LabVIEW based Virtual Instrument to Acquire Real Time Signals for implementing Advanced Communication Techniques

Authors:

Dipali Bansal (Manav Rachna International University, Faridabad)

Himani (Manav Rachna International University, Faridabad)

Keywords: Communication technique, LabVIEW, Real time acquisition, Time division multiplexing, Frequency division multiplexing, Virtual Instrument.

Abstract:

Advanced analysis ability of LabVIEW software for simulating various applications of communication systems has become a potential area for research. Real time acquisition is also made possible through the use of its proprietary Data Aquisition unit. This however, adds to the cost of the entire arrangement and makes it more cumbersome. An attempt has been made in this work to develop a virtual instrument to acquire real time signals in LabVIEW without the need of its Data acquisition unit to implement Time Division Multiplexing and Frequency Division Multiplexing. Two function generators are used to provide the real time input sinusoidal signals and this data is then fed through a dual channel jack connected at the sound port of the computer. LabVIEW acquires the signals appearing at this port through its 'Acquire-sound' block. The results obtained clearly shows Time and Frequency division multiplexing of the real time acquired signals. Other advanced communication techniques can also be implemented in real time using this arrangement.