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

Multi-cell cooperative transmission method

A technology of multi-cell cooperation and transmission method, which is applied in the field of multi-cell cooperative transmission in a multi-antenna downlink system, can solve problems such as performance loss, and achieve the effects of eliminating data interference, increasing user transmission rate, and improving spectrum utilization

Inactive Publication Date: 2014-06-11
SHANDONG COMP SCI CENTNAT SUPERCOMP CENT IN JINAN
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, there must be a certain performance loss in the realization of spectral efficiency.

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-cell cooperative transmission method
  • Multi-cell cooperative transmission method
  • Multi-cell cooperative transmission method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] Referring to the accompanying drawing 1 of the description, the present invention will be described in detail below through the accompanying drawings and embodiments.

[0048] Figure 1-a A schematic diagram of a traditional multi-cell downlink is shown. In the figure, the solid line indicates that the user receives the useful signal information transmitted from the base station in the cell where the user is located, and the dotted line indicates the co-channel interference information received by the user from other user information transmitted by the adjacent base station. In traditional multi-cell, each base station only obtains the channel fading information of its own cell, and transmits the user information within the coverage area of ​​its own cell. In this way, users in each cell are affected by co-channel interference signals from adjacent cells, and the quality of their received signals is greatly reduced. Therefore, it is difficult to improve the capacity of...

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 a block diagonalization technology-based cooperative transmission optimizing scheme, which is applied to a multiple-input multiple-output (MIMO) multi-cell downlink system and can increase the frequency spectrum utilization rate of the system. The basic thought of cooperative transmission is that: a base station determines a scheme for preprocessing each piece of user data information before transmission in combination with a block diagonalization technology according to the channel information of each user; and then optimal power allocation is performed on the user data information by adopting a principle of optimality according to the channel state information of the user and the preprocessing scheme thereof. Compared with the other cooperative transmission schemes adopting the block diagonalization technology, the scheme provided by the invention is a compromise choice for frequency spectrum efficiency and realization complexity.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a multi-cell cooperative transmission method of a multi-antenna downlink system. Background technique [0002] With the increasing development of wireless communication technology, spectrum resources become increasingly scarce. In order to meet people's increasing requirements for data transmission speed, how to improve spectrum utilization efficiency as much as possible within limited spectrum resources to meet the needs of broadband data services becomes the key. The multiple-input multiple-output (Multiple-Input Multiple-Output, MIMO) spatial multiplexing technology is widely considered to be an effective means to improve spectrum utilization efficiency. However, in a multi-cell system, the transmitter needs to adopt an effective method to make full use of the MIMO spatial multiplexing technology, so as to suppress the impact of multi-cell interference. [0003]...

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): H04W16/14H04W52/04H04W72/04
Inventor 王亚琛马晓凤姜竞赛李晔
Owner SHANDONG COMP SCI CENTNAT SUPERCOMP CENT IN JINAN
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