A method and apparatus for determining calibration information

A technology for calibrating information and signals, applied in the field of communication, can solve problems affecting calibration accuracy and errors, and achieve the effects of improving calibration accuracy, improving phase calibration accuracy, and reducing phase fitting errors

Active Publication Date: 2021-12-28
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
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Problems solved by technology

[0004] The existing phase calibration technology usually performs a phase linear fitting on all phases in the entire frequency domain to obtain the corresponding calibration coefficients; however, due to the fact that the phase-frequency characteristics of analog devices or transmission networks cannot be completely ideal, the entire frequency domain The phase is not completely linear in the bandwidth range, so it will cause certain errors, which will affect the calibration accuracy

Method used

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  • A method and apparatus for determining calibration information
  • A method and apparatus for determining calibration information
  • A method and apparatus for determining calibration information

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Embodiment Construction

[0038] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] One of the core ideas of the embodiments of the present invention is that the amplitude alignment information can be determined according to the frequency domain signal, and the frequency band of the frequency domain signal is divided into multiple sub-frequency bands, and the phase linear fitting is performed on each sub-frequency band respectively , to obtain the phase fitting information corresponding to each sub-frequency band, and then determine the calibration information according to the amplitude alignment information and phase fitting information, so as to jointly calibrate the phase and amplitude of the signal to be calibrated, thereby improving the calibration accuracy, wherein, in each sub-frequency band The phas...

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Abstract

Embodiments of the present invention provide a method and device for determining calibration information, wherein the method includes: receiving a measurement signal at a receiving end; performing channel estimation on the measurement signal to determine a frequency-domain signal; according to the frequency-domain signal, Determine amplitude alignment information; perform sliding window phase linear fitting on the frequency domain signal to obtain phase fitting information corresponding to each sliding window; determine calibration information according to the amplitude alignment information and the phase fitting information , the calibration information is used to jointly calibrate the phase and amplitude of the signal to be calibrated; the method can reduce phase fitting errors and amplitude calibration errors caused by channel abnormalities, thereby improving the accuracy of amplitude and phase calibration.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method for determining calibration information and a method and device for determining calibration information. Background technique [0002] With the rapid development of mobile communication systems (such as 4G (the 4th Generation mobile communication technology, fourth-generation mobile communication technology) system or 5G (the 5th Generation mobile communication technology, fifth-generation mobile communication technology) system), user terminals can access The mobile communication system carries out various mobile services, such as surfing the Internet, video on demand, sending and receiving emails, downloading and so on. [0003] In the communication process, the signal is often not a single frequency, but within a certain frequency range. During the transmission of a wide-band signal, the phase delay of signals of different frequencies is not constant, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/24
CPCH04L1/248H04L1/24
Inventor 章勇
Owner DATANG MOBILE COMM EQUIP CO LTD
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