Summary
IEICE Information and Communication Technology Forum
2015
Session Number:SESSION8
Session:
Number:SESSION8-3
A Real-time N-Channel PCM Transmission System Test Bed
Angham Sabagh, Bamidele Adebisi, Sunday Cookey Ekpo,
pp.-
Publication Date:2015-08-31
Online ISSN:2188-5079
DOI:10.34385/proc.22.SESSION8-3
Summary:
Virtual instruments (VIs) and circuit-emulating graphical programming have enabled unprecedented teaching, measurements/instrumentation and prototyping possibilities across multidisciplinary applications. A task to develop a virtual instrument experiment platform for the pulse code modulation (PCM) technique has been implemented using the NI LabVIEW FPGA. The software simulation results were validated by interfacing the VI platform with a hardware carrying real-time signals. A sweep of sampling rate and bit depth was carried out to investigate the fidelity of the recovered signal vis-à-vis the original analogue input. Furthermore, the experimental setup involved deploying the NI FPGA digital electronics board and DAQ hardware. The integrated embedded system enabled our students to investigate and analyse the performance and validity of different transmitted signals and the transmission media. This novel real-time communication system was developed for the first time for the communication engineering course unit and the students found it very interesting implementing a VI for the PCM scheme and practically verifying their findings. This experimental learning and teaching (L&T) platform can be extended to accomplish adaptive and real-time multiplexed multiple-channel PCM telephone system.