sustainable communication technology, etc., and can solve problems such as not being able to meet all requirements, link signal-to-noise ratio cannot meet the requirements, etc.

Active Publication Date: 2013-09-04
TSINGHUA UNIV
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010]In the previous step, the M-dimensional inequality constraints were ignored, so in the optimal solution obta

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
  • Signal transmission optimization method for FDMA (Frequency Division Multiple Access) digital channelized satellite communication systems
  • Signal transmission optimization method for FDMA (Frequency Division Multiple Access) digital channelized satellite communication systems
  • Signal transmission optimization method for FDMA (Frequency Division Multiple Access) digital channelized satellite communication systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] The present invention proposes a method for optimizing the transmission capacity of a digital channelized satellite transponder applicable to the M-terminal M-link situation, described in conjunction with the parameters of the accompanying drawings as follows:

[0055] A typical Ka-band digital channelized satellite transponder is taken as an example to illustrate the optimization effect of the present invention. In this example, the bandwidth of the transponder is 124.8M, which is divided into 48 basic sub-channels, each of which has a bandwidth of 2.6MHz, and there are 3 link types in the system. Type I links: 4, occupying 2 basic sub-channels in total, type A terminals send, B type terminals receive, data rate 1Mbps. Type II links: 4, occupying 2 basic sub-channels in total, type B terminals send, type A terminals receive, data rate 1Mbps. Type III links: 8, occupying 34 basic sub-channels in total, type B terminals send, B type terminals receive, data rate 10Mbps. ...

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

An optimized signal transmission loading method for FDMA (Frequency Division Multiple Access) digital channelized satellite communication systems, which belongs to the technical field of mobile wireless communication, is characterized in that in order to maximize the communication capacity of a satellite repeater, the power of ground user transmitters is first set as a maximum value, and on the basis, an operating point of the satellite repeater is one-dimensionally searched; for each possible operating point in the search range, a multi-level optimization method is used, the Lagrangian multiplier method is used for iteratively working out a gain parameter for each link, moreover, the gains of the links not meeting the requirement on the signal-to-noise ratio are rectified, and the optimal values of on-satellite channel gain parameters are obtained. The optimal parameters are used for configuring the repeater, so that the working point of an on-satellite high power amplifier is changed, and thereby the purpose of maximizing the overall communication capacity is achieved in the end. The signal transmission optimization method is suitable for broadband multi-channel gain-adjustable satellite repeater systems, particularly satellite repeater systems adopting the digital channelization technology and requiring the adjustability of the uplink transmission power of ground sides.

Description

Technical field: [0001] The invention belongs to the technical field of mobile wireless communication, and relates to a capacity optimization method for an FDMA satellite communication system. Background technique: [0002] Broadband satellite communication technology will get more and more applications in the future. The basic function of a broadband communication satellite is to provide forwarding services for widely distributed terminal equipment on the ground. Because these terminal devices have high data transmission rate requirements, in order to meet such requirements, we must improve the performance of channelization technology and switching technology in broadband satellite communications. [0003] With the continuous improvement of the working frequency band, the bandwidth of modern satellite communication is getting wider and wider, and the main bottleneck affecting communication performance has gradually shifted from bandwidth limitation to power limitation. In...

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): H04B7/185
CPCY02D30/70
Inventor 晏坚陈翔刘春立李博
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap