Abstract
Current research in wireless communication undoubtedly points towards the tremendous advantages of using visible light as a spectrum for significantly boosting the capacities and capabilities of communication systems. The intensity of light can be rapidly modulated to obtain a communication scheme which can transport much larger volumes of data at higher rates and lesser latency compared to current radio frequency methods. In this paper, we have developed two novel filter bank based multicarrier techniques for communication using visible light. We propose a new signal design that employs pulse shaping with square root raised cosine filtering and frequency translation to generate orthogonal multicarrier signals. Based on this, we propose a filter bank modulation technique for multiple-input-multiple-output visible light communication. Further, we develop another filter bank modulation method using spatial indexing which further improves the data rate and spectral efficiency. The advantages of the proposed methods are thoroughly investigated through exhaustive simulation studies. The methods are found to yield very good bit error rate performance and high data rates.