An Advanced Digital Circuit Experiment System Based On FPGA

The 21st century is an era of rapid development of information digitization.Among them,communication technology and electronic information technology,as a core industry,are constantly updating technology and moving forward.Experimental courses are very important in the process of cultivating practical talents.The traditional experimental course relies on the experiment box for teaching.In order to solve the drawbacks of the traditional experiment box,such as fixed projects,single function and low versatility,this paper designs an advanced digital circuit experiment system based on FPGA,which combines the Signal and System?Digital Signal Processing?Communication Theory?Communication Electronic Circuits?Digital Circuits and EDA courses,this system can meet the learning needs of both freshmen and seniors and graduate students(including verification and design experiments).The experimental content and design of multiple courses are completed on the system at the same time,which greatly saves resources and costs,and provides hardware conditions for more demanding of researching and designing.In this paper,a general-purpose comprehensive experimental platform is realized by FPGA,and the experiment is softwareized and digitized,which is convenient for students to understand and practice.In this paper,the DDS technology is used to realize the arbitrary waveform generator as the input of the experiment.The DDS technology is used to generate the modulation signals such as ASK,FSK,PSK,QPSK,MSK,QAM,etc.,and complete the multi-system modulation and demodulation,and realize the Convolution of two signals,digital filter and other related courses in the FPGA.This paper first introduces the research background of the subject and the involved experimental content.According to the introduction of the experimental principles,design the structure of the system.Then,according to the requirements of different experimental modules,select a proper FPGA chip,give the peripheral circuit configuration,and design the hardware scheme.Finally,realize and simulate the FPGA design of the system,and the test the system.Through actual operation and testing,functions and technical indicators meet the requirements.