Enhanced hybrid asymmetrically clipped orthogonal frequency division multiplexing for optical wireless communications

Rui Guan; Nuo Huang; Jin-Yuan Wang; Houyu Wang; Ming Chen

doi:10.1117/1.OE.55.5.056111

26 May 2016 Enhanced hybrid asymmetrically clipped orthogonal frequency division multiplexing for optical wireless communications

Rui Guan, Nuo Huang, Jin-Yuan Wang, Houyu Wang, Ming Chen

Author Affiliations +

Funded by: National Nature Science Foundation of China, Natural Science Foundation of China, Guangdong Province Science Technology Plan Project, Program Sponsored for Scientific Innovation Research

Optical Engineering, Vol. 55, Issue 5, 056111 (May 2016). https://doi.org/10.1117/1.OE.55.5.056111

Abstract

This paper presents an enhanced hybrid asymmetrically clipped optical orthogonal frequency division multiplexing (EHACO-OFDM) scheme, which benefits from the simultaneous transmission of ACO-OFDM, pulse-amplitude-modulated discrete multitone modulation, and direct-current-biased optical orthogonal frequency division multiplexing (DCO-OFDM). Since the entire available bandwidth is utilized for data modulation, this scheme can achieve higher spectral efficiency than HACO-OFDM and ACO-OFDM. Moreover, as a smaller DC bias is introduced in our scheme, it is more power efficient than asymmetrically clipped DC-biased optical OFDM (ADO-OFDM) and DCO-OFDM. A modified receiver is also designed for this system, taking advantage of an iterative algorithm and a pairwise averaging. It has been shown by simulation that our three-path simultaneous transmission scheme can surpass the existing mixed OFDM-based schemes at high data rates. In addition, compared with the noniterative receiver, the modified receiver exhibits significant gains.

Citation Download Citation

Rui Guan, Nuo Huang, Jin-Yuan Wang, Houyu Wang, and Ming Chen "Enhanced hybrid asymmetrically clipped orthogonal frequency division multiplexing for optical wireless communications," Optical Engineering 55(5), 056111 (26 May 2016). https://doi.org/10.1117/1.OE.55.5.056111

Published: 26 May 2016

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