Triple-layer hybrid optical OFDM scheme for passive optical network

Ji, Han; Lin, Bangjiang; Tang, Xuan; Xu, Junxiang

doi:10.1016/j.optcom.2020.125622

Cited by 5 publications

(1 citation statement)

References 21 publications

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“…In addition, to improve the SE other schemes such as (i) hybrid schemes have been proposed including asymmetrically clipped DC biased O-OFDM (ADO-OFDM) [20], hybrid asymmetrically clipped OFDM (HACO-OFDM) [21], asymmetrically clipped absolute value optical OFDM (AAO-OFDM) [22], hybrid PAM-DMT (HPAM-DMT) [23], and polarization OFDM [24] have been proposed to improve the SE; And (ii) layered (or enhanced) schemes including enhanced U-OFDM (eU-OFDM) [25], layered ACO-OFDM (LACO-OFDM) [26], absolute value layered ACO-OFDM (ALACO-OFDM) [27] and augmented SE-DMT (ASE-DMT) [28], where infinite layer unipolar U-OFDM, ACO-OFDM or PAM-DMT can be superimposed. Superior to the layered/enhanced schemes with infinite layers superimposition, a triple-layer hybrid optical OFDM (THO-OFDM) scheme reaching the SE limit of LACO-OFDM was proposed with enhanced performance and reduced computation complexity [14], [29].…”

Section: A Related Workmentioning

confidence: 99%

Joint Dimming Control and Optimal Power Allocation for THO-OFDM Visible Light Communications

Zhang

Qiao

et al. 2021

IEEE Trans. Commun.

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Layered or hybrid optical orthogonal frequency division multiplexing (OFDM) has been proposed for use in optical communications due to its excellent spectral and power efficiencies, especially in visible light communications (VLC). However, most of the current works concentrate on transmitter and receiver design as well as the quality of service in communication networks. In this paper, we propose a spectrumefficient dimmable triple-layer hybrid optical OFDM (DTH-OFDM) scheme to tackle the illumination requirements, considering different practical indoor VLC scenarios from low illumination to high illumination intensities. In the proposed DTH-OFDM scheme, the required dimming level is achieved by jointly adjusting the dimming factors and direct current bias. We investigate the comprehensive performance analysis of the proposed DTH-OFDM in detail, including probability density function, bit error rate (BER), spectral and energy efficiencies. In addition, a joint dimming control and optimal power allocation problem for DTH-OFDM is formulated and solved using convex optimization under the constraints of light emitting diode (LED) nonlinearity, dimming target and communications reliability. Numerical results show that, the proposed DTH-OFDM can offer continuous and arbitrary dimming target with higher spectral efficiency and lower BER compared with its counterparts, as well as an enhanced tolerance to the LED nonlinearity.

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Section: A Related Workmentioning

confidence: 99%

Joint Dimming Control and Optimal Power Allocation for THO-OFDM Visible Light Communications

Zhang

Qiao

et al. 2021

IEEE Trans. Commun.

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A combined digital linearization and channel estimation approach for IM/DD fast-OFDM systems

Vieira

Hussein

Darwazeh

et al. 2021

Optical Fiber Technology

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The Evolution of Optical OFDM

Zhang

Babar

Petropoulos

et al. 2021

IEEE Commun. Surv. Tutorials

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Optical Orthogonal Frequency-Division Multiplexing (O-OFDM) is eminently suitable for mitigating the multi-path and chromatic dispersion in both Visible Light Communications (VLC) and Optical Fiber Communications. We commence our discourse by surveying the conception and historic evolution of O-OFDM designed for both VLC and optical fiber, culminating in the birth of its most flexible design alternative, namely Layered Asymmetrically Clipped Optical OFDM (LACO-OFDM). We demonstrate that it is eminently suitable for intensity-modulation and direct-detection aided optical communication systems and characterize its design flexibility. It is also shown that given its flexibility, it subsumes a wide range of optical OFDM schemes conceived over the past two decades or so. The LACO-OFDM transmitter and receiver designs strike a compelling compromise between the features of the popular Asymmetrically Clipped Optical OFDM (ACO-OFDM) and Direct Current Offset OFDM (DCO-OFDM). The pivotal role of forward error correction (FEC) designs is also surveyed with the objective of striking a coding gain versus complexity trade-off. We conclude by highlighting a suite of promising techniques capable of further improving the system performance, but require further research. The take-away message of the paper crystallized in the associated design guidelines.

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Triple-layer hybrid optical OFDM scheme for passive optical network

Cited by 5 publications

References 21 publications

Joint Dimming Control and Optimal Power Allocation for THO-OFDM Visible Light Communications

Joint Dimming Control and Optimal Power Allocation for THO-OFDM Visible Light Communications

A combined digital linearization and channel estimation approach for IM/DD fast-OFDM systems

The Evolution of Optical OFDM

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