A real-time platform for collaborative research on Visible Light Communication

Ribeiro, Carlos; Figueiredo, Mónica; Alves, Luis Nero

http://hdl.handle.net/10400.8/13083

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Authors

Ribeiro, Carlos

Figueiredo, Mónica

Alves, Luis Nero

Abstract(s)

This paper reports the implementation and performance results of a real-time Visible Light Communication platform. The platform uses a high-level software abstraction architecture where the algorithms are developed and tested in MATLAB, using a modular architecture. With this modular approach it is very easy to add/remove blocks, making it amenable to collaboration with other groups with interest in this field, offering a real-time test bed to evaluate the performance of different modules, algorithms and optical front-ends, which is currently not available. The physical layer is based on DCO-OFDM and is implemented in a Xilinx Virtex-6 FPGA. We explore the optical front-end out-of-band bandwidth to transmit, showing the usefulness of adopting OFDM-based modulations schemes for VLC. Our system transmits at 2m over an indoor free space channel with 12MHz bandwidth, with more than 23dB gain difference, using QPSK, thus achieving 24Mbit/s with a BER smaller than the usual 3.8×10-3 limit.

Description

4th International Workshop on Optical Wireless Communications, IWOW 2015 07-08 September 2015

Keywords

VLC DCO-OFDM FPGA Real-Time OFDM Transceivers Real-time systems Bandwidth Optical transmitters Optical receivers Computer architecture

URI

http://hdl.handle.net/10400.8/13083

Citation

Figueiredo, M., Ribeiro, C. & Alves, L. (2015). A Real-Time Platform for Collaborative Research on Visible Light Communication. 4th International Workshop on Optical Wireless Communications (IWOW), pp. 112-116, doi: 10.1109/IWOW.2015.7342277.