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Two-stage based automatic calibration and correction method and system for repeater

A technology of automatic calibration and calibration method, applied in transmission systems, radio relay systems, active power relay systems, etc., can solve problems such as affecting production efficiency, large data volume, increasing production costs, etc., to improve production efficiency , The effect of reducing production cost and high link gain control accuracy

Active Publication Date: 2013-11-06
成都芯通软件有限公司
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Problems solved by technology

The advantage of the two-dimensional look-up table method calibration is: this method combines the piecewise linear algorithm, and the control accuracy is high; but the disadvantage is: the amount of data collected during calibration is large, N*N, which seriously affects the production efficiency and increases the production cost.

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  • Two-stage based automatic calibration and correction method and system for repeater
  • Two-stage based automatic calibration and correction method and system for repeater

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[0026] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, it should not be understood that the scope of the above subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0027] The present invention is based on two-stage repeater automatic calibration calibration method, total gain correction factor=RF gain correction factor+IF gain correction factor, i.e. g_corr=g_coff_rf+g_corr_if, wherein g_corr represents the total gain correction factor, and g_coff_rf represents radio frequency Gain correction factor, g_corr_if indicates the intermediate frequency gain correction factor.

[0028] Fix the local oscillator, move the intermediate frequency, obtain the intermediate frequency gain correction factor g_corr_if[i] of different frequency points, and then...

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Abstract

The invention discloses a two-stage based automatic calibration and correction method and system for a repeater. The method comprises the following steps: firstly, fixing intermediate frequency; moving a local oscillator to obtain radio frequency gain modifying factors of different frequency points; then fixing the local oscillator; moving the intermediate frequency to obtain intermediate frequency modifying factors of different frequency points; and finally removing mutually-affecting components of the radio frequency gain modifying factors and the intermediate frequency modifying factors to obtain a total gain modifying factor corresponding to each frequency point. In the two-stage based automatic calibration and correction method and system for the repeater, a link gain control precision is high, the data amount which is collected in a calibration mode is reduced from N*N to 2*N, the data acquisition amount is greatly reduced, the production efficiency is improved, and the production cost is lowered.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a two-stage repeater automatic calibration method and system. Background technique [0002] The radio frequency remote system of the repeater has high requirements on the control accuracy of the link gain. Due to the difference in the gain of individual components such as the main control board, power amplifier module, and cavity filter in the link, it is necessary to obtain the actual gain of the entire link through calibration. The difference from the target gain, that is, the gain correction factor, is calibrated after the whole machine enters the working state, that is, the link gain is adjusted according to the gain correction factor so that the link gain reaches the target gain. [0003] The link gain of the repeater includes two parts: RF gain and IF gain. In actual work, the two parts of the link gain cannot be physically separated, that is, the IF gain and RF gain can...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/00H04W24/04H04B7/15H04W52/30
Inventor 陈存秀
Owner 成都芯通软件有限公司
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