26 May 2016 Enhanced hybrid asymmetrically clipped orthogonal frequency division multiplexing for optical wireless communications
Author Affiliations +
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.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Rui Guan, Rui Guan, Nuo Huang, Nuo Huang, Jin-Yuan Wang, Jin-Yuan Wang, Houyu Wang, Houyu Wang, Ming Chen, 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 . Submission:
JOURNAL ARTICLE
7 PAGES


SHARE
RELATED CONTENT


Back to Top