Title: An Energy and Cost Efficient WDM/OFDMA PON System: Design and Demonstration
Authors: Yuang, Maria C.
Hsu, Dar-Zu
Tien, Po-Lung
Chen, Hsing-Yu
Wei, Chia-Chien
Chen, Shin-Hao
Chen, Jyehong
Department of Computer Science
Department of Electrical and Computer Engineering
Department of Photonics
Keywords: Energy efficiency;Orthogonal Frequency Division Multiple Access (OFDMA);Passive Optical Network (PON)
Issue Date: 15-Aug-2013
Abstract: In this paper, we propose an energy and cost efficient WDM/OFDMA PON system, referred to as NEWOPS. Based on a new two-tiered semi-tree architecture, NEWOPS allows a large number of ONUs to be connected to OLT using only a handful of colorless transceivers. Due to the architecture, NEWOPS not only facilitates high spectral efficiency and flexible sub-channel bandwidth allocation, but also reduces the Rayleigh backscattering (RB) problem and achieves high energy and cost efficiency. Experimental results demonstrate that, taking only 5-GHz bandwidth for each wavelength, NEWOPS successfully achieves 20-Gb/s downstream and 10-Gb/s upstream OFDM-xQAM transmissions via the same fiber trunk. We depict that, to support 40 ONUs for example, NEWOPS achieves energy efficiency that is three to six times higher than that of a typical 10-Gb/s WDM/OFDM PON.
URI: http://dx.doi.org/10.1109/JLT.2013.2273932
ISSN: 0733-8724
DOI: 10.1109/JLT.2013.2273932
Volume: 31
Issue: 16
Begin Page: 2809
End Page: 2816
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