Method and system for in-band fluctuation calibration of repeater

Abstract

The invention belongs to the technical field of the repeater, and discloses a repeater passband fluctuation calibration method and system. The method comprises the following steps: producing a baseband signal through a digital processing unit of the repeater, wherein a frequency conversion transceiving unit performs up-conversion, gain amplification and filtering processing on the baseband signalto obtain a target band signal, the target band signal is coupled through a feedback unit to obtain a loop signal; the frequency conversion transceiving unit performs down-conversion sampling on the loop signal to obtain a feedback signal; the digital processing unit transmits the feedback signal to a power computation unit, the power computation unit selects a center frequency point and multiplesampling frequency points according to the bandwidth of the feedback signal, and respectively computes the power difference of multiple sampling frequency points and the center frequency points; and the digital processing unit calibrates the power of multiple sampling frequency points according to the power difference. The problems that the testing cost is high and the time consuming is long sincethe calibration of the passband fluctuation of the repeater needs to adopt the instrument except the equipment in the prior art are solved.

Description

technical field [0001] The invention relates to the technical field of repeaters, in particular to a method and system for calibrating in-band fluctuations of repeaters. Background technique [0002] The repeater plays an important role in wireless coverage and is widely used. It includes digital processing and analog frequency conversion circuits. Within a certain bandwidth, there will be gain deviations at different frequency points. In order to keep this in-band fluctuation Within the required range, manual calibration of the device is required. In the initial laboratory environment, it is necessary to access the signal source, spectrum analyzer to test the band wave on the link, or manually write commands to send test signals, and perform digital filters with analog circuits according to the deviation of test signals at different frequency points. Repeated adjustment and testing, the workload is heavy and the effect is not good. Contents of the invention [0003] The...

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Problems solved by technology

[0003] The embodiment of the present application provides a method and system for calibrating the in-band fluctuation of the repeater, which solves the need to use instruments other than the equipment itself for the calibration of the in-band fluctuation of the repeater in the prior art, and the test cost is high and time-consuming The problem

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