A web-based virtual laboratory on a frequency modulation experiment

Authors:
Chi Chung Ko;B. M. Chen;Shaoyan Hu;V. Ramakrishnan;Chang Dong Cheng;Yuan Zhuang;Jianping Chen
Affiliations:
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore;-;-;-;-;-;-
Venue:
IEEE Transactions on Systems, Man, and Cybernetics, Part C: Applications and Reviews
Year:
2001

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Abstract

With the rapid proliferation of Internet technologies, accessing and operating engineering instruments remotely anytime anywhere is fast becoming a reality. This paper presents a new Web-based virtual laboratory on a frequency modulation experiment for the teaching of an undergraduate course on communication principles in the National University of Singapore (NUS). The laboratory requires only a common Web browser to access and incorporate schemes for reducing data traffic and authenticating users. It enables students to have a natural hands-on experience of using an expensive spectrum analyzer on a one-to-one basis and provides a solution for distant engineering education. The system uses a double client-server structure where access to the experiment is via two rounds of client-server processing. The virtual laboratory can be accessed at the Web site http://vlab.ee.nus.edu.sg/vlab/freqmod/index.html