Lasers, Fiber Optics, and Communications

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

[+] Author Affiliations
Rui Guan, Nuo Huang, Houyu Wang, Ming Chen

Southeast University, National Mobile Communications Research Laboratory, Sipailou 2, Xuanwu District, Nanjing, Jiangsu Province 210096, China

Jin-Yuan Wang

Nanjing University of Posts and Telecommunications, Peter Grünberg Research Center, No. 66 Xin Mofan Road, Gulou District, Nanjing, Jiangsu Province 210003, China

Opt. Eng. 55(5), 056111 (May 26, 2016). doi:10.1117/1.OE.55.5.056111
History: Received January 7, 2016; Accepted April 29, 2016
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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.

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© 2016 Society of Photo-Optical Instrumentation Engineers

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", Opt. Eng. 55(5), 056111 (May 26, 2016). ; http://dx.doi.org/10.1117/1.OE.55.5.056111


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