Development Of Virtual Experiment System Of Telecommunication Major Based On LabVIEW

The Communication Virtual Experiment System is fefferent from those traditional experiment laborary; it has no bound on time or location. It makes data sharing and information exchanging very convenient. Teachers, as well as students, can study in the virtual experiment system freely and repeatedly. Virtual experiment system can be put on website by Internet technology, provides environmental and technology support for educational revolution and remote education, and gives students great study opportunity。 The virtual experiment system uses Browser/Server structure, and chooses LabVIEW as system development tool which develops a series of experimental virtual instruments, including Signal Sampling and Recovery experiment Module, Signal FFT spectral analysis experiment Module, Signal AMI line encoding and decoding Experiment Module,2DPSK Experiment Module, MASK Experiment Module. We discuss the functions of components in front panel and program block. Users can check out the experimental principals on front panels, or change the experimental coming out by change the peremeters. By observing the changes of time-domain waveform and frequency-domain waveform, we can analysis the experimental operation. The virtual experiment system is easy to operate and the results are intuitionistic.There are two ways we adopt to reslize the network publish, one is publish with Web tool in LabVIEW, the other is using HTML code. Compare the two ways, choose the second way for it better fits the demand in the system. Set system configuration on both IIS and brower, then test in campus network, Local Area Network and Wide Area Network. The result show that the system is available and it basicly fulfill the expectations.