A Low-Energy Rate-Adaptive Bit-Interleaved Passive Optical Network

Energy consumption of customer premises equipment (CPE) has become a serious issue in the new generations of time-division multiplexing passive optical networks, which operate at 10 Gb/s or higher. It is becoming a major factor in global network energy consumption, and it poses problems during emerg...

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Bibliographic Details
Published in:IEEE journal on selected areas in communications 2014-08, Vol.32 (8), p.1552-1565
Main Authors: Suvakovic, Dusan, Hungkei Chow, Anthapadmanabhan, N. Prasanth, van Veen, Doutje T., van Wijngaarden, Adriaan J., Ayhan, Tolga, van Praet, Christophe, Torfs, Guy, Xin Yin, Vetter, Peter
Format: Article
Language:English
Subjects:
Bandwidths
Clocks
Emergencies
Energy consumption
Low energy
Networks
Optical communication
Passive optical networks
Payloads
Product introduction
Protocols
Synchronization
Traffic engineering
Traffic flow
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Summary:Energy consumption of customer premises equipment (CPE) has become a serious issue in the new generations of time-division multiplexing passive optical networks, which operate at 10 Gb/s or higher. It is becoming a major factor in global network energy consumption, and it poses problems during emergencies when CPE is battery-operated. In this paper, a low-energy passive optical network (PON) that uses a novel bit-interleaving downstream protocol is proposed. The details about the network architecture, protocol, and the key enabling implementation aspects, including dynamic traffic interleaving, rate-adaptive descrambling of decimated traffic, and the design and implementation of a downsampling clock and data recovery circuit, are described. The proposed concept is shown to reduce the energy consumption for protocol processing by a factor of 30. A detailed analysis of the energy consumption in the CPE shows that the interleaving protocol reduces the total energy consumption of the CPE significantly in comparison to the standard 10 Gb/s PON CPE. Experimental results obtained from measurements on the implemented CPE prototype confirm that the CPE consumes significantly less energy than the standard 10 Gb/s PON CPE.
ISSN:0733-8716
1558-0008
DOI:10.1109/JSAC.2014.2335331