A WAVELET BASED OPTICAL WIRELESS SYSTEM BASED ON OOK MODULATION-AN OVERVIEW

Abstract: High-speed wireless optical communication links have become more popular for personal mobile applications. This is a consequence of the increasing demand from the personal information service boom. Compared to the radio frequency domain, optical wireless communication offers much higher speeds and bit rates per unit power consumption. This work presents the use of wavelet transform and artificial neural network as elements of optical wireless communication receiver. Indoor wireless links usually have to operate in presence of noise generated by light sources. The work uses the MATLAB tool for providing effects of Inter-symbol Interference and light interference on this receiver. In this, modulation technique OOK is used. The performance of this system is analyzed based on BER value.

Keywords: Artificial neural network (ANN), optical wireless communication (OWC), wavelet transform, survey papers.