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

Code book selection method and apparatus capable of resisting feedback error

A technology for feedback error and selection device, applied in the field of wireless communication transmission system optimization, can solve problems such as transmission error, codeword sequence number feedback error, current channel mismatch, etc., to achieve the effect of ensuring transmission performance

Active Publication Date: 2009-07-01
HUAWEI TECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the process of realizing the feedback of the above-mentioned quantized beamforming vectors, the inventors found at least the following problems in the prior art: in the quantized beamforming system, the beams used by the transmitting end are fed back by the receiving end in the form of codeword serial numbers back
However, in the feedback process, the problem of codeword serial number feedback error often occurs, that is, the serial number of codeword A fed back by the receiving end, but an error occurs during the transmission process, causing the sending end to receive the serial number of codeword B
If the difference between codeword B and codeword A is large, the beam used by the sending end will not match the current channel, and the performance of the system will deteriorate

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
  • Code book selection method and apparatus capable of resisting feedback error
  • Code book selection method and apparatus capable of resisting feedback error
  • Code book selection method and apparatus capable of resisting feedback error

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] In order to solve the problem that the beamforming system shared by the transmitting end and the receiving end in the prior art will cause the beam used by the transmitting end to not match the current channel, and the performance of the system will deteriorate. Embodiments of the present invention provide an anti- The method for selecting a codebook for feedback errors will be described in detail below in conjunction with the accompanying drawings and embodiments of the embodiments of the present invention.

[0024] The anti-feedback error codebook selection method provided by the embodiment of the present invention, the codebook includes: at least two codewords, and a sequence number corresponding to each codeword; the method flow is as follows image 3 shown, including:

[0025] 301. Compiling a codebook of at least two correspondences between codewords and sequence numbers.

[0026] The codebook includes: at least two codewords, serial numbers equal to the number o...

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 codebook selection method capable of preventing feedback error and a device thereof, which belong to the field of wireless communication and solve the problem that the prior codebook is liable to result in the mismatching between the beam used at the transmitting terminal and the current channel and the performance deterioration of the system. The embodiment of the invention provides a codebook selection method. The codebook comprises at least two code words and serial numbers corresponding to the at least two code words respectively. The method comprises the following steps: compiling codebooks of at least two kinds of relationship between code word and serial number; obtaining the transmission error parameter values of each codebook; and employing the codebook having the minimal transmission error parameter value as the common codebook shared by the signal transmitting terminal and the signal receiving terminal. The codebook selection method and the codebook selection device are applied to various antenna systems.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method and device for optimizing a wireless communication transmission system. Background technique [0002] Among various multi-antenna technologies in the wireless communication field, the beamforming technology is simple to implement and can obtain a large signal-to-noise ratio gain and diversity gain, so it is widely used. In the beamforming system, the beam used by the transmitting end is determined according to channel state information (CSI, channel state information). However, in many cases, such as in a frequency division duplex (FDD, frequency division duplex) system, the transmitting end cannot directly obtain the CSI. At this time, the CSI is firstly quantized by the receiving end to determine a matching beam, and then the beam is transmitted to the sending end through a low-rate feedback channel. [0003] figure 1 Block diagram of the forward link for a qua...

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): H04B7/06H04B7/08H04B1/707
Inventor 李元杰
Owner HUAWEI TECH CO LTD
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More