Diseño e implementación de un modulador y un demodulador SSK (Space Shify Keying) para comunicación por luz visible (VLC) utilizando la Fpga (Fiel Programmable Gate Array) CYCLONE III de Altera.

Abstract

In this paper, we performed the design, simulation and implementation of a modulator and demodulator SSK (Space Shift Keying) for VLC (Visible Ligth Communications). Initially we investigated optical communications and primarily systems modulations MISO (Multiple Input Single Output). Then we did the design and simulation in DSP Builder software. MISO system was implemented which consists of four transmitters and one receiver, the conditions are: only one transmitter is active at any instant of time and the rest remain inactive, for which was performed encoding bits, the receiver must recover the transmitted data decoding bits. The implementation was done on the card FPGA (Field Programmable Gate Array) Cyclone III. Performance tests were conducted by transmitting a random bit pattern at a rate of 10 MHz, for which was used a guided with which it was possible to test the operation of the transmitter and receiver, the results were displayed on the oscilloscope and observed transmission that provides a 800 ns delay.