A method for awg to generate digitally modulated signal waveform data

Abstract

The invention provides a method for generating digital modulating signal waveform data by an AWG, and aims at disclosing a digital modulating signal waveform data generation method which is capable of generating stable and low-distortion output signals, keeping the continuity and integrity of signal waveform files and not causing phase jump during cyclic reading. The method is realized through the following steps of: selecting a combination of a carrier center frequency f0, a symbol rate Rs and a code element number L, which satisfy any waveform parameter at the same time; when a sampling rate fs of the waveform files satisfies a Nyquist sampling rate theorem and is not higher than a DAC highest working frequency and the sizes of the a waveform files satisfy a storage capacity, searching an optimum sampling total time length Ttotal and fs to ensure that a generated actual carrier center frequency f'0 approaches to f0 in the aspect of waveform; and cyclically searching a sampling total time, the sampling rate and a finely tuned carrier center frequency parameter, solving an optimum waveform parameter, and generating signal waveform files which are connected end to end and do not cause phase jump during cyclic reading.

Description

technical field [0001] The invention relates to a device that can be widely used in the testing of various complete machines, systems, components and components, as various simulation signals or excitation signal generators or signal sources for short, for arbitrary waveform generator AWG to generate digital modulation signal waveforms The data method, more specifically, provides an optimal design method for the generation of digitally modulated signal waveform files of arbitrary wave generators. technical background [0002] In the test system, the excitation signal source is used as the input device and does not directly test any parameters. Its function is to provide excitation signals for the system to be tested, or to generate simulated signals, which simulate the signals required by electronic equipment that have the same characteristics as the actual environment, and whose performance indicators are closely related to the object to be tested. In the electronic experi...

AI Technical Summary

Problems solved by technology

Digital modulation signal is a commonly used signal in the fields of communication, data transmission, etc., but the current literature research work does not involve the generation of digital modulation signals by arbitrary waveform generators.

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