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Summary: IEEE Communications Magazine · February 2011 S330163-6804/11/$25.00 © 2011 IEEE
INTRODUCTION
As one of the major fiber to the home/curb/cabi-
net/and so on (FTTx) technologies, Ethernet
passive optical network (EPON) is developed
based on Ethernet technology, and enables
seamless integration with IP and Ethernet tech-
nologies [1]. Due to the advantages of fine scala-
bility, simplicity, and multicast convenience, as
well as the capability of providing full-service
access, EPON has been rapidly adopted in Japan
and is also gaining momentum with carriers in
China, Korea, and Taiwan since the IEEE rati-
fied EPON as the IEEE 802.3ah standard in
June 2004.
On the other hand, video-centric applications
and services such as HDTV are growing and
emerging in the network [2]. As compared to
traditional voice and data traffic, these multime-
dia applications are more bandwidth-hungry. For
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