Contents I. Introduction
VLC is well known for indoor communication in optical wireless. It uses LEDs lighting for communication between the transmitter and receiver. The dimming property of LEDs can be modulated properly for better transmission and reception of data. Not only the modulation scheme but also the line coding and the choice of equalizers also improve the system performance [1]. VLC for data communication growing faster since it uses for data transmission and illumination. Also VLC uses the visible light spectrum ranging between 400 and 800 THz (780-375nm). It mainly used for indoor communication so the spectrum is unregulated and license-free and more specifically there is no interference with radio frequency (RF) systems. To improve the performance of the VLC we are going for spatial multiplexing [2]. Hence MIMO VLC gives a better performance for the visible light communications [3]. But there is a tradeoff between the BER performance and capacity of the MIMO system. For higher order MIMO BER performance decrease. This paper discussed the BER performance of a MIMO VLC system using different equalizer configuration. As the technology demands we are going for the improvements in the system.
