期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2016
卷号：91
期号：1
出版社：Journal of Theoretical and Applied
摘要：This paper focus on performance of a new modulation approach which is known as catenated orthogonal frequency division multiplexing (C-OFDM) integration with visible light communication (VLC) system suggested for uplink LiFi system. OFDM based network modulation and demodulation have a huge comparative advantages over other modulation including reduced frequency selectivity fading, provision for a higher number of subcarriers, high data rate and higher spectrum efficiency. By using simulation, the proposed system based on novel C-OFDM gives a good bit error rate (BER) performance (10-9 and below) with 16-quadrature amplitude modulation (16-QAM). In term of spectral efficiency, the system is compared with presence dense wavelength division multiplexing (DWDM) technique when varied the number of users. The result reveals that proposed C-OFDM is feasible for multiband modulation system and the scheme also effects on high spectral efficiency with spectral offset of more than 1 bps/Hz compared to conventional method.
