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Optical Engineering

Enhanced hybrid asymmetrically clipped orthogonal frequency division multiplexing for optical wireless communications
Author(s): Rui Guan; Nuo Huang; Jin-Yuan Wang; Houyu Wang; Ming Chen
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Paper 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.

Paper Details

Date Published: 26 May 2016
PDF: 7 pages
Opt. Eng. 55(5) 056111 doi: 10.1117/1.OE.55.5.056111
Published in: Optical Engineering Volume 55, Issue 5
Show Author Affiliations
Rui Guan, Southeast Univ. (China)
Nuo Huang, Southeast Univ. (China)
Jin-Yuan Wang, Nanjing Univ. of Posts and Telecommunications (China)
Houyu Wang, Southeast Univ. (China)
Ming Chen, Southeast Univ. (China)


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