Optical FBMC Signals using Frame Repetition for Indoor Wireless Communication System

Abstract

Light emitting diode (LED) nonlinear distortions have a significant influence on the performance of various optical multicarrier models for visible light communication systems. For the first time, Flip-FBMC based frame repetition model is proposed to minimize the impact of intrinsic imaginary interference (IMI) and, metric of clipping distortion for high power with interference approximation method (IAM) preamble. Besides, due to the optical multicarrier signals are forcibly clipped at the LED maximum permissible voltage, the first theoretical analysis is presented to mitigate the induced IMI outside the first order neighbor zone that cannot be covered using IAM. Moreover, PHYDYAS profile through the proposed design represents as a viable candidate to cope with the restricted dynamic range of the LED. Thereby, based on the realistic-experimental parameters, the proposed model offers a superior performance gain to Flip-CP-OFDM signal.