Vector signal generation module and vector signal generation method

Abstract

The invention provides a vector signal generation module and a vector signal generation method, which are characterized in that a digital baseband signal generated by calculation of a general-purpose computer provided with a GPU graphics card is transmitted to a DA signal generation board card through a Displayport interface of the GPU graphics card, digital up-conversion and digital-to-analog conversion processing are carried out, the digital baseband signal is converted into an analog intermediate frequency signal to be output, and a vector signal is generated. According to the invention, the Displayport interface of the GPU display card is used as a transmission interface of the digital vector signal, and a PCIe bus is not needed, so that the bandwidth occupation of the PCIe bus is avoided. Meanwhile, the method does not need a PCIe bridging card, so that the cost is greatly saved. According to the method, the intermediate delay of transmitting the digital vector signal generated by the CPU + GPU combined calculation to the DA board card is reduced, the consumption of PCIe resources in the transmission process is eliminated, and the transmission cost can be reduced.

Description

technical field [0001] The invention belongs to the field of microwave radio frequency signal generation, and in particular relates to a vector signal generation module and a generation method. Background technique [0002] In the fields of communication, radar, and electronic warfare, the generation of microwave radio frequency signals is a very important basic link. Under the condition of modern telecommunication technology, vector signal generation technology based on "software radio" has become the mainstream method of microwave radio frequency signal generation. [0003] The main principle of the vector signal generation technology is: use a high-performance digital processor to generate a time-domain digital signal, and send this digital signal to a digital-to-analog conversion (DA) chip, and the DA chip generates a low-frequency or intermediate-frequency microwave signal. Then, the low-frequency or intermediate-frequency signals are moved to the required frequency ba...

AI Technical Summary

Problems solved by technology

[0030] The GPU computing method can solve the problems of inflexible development of special processing methods, long development cycle, and difficulty in upgrading and iteration

However, due to the addition of PCIe bridge cards, the signal transmission link is longer, the delay is larger, and the bandwidth of the computer PCIe bus is occupied.

Images