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Signal calibration method and apparatus thereof, and signal processing system

A calibration method and signal technology, which is applied in the field of signal processing, can solve problems such as insufficient calibration algorithms, insufficient functions, and inability to achieve convergence, so as to achieve the effect of perfect signal calibration function, simple and high calibration accuracy

Active Publication Date: 2017-07-07
LEADCORE TECH +1
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  • Claims
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Problems solved by technology

[0004] However, during the process of signal calibration, the inventor found that at least the following problems existed in the prior art: the calibration method performed through the digital calibration interface in the existing calibration method is usually not perfect in function and the calibration algorithm is not optimized enough to achieve fast convergence and high calibration accuracy

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  • Signal calibration method and apparatus thereof, and signal processing system
  • Signal calibration method and apparatus thereof, and signal processing system
  • Signal calibration method and apparatus thereof, and signal processing system

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0036] A first embodiment of the present invention relates to a signal calibration method. The specific process is as figure 2 shown. The method includes:

[0037] Step 101: Obtain the transmission signal power group output by the transmitter and the corresponding offset calibration signal group; the offset calibration s...

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Abstract

The invention relates to the signal processing technology field and discloses a signal calibration method and an apparatus thereof, and a signal processing system. The method is characterized by acquiring an emission signal power group output by a transmitter and a corresponding disorder calibration signal group, wherein the disorder calibration signal group includes a mismatched calibration signal group of two path signals I / Q of orthogonal modulation and a direct current disorder calibration signal group; according to the emission signal power group output by the transmitter and the corresponding disorder calibration signal group, determining a disorder direction; and according to the disorder direction, updating a calibration matrix vector group so that digital calibration is performed on a transmitter input signal. A signal calibration function is improved, and rapid convergence and high calibration precision are realized.

Description

technical field [0001] The present invention relates to the technical field of signal processing, in particular to a signal calibration method, device and signal processing system. Background technique [0002] In the prior art, 3G and 4G wireless communications have higher and higher requirements on the bandwidth of radio frequency transmitters, and zero-IF transmitters have become mainstream. However, due to the inherent properties of integrated circuits, the incomplete symmetry of the layout and routing, and process deviations, there are problems of I / Q gain and phase imbalance and DC offset of the two signals of quadrature modulation, which are reflected in image suppression and carrier waves. Inhibition of performance degradation. When the main signal is symmetrical about the center frequency point, the mirror image and the main signal will overlap together, deteriorating the transmission vector error magnitude (ErrorVector Magnitud, referred to as EVM); when the main ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/11
CPCH04B17/11
Inventor 任腾龙
Owner LEADCORE TECH
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