Kalman Filtering for VLC Channel Estimation of ACO-OFDM Systems

Abstract

A Kalman filter (KF) is employed for estimating a VLC channel. Two modulation techniques; asymmetrically clipped optical-orthogonal frequency-division multiplexing (ACO-OFDM) and direct current optical-orthogonal frequency-division multiplexing (DCO-OFDM) are applied. The results show that KF estimator outperforms other traditional estimators for both modulation techniques.