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

Channel state information feedback method, precoding method, terminal device and base station

A technology of channel state information and precoding matrix, which is applied in the field of multi-antenna, can solve the problem of limited accuracy and achieve the effect of improving accuracy

Active Publication Date: 2017-11-21
HUAWEI TECH CO LTD
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the accuracy of determining the precoding matrix of the NLOS channel based on the LOS codebook is very limited.

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
  • Channel state information feedback method, precoding method, terminal device and base station
  • Channel state information feedback method, precoding method, terminal device and base station
  • Channel state information feedback method, precoding method, terminal device and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0067] With the continuous development of communication theory and practice, more and more wireless communication technologies have begun to appear and gradually mature. The above wireless communication technologies include but are not limited to Time Division Multiple Access (TDMA) technology, Frequency Division Multiple Access (FDMA) technology, Code Division Multiple Access (CDMA) technology, Time Division Synchronization Code Division Multiple Access (Time Division-Synchronous Code Division Multiple Access, TD-SCDMA), Orthogonal Frequency Division Multiple Access (Orthogonal FDMA, OFDMA) technology, Single Carrier Frequency Division Multiple Access (Single Carrier FDMA, SC-FDMA) technology, space Division multiple access (Space Division Multiple Access, SDMA) technology and the evolution and derivative technologies of these technologies, etc. The above-mentioned wireless communication technology has been adopted by many wireless communication standards as a radio access te...

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 provides a channel state information feedback method. The method comprises: receiving downlink symbols from a base station, wherein the downlink symbols comprise pilot frequency; obtaining a channel matrix according to the pilot frequency included in the downlink symbols; calculating a precoding matrix according to the channel matrix and a basic codebook; generating a CSI according to the precoding matrix; and sending uplink symbols to the base station, wherein the uplink symbols carry CSI. The embodiment of the invention further provides a precoding method, a terminal device and a base station. According to the technical scheme provided by the invention, each group of antennas selects at least one wave beam for weighting merging to construct a new wave beam, and the new wave beam is used to perform weighting of the group of antennas. The constructed network wave beam can more accurately simulate the real environment of the channel so as to improve the precoding accuracy.

Description

technical field [0001] The present invention relates to multi-antenna technology, in particular to a channel state information feedback method, a precoding method, terminal equipment and a base station. Background technique [0002] The emergence of multiple input multiple output (Multiple Input Multiple Output, MIMO) technology has brought revolutionary changes to wireless communication. By deploying multiple antennas on both the transmitting end device and the receiving end device, MIMO technology can simultaneously provide multiple channels independent of each other, thus increasing the data transmission rate exponentially. [0003] figure 1 It is a schematic diagram of MIMO application scenarios. figure 1 The illustrated application scenario includes a transmitting end device 102 and a receiving end device 104 . Wherein, the transmitting end device 102 may be, for example but not limited to, a base station. The receiver device 104 may be, for example but not limited ...

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): H04B7/0456H04B7/06
CPCH04B7/0456H04B7/0626H04B7/002H04B7/0469H04B7/0478H04B7/0639H04B7/0417
Inventor 武露韩玮
Owner HUAWEI TECH CO LTD
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