DESIGN OF SYSTEM-ON-CHIP FOR OFDM-BASED VISIBLE LIGHT COMMUNICATION

• Main Author: SETIAWAN - NIM: 23216309 , ERWIN
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/26983
• Institution: Institut Teknologi Bandung

<p align="justify">Visible Light Communication (VLC) is an in-door wireless communication which utilizes visible light as the transmission medium. The light source for VLC comes from an LED. Nowadays, LEDs are commonly used in our daily life. With VLC technology, the illumination function and the data communication function can be combined in one device. <br /> <br /> In this research, a System-on-Chip (SoC) architecture for VLC is proposed. For the VLC part, several IP cores are designed to implement VLC PHY layer based on OFDM modulation. The IP cores are designed with AXI4 bus standard, so it supports the reuse methodology which is commonly used in SoC design process. The IP cores that are designed from scratch are modulator, preamble generator, synchronizer, and demodulator, while the reused IP cores are Reed-Solomon encoder/decoder and IFFT/FFT. System integration is done by connecting the IP cores to the ARM Cortex-A9 processor, so the IP cores can be accessed from the software that runs on top of Ubuntu 16.04 based Linux OS. This integration is carried out in the Xilinx Zynq-7000 All Programmable SoC. <br /> <br /> From the evaluations with the integration of AFE transmitter and AFE receiver, an average BER of 7.693E-5, 1.495E-3, and 6.578E-3 are obtained for BPSK, QPSK, and QAM-16 modulations, respetively. With the limitation of AFE bandwidth (100 kHz), an average data rate of 14.4 kbps, 33.6 kbps, and 71.9 kbps are obtained for BPSK, QPSK, and QAM-16 modulations, respectively. <p align="justify"> <br />