Unlock instant, AI-driven research and patent intelligence for your innovation.

Doppler frequency offset estimation method and device based on millimeter wave MIMO system

A Doppler frequency offset, millimeter wave technology, applied in the field of Doppler frequency offset estimation

Active Publication Date: 2017-08-18
BEIJING UNIV OF POSTS & TELECOMM
View PDF2 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Iterative frequency offset estimation method for flat fading, only for flat fading channel scenarios

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
  • Doppler frequency offset estimation method and device based on millimeter wave MIMO system
  • Doppler frequency offset estimation method and device based on millimeter wave MIMO system
  • Doppler frequency offset estimation method and device based on millimeter wave MIMO system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0059] 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 making creative efforts belong to the protection scope of the present invention.

[0060] In order to estimate the Doppler frequency offset of the millimeter-wave MIMO system, embodiments of the present invention provide a method and device for estimating the Doppler frequency offset based on the millimeter-wave MIMO system, which will be described in detail below.

[0061] It should be noted that the beamforming structure of the mmWave MIMO system can be as follows figure 1 As shown in , assuming that the frequency band occupied by the mill...

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 Doppler frequency offset estimation method and device based on a millimeter wave MIMO system. The method comprises the steps of establishing a maximum likelihood estimation model for Doppler frequency offset according to signals received by a receiving end in the millimeter wave MIMO system; determining a solution expression of the Doppler frequency offset according to the maximum likelihood estimation model; and estimating the Doppler frequency offset according to the solution expression. Compared with the prior art, the embodiment of the invention has the advantage that the Doppler frequency offset of the millimeter wave MIMO system can be estimated.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a Doppler frequency offset estimation method and device based on a millimeter wave MIMO system. Background technique [0002] The channel involved in the wireless communication system is usually a multipath time-varying fading channel, and the amplitude and phase of the received signal will change with time. The changing speed of the fading channel depends on the Doppler frequency deviation of the channel. The larger the Doppler frequency deviation, the faster the channel changes. This requires real-time estimation of the Doppler frequency offset, and dynamic adjustment of system parameters according to the Doppler frequency offset to obtain optimal receiving performance. Wherein, the Doppler frequency deviation refers to a frequency change caused by movement of the receiving end or the mobile end. The estimation of Doppler frequency offset is widely used...

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): H04L25/02H04L27/26H04B7/0413
CPCH04B7/0413H04L25/022H04L27/2647H04L25/0222
Inventor 张奇勋高超郑婷婷尉志青黄赛
Owner BEIJING UNIV OF POSTS & TELECOMM