Supercharge Your Innovation With Domain-Expert AI Agents!

A Relay System Power Control Method Based on Statistical Channel State Information

A channel state information and relay system technology, applied in power management, wireless communication, electrical components, etc.

Active Publication Date: 2020-06-16
ZHEJIANG UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The relay system power control method of the present invention, on the one hand, solves the problem of power control in the case of a multi-relay system with path delay difference, and on the other hand, uses statistical channel state information to ensure system performance in a fast fading environment

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 Relay System Power Control Method Based on Statistical Channel State Information
  • A Relay System Power Control Method Based on Statistical Channel State Information
  • A Relay System Power Control Method Based on Statistical Channel State Information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0040] The system structure of relay system power control method based on statistical channel state information is as follows: figure 1 , for a rhombus relay system with N+2 nodes, the source node S first broadcasts the signal to the relay node R 1 , R 2 ,...,R N ; N relay nodes R i After the signal is decoded, the correctly decoded signal is forwarded to the destination node D at the same time; the node D receives the multi-channel superimposed signal with random phase difference, outputs the local received signal-to-noise ratio and makes a judgment, if the signal-to-noise ratio is lower than the preset Threshold gamma th , an interruption occurs.

[0041] This example is based on figure 2 The algorithm flow chart is given. The relay system obtains the channel fading factor by collecting the statistical channel state information of the comm...

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 relay system power control method based on statistical channel state information. The method comprises the following steps: firstly, establishing a multi-relay cooperative communication system framework with path delay, and establishing a power control optimization problem model shaped like symbolic programming by taking minimization of the interruption probability of a relay system as a target; carrying out variable substitution, linear approximation and piecewise linear approximation on the symbolic programming problem, and converting an original problem into a mixed integer linear programming problem which is easier to solve; and finally, obtaining an optimal power control coefficient of all relay nodes by utilizing a global optimal algorithm. According to themethod, for the multi-relay cooperative communication system with time delay, the power control optimal solution is obtained on the basis of statistical channel state information of all links, the communication overhead is low, and the robustness to a fast fading channel is high.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a relay system power control method based on statistical channel state information. Background technique [0002] In view of the fading characteristics of wireless channels, diversity technology is a commonly used method to combat fading and improve receiving performance. In the relay system, multiple relay nodes cooperate to help the source node forward signals to the destination node, so as to achieve cooperative diversity, and have many advantages such as low transmission power, large communication range, and wide application scenarios. [0003] Power control is a classical communication system performance optimization method. However, the existing relay system power control methods generally consider how to increase the system capacity. These methods are based on the instantaneous channel state information of the system, and each communication node...

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): H04W52/24H04W52/30H04W52/46
CPCH04W52/24H04W52/241H04W52/30H04W52/46
Inventor 谢磊陈惠芳赵越王匡
Owner ZHEJIANG UNIV
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