Optical Wireless Communications Adopting Delay-Tolerant Repetition-Coding With Orthogonal-Filters and On-Demand Equalization

Abstract

Transmitter diversity schemes, such as repetition coding (RC), can tackle the optical channel blockage issue in high-speed line-of-sight link based optical wireless communication (OWC) systems, and channel synchronization is required to realize the benefit. In this article, an orthogonal-filters-based repetition coding (OF-RC) transmitter diversity scheme with on-demand equalization is proposed to address time delays amongst multiple optical wireless channels in the indoor OWC systems. The OF is used for the separation and recovery of the overlapped multipath signals from the single received data stream, and hence, the proposed novel OF-RC scheme can relax the channel synchronization require..