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

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...

AI Technical Summary

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, the target I and Q component values ​​of each frequency point are uncertain and random, which makes the calibration process take a long time , very slow

Images