Method, system and device for realizing local oscillator leakage calibration based on slope, processor and computer readable storage medium thereof

A local oscillator leakage and processor technology, applied in the transmission system, transmitter monitoring, electrical components, etc., can solve the problems of long calibration process, slow efficiency, uncertain I and Q component values, etc., to shorten the calibration time, Reduced number of measurements and high calibration efficiency

Active Publication Date: 2021-06-18
TRANSCOM INSTR
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  • Abstract
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Problems solved by technology

Since the offset value can only be modified by one unit each time, and the local oscillator leakage power value must be measured, but at the same time,

Method used

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  • Method, system and device for realizing local oscillator leakage calibration based on slope, processor and computer readable storage medium thereof
  • Method, system and device for realizing local oscillator leakage calibration based on slope, processor and computer readable storage medium thereof
  • Method, system and device for realizing local oscillator leakage calibration based on slope, processor and computer readable storage medium thereof

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Embodiment Construction

[0054] In order to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.

[0055] The method for realizing local oscillator leakage calibration based on the slope of the present invention includes the following steps:

[0056] (1) Randomly select the initial point, set the step value, and measure the local oscillator leakage;

[0057] (2) Carry out the cycle of the I component and the Q component in large steps through the first layer of circulation, judge according to the slope value K of two adjacent points, and determine the rough interval range where the lowest point of the leakage power of the local oscillator is located;

[0058] (2.1) Select the (0,0) point as the initial point, and carry out the circulation of the I component and the Q component with the step value;

[0059] (2.2) Calculate the slope value K of two adjacent points;

[0060] (2.3) Judge whether the value ...

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Abstract

The invention relates to a method for realizing local oscillator leakage calibration based on slope. The method comprises the steps of randomly selecting an initial point, setting a stepping value and measuring local oscillator leakage. Circulation of an I component and a Q component is carried out in a large step through a first layer of circulation, and a rough interval range where the lowest point of local oscillator leakage power is located is determined; through second-layer circulation, circulation is carried out in a small step mode, and the power lowest point obtained through measurement is recorded; and through a third layer of circulation, dimension value offset is carried out on the I component and the Q component respectively, the value of the lowest point is recorded, and the I component and the Q component with the minimum local oscillator leakage power value are obtained. The invention also relates to a corresponding system, device, processor and computer readable storage medium. According to the method, the system and the device for realizing local oscillator leakage calibration based on the slope, the processor and the computer readable storage medium thereof, compared with I and Q changes of one dimension, the measurement times of local oscillator leakage calibration are greatly reduced, so that the required calibration time is shortened, and the calibration efficiency is higher. According to the invention, after the I component and the Q component are respectively adjusted to the lowest point, the I component and the Q component are respectively adjusted, and the numerical value is changed.

Description

technical field [0001] The present invention relates to the technical field of research and development of wireless communication equipment, in particular to the technical field of local oscillator leakage problems of wireless communication transmitters, and specifically refers to a method, system, device, processor and computer-readable storage for calibration of local oscillator leakage based on slope medium. Background technique [0002] With the development of communication technology, people have higher and higher requirements for data rate. Transmitters based on IQ quadrature modulation, commonly known as direct conversion transmitters, can theoretically double the bandwidth and significantly increase the communication rate. In the direct conversion transmitter, the baseband generates two orthogonal I-channel and Q-channel data, which are multiplied and superimposed by the digital-to-analog converter DAC and the two orthogonal local oscillator signals for transmission...

Claims

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Application Information

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IPC IPC(8): H04B17/11H04B1/525
CPCH04B17/11H04B1/525
Inventor 江文冲解建红
Owner TRANSCOM INSTR
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