A Coordinated Multipoint Transmission Method Based on Interference Alignment and Interference Neutralization

An interference alignment and multi-point transmission technology, applied in the field of communication, can solve the problems of reducing system throughput performance and not being able to fully utilize the spatial multiplexing capability of multi-antenna systems, and achieve the effect of residual interference elimination

Inactive Publication Date: 2017-10-13
XIDIAN UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a coordinated multi-point transmission method based on interference alignment and interference neutralization, which aims to solve the existing cooperative multi-point transmission method that requires user-side coordination and cannot make full use of the multi-antenna system to provide The spatial multiplexing capability reduces the problem of system throughput performance

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 Coordinated Multipoint Transmission Method Based on Interference Alignment and Interference Neutralization
  • A Coordinated Multipoint Transmission Method Based on Interference Alignment and Interference Neutralization
  • A Coordinated Multipoint Transmission Method Based on Interference Alignment and Interference Neutralization

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0087] Such as figure 1 As shown, the present invention studies the downlink communication system of coordinated multi-point transmission, the system includes two base stations (eNodeB), two users (UE), and the number of antennas of each base station and each user is 2;

[0088] Such as figure 2 As shown, it is a specific flowchart of the coordinated multi-point transmission method based on interference alignment and interference neutralization of the present invention, which specifically includes the following steps:

[0089] (1) The base station obtains ideal channel state information through user feedback, etc. The so-called ideal channel state information is accurate channel state information. The CSI sharing and data information exchange between base stations are realized through the X2 interface, and the two base stations obtain all channel information. Indicates the channel matrix between base station i and user j;

[0090] (2) The base station cooperates and only...

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 coordinated multi-point transmission method based on interference alignment and interference neutralization, which only utilizes base station side cooperation, through precoding vector design based on interference alignment and interference neutralization, and user side adopts orthogonal projection receiving filtering technology Eliminate residual interference and restore desired data; compared with the prior art, the present invention only utilizes base station side cooperation, and realizes concurrent transmission of multi-channel data through joint design of transmit precoding and receive filter. At the transmitting end, use IN to align two interference signals carrying the same data information in opposite directions of the same subspace, and use IA to align interference signals carrying different data information in the same subspace. The receiving end uses orthogonal projection filtering to complete the elimination of residual interference and the recovery of expected data. In addition, the present invention can make full use of the space multiplexing capability provided by the multi-antenna system by using part of the data interaction and does not require user-side cooperation, thereby improving system throughput performance.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a coordinated multi-point transmission method based on interference alignment and interference neutralization. Background technique [0002] It is an inevitable trend in the development of wireless communication networks to improve spectral efficiency to meet the increasing user data transmission requirements. With the continuous increase of the frequency reuse degree, the users located at the edge of the cell will receive co-channel interference from adjacent cells, thus affecting the overall performance of the system. Therefore, how to effectively solve the interference problem of the cell edge users and improve the system throughput has become an urgent problem to be solved. The coordinated multi-point (Coordinated multi-point, CoMP) transmission technology achieves this goal through the cooperation between multiple cells, and has become one of the key techn...

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): H04B7/06H04B7/08H04L1/06
Inventor 李钊顾军张翼赵林靖高晓杰刘勤杨家玮黄鹏宇
Owner XIDIAN 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