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Mismatching compensation device and method, and mismatching detection device

A compensation device and compensation method technology, applied in the field of mismatch processing technology, can solve the problems of sampling phase difference, time-consuming and the like

Inactive Publication Date: 2017-01-11
MSTAR SEMICON INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, since the current technology detects and compensates the frequency-related mismatch and the frequency-independent mismatch respectively (for example, the detection and compensation of the frequency-related mismatch is completed first, and then the frequency-independent mismatch is performed. detection and compensation), so the current technology not only takes a lot of time in operation, but also may suffer from some problems such as the sampling phase difference caused by non-detection

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  • Mismatching compensation device and method, and mismatching detection device
  • Mismatching compensation device and method, and mismatching detection device
  • Mismatching compensation device and method, and mismatching detection device

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Embodiment Construction

[0078] The terms used in the following explanations refer to the customary terms in the technical field. If some terms are explained or defined in this manual, the explanations of these terms shall be based on the descriptions or definitions in this manual.

[0079] The disclosure of the present invention includes devices and methods, and some components of the device may be known components individually. On the premise of not affecting the full disclosure and implementability of the device, the details of individual known components will be described in the following description Abbreviation; some steps or a combination of all steps of the method may be in the form of software and / or firmware, and may be executed by the device of the present invention or its equivalent device.

[0080] see Figure 1a , which is a schematic diagram of an embodiment of the mismatch compensation device of the present invention. The mismatch compensation device 100 of this embodiment can simultane...

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Abstract

The invention discloses a mismatching compensation device comprising a signal generator, a gain and phase compensation device, a digital to analog converter, an analog front-end circuit, a mismatching detection circuit, a frequency-dependence mismatching compensation device, and a control circuit. To be specific, the signal generator outputs a first signal and a second signal synchronously. The gain and phase compensation device processes the first signal and the second signal according to a gain parameter and a phase parameter to generate a compensation first signal and a compensation second signal. The digital to analog converter carries out digital to analog conversion on the compensation first signal and the compensation second signal to generate a first analog signal and a second analog signal. The analog front-end circuit processes the first analog signal and the second analog signal to output a combined signal. The mismatching detection circuit detects the power of the combined signal to generate a detection result. The frequency-dependence mismatching compensation device compensates at least one of the first signal and the second signal. And the control circuit sets the gain parameter and the phase parameter according to the detection result to compensate the gain and phase mismatching independence to the frequency and sets the parameter of the frequency-dependence mismatching compensation device based on the detection result so as to compensate a mismatching response dependence to the frequency.

Description

technical field [0001] The present invention relates to mismatch processing techniques, and more particularly to mismatch processing techniques that can be used to deal with in-phase and quadrature phase mismatch (IQ mismatch). Background technique [0002] Communication technologies using in-phase (in-phase) and quadrature-phase (quadrature-phase) modulation (such as Orthogonal Frequency Division Multiplexing (OFDM) communication technology) usually encounter the problem of mismatching in-phase and quadrature-phase. For this problem, the current technology will detect and compensate for the frequency-related gain and phase mismatch and the frequency-independent gain and phase mismatch respectively. The frequency-related mismatch is caused by the low-pass filter and the low-pass filter in the quadrature-phase signal path, while the frequency-independent mismatch is caused by the modulator in the in-phase signal path and the modulator in the quadrature-phase signal path. [...

Claims

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Application Information

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IPC IPC(8): H04L25/03H04L27/26
Inventor 杨子颐童泰来
Owner MSTAR SEMICON INC
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