Collaborative communication method and collaborative communication system based on non-orthogonal multiple access

A technology of non-orthogonal multiple access and cooperative communication, which is applied in the field of cooperative communication methods and systems based on non-orthogonal multiple access, and can solve problems such as system energy consumption

Inactive Publication Date: 2018-09-28
SOUTH CHINA UNIV OF TECH
View PDF4 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, it often occurs

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
  • Collaborative communication method and collaborative communication system based on non-orthogonal multiple access
  • Collaborative communication method and collaborative communication system based on non-orthogonal multiple access
  • Collaborative communication method and collaborative communication system based on non-orthogonal multiple access

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Such as figure 1 As shown, a cooperative communication method based on non-orthogonal multiple access, comprising the following steps:

[0079] Step 1: The relay node receives the source node signal and the channel state information of the source node signal;

[0080] The source node signal received by the relay node is:

[0081]

[0082] Among them, h 1 is the Gaussian channel of the uplink communication link, h 2 is the Gaussian channel of the downlink communication link, P 1 is the source node S 1 power, P 2 is the source node S 2 power, s 1 is the source node S 1 The source node signal of s 2 is the source node S 2 The source node signal of n R is additive white Gaussian noise, and n R Obey the mean is 0, the variance is σ 2 Gaussian distribution.

[0083] Step 2: The relay node uses continuous interference cancellation to decode the source node signal to obtain the decoded signal;

[0084] After the relay node receives the signal, the continuous i...

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 collaborative communication method based on non-orthogonal multiple access, and the method comprises the following steps: a relay node receives a source node signal and channel state information; the relay node decodes the source node signal through successive interference cancellation to obtain a decoded signal; superposition coding is executed for the coded signal according to a power distribution coefficient, the relay node sends the superposed signal to a plurality of destination nodes simultaneously through performing downlink non-orthogonal multiple access withthe plurality of destination nodes; the destination nodes perform decoding and information recovery for the superposed signal through successive interference cancellation; according to channel state information and user requirements, transmitting power and the power distribution coefficients of all the nodes are calculated, and a plurality of source nodes send the obtained information to the relaynode through performing uplink non-orthogonal multiple access with the relay node. In the method and the system provided by the invention, the non-orthogonal multiple access technology is used, userrate is satisfied, total consumption of the system is minimized, the number of access users is expanded effectively, spectrum efficiency of the system is promoted, and power consumption of the systemis reduced.

Description

technical field [0001] The invention relates to the field of wireless communication technology research, in particular to a non-orthogonal multiple access-based cooperative communication method and system. Background technique [0002] With the rapid development of wireless communication technology, people's requirements for the coverage and running time of wireless communication network are increasing day by day. In order to improve the coverage of communication network, cooperative communication based on relay is a common scheme. The use of relays can solve the problem of large path consumption between communication parties caused by geographical constraints, thereby effectively improving the coverage of the communication network and the efficiency of communication. [0003] In the prior art, however, the system often consumes too much energy. Therefore, how to fully consider the actual situation to improve relay communication performance, how to adopt reasonable power a...

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): H04W72/04H04W72/08H04W72/12H04L1/00
CPCH04L1/0014H04L1/0026H04L1/0042H04W72/0473H04W72/121H04W72/542Y02D30/70
Inventor 程香梅刘梦宇刘元
Owner SOUTH CHINA UNIV OF TECH
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