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

Antenna calibration method and device

An antenna calibration and linear fitting technology, applied in the field of communication, can solve problems such as errors

Active Publication Date: 2020-03-10
DATANG MOBILE COMM EQUIP CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This conventional calibration method only processes a single frequency point. In outdoor formal work scenarios or low signal-to-noise ratio scenarios, the frequency domain response result of a single frequency point will inevitably produce a huge error as the earliest calibration result.

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
  • Antenna calibration method and device
  • Antenna calibration method and device
  • Antenna calibration method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Embodiments of the present application provide an antenna calibration method and device, so as to improve the accuracy of antenna calibration.

[0038] The core principles of traditional antenna calibration are:

[0039] (1) At a lower frequency, use an orthogonal sequence to obtain antenna calibration coefficients

[0040] Divide the effective signal bandwidth into multiple standard physical resource block (PRB) bandwidths (for example, the long-term evolution (Long Term Evolution, LTE) of universal mobile communication technology 20MHz contains 100 PRBs, 5G 100MHz 30KHz subcarriers , may contain 250 or 272 PRBs). Then divide each PRB into sub-bands; select a part of sub-bands in each PRB to be allocated to the antenna to be calibrated sequentially, and reserve a part of the signal bandwidth for noise estimation.

[0041] When sending calibration, each antenna sends a standard orthogonal sequence, which is uniformly received by the calibration antenna, and the calibr...

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 an antenna calibration method and an antenna calibration device, which are used for improving the accuracy of antenna calibration. The antenna calibration method provided by the embodiment of the invention comprises the following steps: for each frequency point, determining a frequency domain calibration result of antenna calibration of the frequency point, and determininga phase and an amplitude corresponding to the frequency domain calibration result; performing least square fitting and interpolation on the phases of all the frequency points, and finally determininga calibration phase factor of the subcarrier of each frequency point; and after the phases of all the frequency points are subjected to linear fitting, interpolating the phase of the subcarrier between any two adjacent frequency points according to the phases of the two adjacent fitted frequency points.

Description

technical field [0001] The present application relates to the communication field, and in particular to an antenna calibration (Antenna Calibrate, AC) method and device. Background technique [0002] In the prior art, due to antenna production process problems among large-scale antennas, the calibration network of large-scale antennas cannot ensure that the signal-to-noise ratio of each antenna meets the signal-to-noise ratio required by the traditional 8-antenna calibration under the existing technology. noise ratio. [0003] The existing large-scale antenna calibration system is to estimate the frequency domain response of each transmitting and receiving radio frequency channel, and perform amplitude and phase compensation on the radio frequency channel. The purpose is to ensure the consistency of the frequency domain amplitude and phase of each transmitting and receiving radio frequency channel. Its output is the frequency domain calibration factor of the receive channel...

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): H04B17/12H04B17/21
CPCH04B17/12H04B17/21
Inventor 李庆华倪立华章勇
Owner DATANG MOBILE COMM EQUIP CO LTD