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

Multi-user two-way relay communication method based on interleave-division multiple-access (IDMA) technology

A technology of interleaving multiple access and two-way relay, which is applied in radio transmission systems, electrical components, transmission systems, etc., to achieve the effects of eliminating multi-user interference, significant performance gains, and reducing interference

Inactive Publication Date: 2011-07-20
TSINGHUA UNIV
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method introduces spread spectrum redundancy but does not bring coding gain. In actual systems, multiple access interference (Multiple Access Interference, MAI) is introduced due to the fact that spread spectrum codewords cannot be ideally synchronized, and as the number of users increases , the problem of Multiple User Interference (MUI) is more serious

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
  • Multi-user two-way relay communication method based on interleave-division multiple-access (IDMA) technology
  • Multi-user two-way relay communication method based on interleave-division multiple-access (IDMA) technology
  • Multi-user two-way relay communication method based on interleave-division multiple-access (IDMA) technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Below in conjunction with an embodiment of the method of the present invention, the specific steps of the multi-user two-way relay communication method based on interleaving multiple access technology in wireless communication proposed by the present invention are introduced. In the embodiment of the present invention, a relay node, 16 users , that is, 8 user pairs are taken as an example, and two users of one user pair need to communicate.

[0024] The method of this embodiment is divided into two stages:

[0025] In the first stage, 8 different interleavers are used to distinguish 8 user pairs, and the interleaved user pair information sequence is sent to the relay node, and the relay node performs iterative multi-user detection and decoding on the received information sequence, and then The user performs an XOR operation on the information sequence obtained after decoding to obtain an intermediate value. Specifically include the following steps:

[0026] (1) The in...

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 relates to a multi-user two-way relay communication method based on an interleave-division multiple-access (IDMA) technology, belonging to the technical field of wireless communications. The method comprises two stages: at the first stage: using different interleavers to distinguish different user pairs; sending information sequences of the interleaved user pairs to relay nodes; carrying out iterative multi-user detection decoding on the received information sequences by the relay nodes; and carrying out an XOR operation on the information sequences obtained by decoding the user pairs to obtain an intermediate value; and at the second stage: broadcasting the intermediate value obtained by the XOR operation to the user pairs; and after two users receive the intermediate value, utilizing the own information sequences of the two users and the intermediate value to carry out an XOR operation so as to obtain user information sequences of the other user which is communicated with one user, thus finishing the whole communication process. The method has maximum coding gains and channel capacity, is used to eliminate multi-access interference and multi-user interference by an iterative multi-user detection algorithm, and is used to acquire remarkable performance gains and the like.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a multi-user two-way relay communication method based on interleaved multiple access technology. Background technique [0002] The existing cellular structure introduces the cooperative communication mode of the relay. While improving the communication quality of the edge cell, it can also increase the coverage of the cell and the coverage of the blind area. There have been a lot of in-depth research results on the unidirectional relay system, but the unidirectional The half-duplex working mode of the relay system will cause the loss of spectral efficiency, and the two-way relay can just make up for this loss. At the same time, compared with the traditional one-way relay, the two-way relay can provide higher spectrum efficiency and power efficiency, so it has received extensive attention. [0003] Two-way relay is a common method in communication. For example, rea...

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): H04B7/216
Inventor 粟欣胡莉丽曾捷犹园刘昊朋卢鑫刘惜吾程青燕
Owner TSINGHUA UNIV
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