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

Interference aligning method based on combined power distribution in LTE

A technology of joint power allocation and interference alignment, which is applied in the field of interference alignment power allocation in LTE, can solve the problems of underutilization of the total system power and system performance degradation, etc.

Active Publication Date: 2013-06-19
CHONGQING UNIV OF POSTS & TELECOMM
View PDF0 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the total power of the system is not fully utilized, which degrades the system 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
  • Interference aligning method based on combined power distribution in LTE
  • Interference aligning method based on combined power distribution in LTE
  • Interference aligning method based on combined power distribution in LTE

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The implementation of the present invention will be further described in detail below with reference to the drawings and specific examples.

[0026] The system model adopted in the present invention is the K-user MIMO interference channel model (K≥2), as shown in the attached figure 1 shown. attached figure 1 Shown is the K-user MIMO interference channel model (K≥2), all transmitters are equipped with M antennas (M≥2), all receivers are equipped with N antennas (N≥2), H ij is the MIMO channel matrix between transmitter j (j=1,2,…,K) and receiver i (i=1,2,…,K). Considering that the number of users is 3 (ie K=3), the degree of freedom of the MIMO interference channel is

[0027] First, choose according to the maximum chord distance criterion The eigenvectors corresponding to the largest eigenvalues ​​obtain the precoding matrix, so that the distance between the interference subspace and the desired signal subspace is maximized; secondly, the power allocation matrix...

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 provides an interference aligning method based on combined power distribution in LTE and relates to the field of wireless communication. According to the method, interference alignment and power distribution are combined. The power distribution is conducted among each data flow. A power distribution matrix is determined by characteristic values corresponding to data flow vectors so that interference is further reduced. The interference aligning method is particularly suitable for eliminating the interference among LET network zones. System capacity and energy capacity are obtained. The interference aligning method is low in calculation complexity and easy to realize.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to the power allocation problem of interference alignment in LTE. Background technique [0002] LTE is a 3G evolution broadband mobile communication technology proposed by 3GPP. It has high data rate, reduced delay, packet transmission, wide area coverage and backward compatibility. LTE adopts the OFDM access method, and the information of different users is carried on different subcarriers. Therefore, the interference in the cell is basically eliminated, but the interference between LTE cells still exists, especially the performance degradation of the cell edge users is very obvious. [0003] Interference alignment (Interference alignment, S.Jafar, M.Fakhereddin. Degrees of freedom for the MIMO interference channel, IEEE International Symposium on Information Theory, 2006, pp.1452–1456) has become an important issue in recent years due to its advantages in system capacity Its...

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): H04B7/04H04B7/06H04B7/08H04W52/42
Inventor 谢显中周志栋雷维嘉
Owner CHONGQING UNIV OF POSTS & TELECOMM
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