High-speed digital noise source

Abstract

The invention provides a high-speed digital noise source which is obtained on the basis of an FPGA. A signal obtained by outputting a high-frequency and large-shake clock signal through an oscillator and then sampling the generated high-frequency and large-shake clock signal through a low-frequency purified clock signal is the final required noise source. The high-frequency and large-shake signal is generated on the basis of a loop composed of an odd number of not gates; meanwhile, a switching signal used for controlling the loop to be closed and opened exists, and the central oscillation frequency of the switching signal ranges from 1.5 GHz to 3 GHz. The invention further provides the redundant design of the high-speed digital noise source. The high-speed digital noise source has the advantages that the problems that a digital noise source based on the FPGA is high in power consumption and low in output rate are solved, the power consumption of the noise source is effectively controlled, the requirement for the output rate is met, and the FPGA can be prevented from large damage.

Description

technical field [0001] The invention relates to generation of a noise source, and in particular provides a method for generating a high-speed digital noise source based on FPGA. Background technique [0002] In the existing technical solutions for generating noise sources, the high-frequency noise source based on field programmable gate array (FPGA) generally uses an oscillator to output a high-frequency clock signal, and then uses a lower-frequency pure clock to process it. Samples are digitized and output. The generated high-speed digital noise source can be used to generate random numbers, and has many applications in secure communication, information security, cryptography and other fields. [0003] Among them, oscillators used to generate high-frequency clock signals are usually divided into differential oscillators and single-ended oscillators, and different oscillators have different sensitivity to different noise sources. Differential oscillators are less sensitive...

AI Technical Summary

Problems solved by technology

[0006] The present invention proposes a high-speed digital noise source, which can solve the problems of large power consumption and low output rate of FPGA-based high-speed digital noise sources