Sequence-based multi-format signal modulation information control method

Abstract

The invention provides a sequence-based multi-format signal modulation information control method, which belongs to the field of communication, and comprises the following steps of: storing modulation information of a signal to be modulated in a sequence flow mode, integrating the modulation information in the sequence flow and a DDS (Direct Digital Synthesizer) in an FPGA (Field Programmable Gate Array), and realizing simultaneous generation of multi-format modulation signals in a digital mode; and in the sequence flow mode, the infinite loop playing of the sequence flow is realized by adopting a double-RAM alternate reading and writing mode. The method can be widely applied to electronic reconnaissance and countermeasure and complex electromagnetic environment construction.

Description

technical field [0001] The invention belongs to the communication field, and in particular relates to a sequence-based control method for multi-format signal modulation information. Background technique [0002] With the development of modern communication technology, new changes have appeared in the characteristics of electronic signals, and a new modulation format has been developed. Its technical characteristics include analog modulation, digital modulation, fast transition, signal simulation, custom signal style and signal style storage, etc. , to meet the needs of testing in modern communication technology. In order to simultaneously simulate the waveforms of signals with multiple modulation formats, people often use custom waveforms to calculate and simulate the required complex modulation signals on the computer in advance, and then download them to the DDR memory stick through interfaces such as PCIe, and then It is generated by means of FPGA+DAC chips. The disadva...

AI Technical Summary

Problems solved by technology

The disadvantage of the existing technology is that it requires a computer to perform complex synthesis and calculation. For application scenarios with fixed modulation formats and different modulation depths, the waveform style is relatively fixed, and it is very complicated to modify.

[0003] In a complex electromagnetic environment, in order to test the demodulation capability of the demodulation equipment, it is necessary to simulate modulation signals in multiple formats at the same time, but traditional signal sources can only generate a single analog modulation signal or digital modulation signal at the same time, and cannot Simultaneously simulate modulation signals in multiple formats

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