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 +

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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