面向数字通信系统的EDA实验教学改革与实践

Teaching Reform for EDA Experiments Based on Digital Communication Theory

EDA技术代表了当今电子设计的最新发展方向,但EDA实验教学仍然依靠市场上的EDA实验箱,这类实验箱的主要内容是简单的数字电路系统设计,功能泛而浅,不能让学生感受到EDA技术在复杂逻辑集成电路设计方面的优势。而传统的通信系统原理实验教学也局限在实验箱上,学生自主发挥的空间非常有限,常常仅能调节实验箱预留的几个电位器开关,不利于学生理解抽象的通信系统理论。本文提出的面向数字通信系统的EDA实验教学改革,创新之处在于能使学生根据数字通信中抽象的基带信号编译码、频带信号调制与解调、多路信号复用、脉冲编码调制等理论,结合EDA的编程方法加以实现。该实验教学的实践不仅使学生加深了通信原理中抽象理论的理解,也使学生对EDA技术的综合运用能力得到充分锻炼,达到事半功倍的教学效果。

EDA is standing for a new development direction in electronic design,but its experiment teaching is still mainly relies on EDA experiment boxes,which consist of simple designs for digital circuits.These contents are too general and shallow,which cannot help students to understand the advantages of EDA in large scaled IC design.Traditional communication experiment teaching is also dependent on experiment boxes,which is quite limited during experiments for students in that they can only adjust some potentiometers,and can hardly understand Abstract communication principles.Teaching reforms are proposed in this paper for EDA experiments,the innovation is that students can carry out EDA programming based on communication,such as coding and decoding of baseband signal,modulation and demodulation of frequency-banded signal,multiplexing of signals,Pulse Code Modulation（PCM）,etc..The accomplishment of this reform can not only help students deeply understand Abstract communication theories but also practice their EDA design abilities,which can achieve twice the results with half efforts.