Minimization of the BER using Brewster´s angle based polarization diversity technique for indoor Visible Light Communication system

Numerous methodologies, system models and modulation techniques are present in literatures for indoor Visible Light Communication (VLC). This paper proposed a VLC system model, for Line of Sight (LOS) and partially Non Line of Sight (NLOS) in indoor applications. The novice modulation technique based on polarization phase shift key and Brewster´s angle based polarization diversity technique (BABPDT). By introducing a transparent sheet in between the transmitter and receiver to alleviate the shadowing problem faced in VLC system. When an optical signal is incident on transparent sheet at Brewster´s angle, the signal get polarized into two signals. The polarized reflected signal and polarized transmitted signal. The visible light portion of quanta particles of electromagnetic spectrum is used to transmit information via LEDs as a transmitter and photo diode as a receiver.