Clipping Noise in Asymmetrically Clipped Optical OFDM in Visible Light Communication

Abstract

In this thesis, the impact of clipping noise on Visible light communication systems employing asymmetrically clipped optical OFDM in the presence of double-sided signal clipping is investigated. MATLAB program was used to the BER performance. The simulation compared two cases where the clipping noise is ignored and where it is present for multi-level quadrature amplitude modulation (M-QAM) schemes. The results showed that BER performance of ACO-OFDM based VLC is more severely degraded with the increase of the modulation order And the ACO-OFDM is robust to the clipping effects and it is more suitable for applications with lower radiated average optical power and zero biasing.