"ONLINE EXPERIMENTS IN DIGITAL COMMUNICATIONS"

Abstract

"The purpose of this project is to design and produce interactive online experiments in digital communications. The experiments will serve as study aids for students of digital communications which include Eye diagrams, constellation plots, BER-SNR plots and digital modulation schemes with data inputted by them. There is also a section for self-test questions where students can test their knowledge of digital communications. The digital communications experiments presented were designed using Mathworks MATLAB®. The scripts, known as m-scripts, were tested and built in MATLAB® Java Builder to produce Java component jar file. The Java component file was compiled together with a Java servlet written to access the methods inside the Java component file to produce Java classes. In order for the experiment to function in a webpage, a HTML page, a JSP page and a web.xml, which is a Web descriptor file, were written specifically for the Java classes’ interfaces. The experiments simulation results were compared with theories and were verified correctly designed and implemented successfully. It is concluded that developing such a project is advantages where digital communication theories and techniques can be shared over the Internet, promoting portability and also reducing printed materials thereby promoting green environment. In addition, students or users do not have to go through manual calculations for certain equations or formulas in digital communications. "