Pre-coding matrix selection method, device and system

A technology of precoding matrix and selection device, which is applied in the field of communication and can solve problems such as large amount of calculation and complicated operation.

Inactive Publication Date: 2014-03-12
HUAWEI TECH CO LTD
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a method, device and system for selecting a precoding matrix, which are suitable for MIMO systems with multiple in

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
  • Pre-coding matrix selection method, device and system
  • Pre-coding matrix selection method, device and system
  • Pre-coding matrix selection method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0074] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0075] See figure 1 , is a schematic structural diagram of a precoding matrix selection device provided in an embodiment of the present invention, the precoding matrix selection device is suitable for the selection of a precoding matrix in a MIMO system, including: a receiver 01, an estimation module 02, and a calculation module 03. Selection module 04 and feedback module 05, wherein:

[0076] The receiver 01 is configured to receive the pilot information sent by ...

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 embodiment of the invention discloses a pre-coding matrix selection method, a device and a system. The method comprises the steps that pilot frequency information sent by a sending end is received through the current channel; according to the pilot frequency information, an equivalent channel matrix of the current channel is estimated; inner product and modulo operation are respectively carried out on the equivalent channel matrix and each pre-coding matrix in a preset pre-coding codebook collection, so as to acquire a number of module values; the pre-coding matrix corresponding to the maximum module value in a number of module values is selected as a target matrix; and the target matrix is fed back to the sending end, so that the sending end selects the target matrix to carry out pre-coding on a signal sent through the current channel. The embodiment of the invention further discloses a pre-coding matrix selection device and system. According to the invention, the pre-coding matrix selection method, device and system are provided; a pre-coding selection process can be simplified; the calculation amount in the pre-coding selection process is reduced; and the problems of large calculation amount and complicated operation of the pre-coding matrix selection method in the prior art, are solved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, device and system for selecting a precoding matrix. Background technique [0002] Multiple-Input-Multiple-Output (MIMO) technology is aimed at improving the spectrum utilization rate of the system and expanding the capacity of the system. Multiple antennas or antenna arrays are used at the signal transmitting end and receiving end to transmit signals. In order to improve the performance of the system, the MIMO communication system can use the channel information to precode the signal to be sent. One of the ways is to pre-design a certain code containing a series of precoding matrices known by both the sending end and the receiving end. The codebook, the receiving end selects a precoding matrix in the codebook, and feeds back the index or indication (Precoding Matrix Indicator, PMI) of the precoding matrix to the sending end, so that the sending end uses t...

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): H04L1/00H04L1/06
Inventor 胡文权花梦吴更石
Owner HUAWEI TECH CO LTD
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