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Compensation value acquisition method, device and computer equipment for iq mismatch and carrier leakage

A carrier leakage and compensation value technology, applied in the field of communication, can solve problems such as complex calculations, and achieve the effect of low computational complexity and high applicability

Active Publication Date: 2022-07-19
ALLWINNER TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, these methods suffer from computationally complex

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  • Compensation value acquisition method, device and computer equipment for iq mismatch and carrier leakage
  • Compensation value acquisition method, device and computer equipment for iq mismatch and carrier leakage
  • Compensation value acquisition method, device and computer equipment for iq mismatch and carrier leakage

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Embodiment Construction

[0066] In order to make the objectives, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

[0067] The method for obtaining compensation values ​​for IQ mismatch and carrier leakage provided by the embodiments of the present application can be applied to a system in which carrier leakage and IQ mismatch problems exist in communication technologies. The method for obtaining the compensation value of IQ mismatch and carrier leakage is applied to such as figure 1 in the calibration path shown. The calibration path includes a signal generation device, a target compensation parameter pre-compensation device, a digital-to-analog converter, a first low-pass filter, a mixer, ...

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Abstract

The present application relates to a method, device, and computer equipment for obtaining compensation values ​​for IQ mismatch and carrier leakage. The method obtains initial values ​​of target compensation parameters. According to the first power value obtained from the transmitted signal, the first updated maximum power value and the first updated minimum power value are obtained, and the first update iteration point is determined. It is judged whether the preset evaluation criteria are met, and if so, the iteration conditions are updated, and the second update iteration point is determined. By acquiring the power value of the second update iteration point, the second updated maximum power value and the second updated minimum power value are determined. Taking the second updated maximum power value as the initial maximum power value, taking the second updated minimum power value as the initial minimum power value, and taking the number of times of updating searches as the number of initial searches, and repeating the above update and judgment operations until the preset termination condition is met. The method provided by the embodiments of the present application has relatively low complexity.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular, to a method, apparatus, and computer equipment for obtaining compensation values ​​for IQ mismatch and carrier leakage. Background technique [0002] In communication technology, there are usually problems such as carrier leakage and IQ mismatch, which will seriously affect the transmission of signals in the communication process. Taking a transmitter as an example, the DC offset of the I channel and Q channel of the baseband signal will cause carrier leakage, which will reduce the signal-to-noise ratio of the transmitted signal. The gains of the I channel and Q channel of the baseband filter, frequency converter and other devices in the transmitter cannot be strictly equal, and the phase difference cannot be guaranteed to be orthogonal. In addition to the deviation of the process, IQ mismatch will occur, which will cause the transmitter to have a certain siz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/04G06F17/10G06F7/58
CPCH04B1/0475G06F17/10G06F7/588
Inventor 樊凯潘攀鲁宏涛杨晓雷吕本强崔朋旭
Owner ALLWINNER TECH CO LTD