Coded Wireless Video Broadcast/Multicast - A Framework to Harvest The True
Potential of 4G Access Networks 报告人：Dr. James She, University of Cambridge, United Kingdom 时 间：2010年10月18日（周一）下午14:30
地 点：蒙民伟楼404会议室 摘 要
Advancements in video coding and wireless communications, particularly in
emerging 4G access networks, have created many foreseeable and exciting
wireless video broadcast/multicast applications. Although using shared
broadcast radio signals can nicely scale the system capacity regardless of the
number of receivers, the rate is limited by the poorest-channel receiver for
the largest scalability. This prohibits the true potential of any 4G access
network to enable high-quality video broadcast, such as for high-definition TV
content. For efficient and robust wireless video broadcast/multicast under
fading, this talk presents a novel cross-layer framework that exploits the
interplay between applying protections on any successively refinable video
source and transmitting through a layered broadcast/multicast channel. It is
achievable by using multiple descriptions coding on a scalable video source
and using superposition coding for layered broadcast/multicast transmission.
The research results reveal the scenarios for the framework to lead to a lower
distortion than a legacy system. Most importantly, this generic framework
contributes to the advancement in the related research fields by introducing a
new design dimension in terms of protection. 简 历
James She is a Research Fellow in the Computer Laboratory at the University
of Cambridge, U.K. He completed his Ph.D. in Elect. & Comp. Eng. from the
University of Waterloo (UW), Canada, in August 2009. His current research
interests include wireless video broadcasting for IPTV/3D systems; wireless/
mobile social media networks, wireless video sensor networks. During his Ph.D.
study, he has generated 5 International, US, Taiwanese patents and authored 2
0+ publications. James also received his M.Phil. in Elect. & Comp. Eng. from
the H.K. University of Sci. and Tech., H.K. Two US and Chinese patents
resulted from his Master's thesis were licensed to a startup company - SinoCDN
Limited. The same patents were acuiqred by a US firm. During 2000-2003, James
served as the Chief Technology Officer for SinoCDN Limited. He is also a
recipient of an honor of "Outstanding Achievement of Graduate Studies" awarded
by UW and three Canadian national awards in 2009 - NSERC Postdoctoral
Fellowship Award, NSERC Innovation Challenge Award, and Canada-UK Millennium
Research Award. In 2001, he was the youngest recipient, to-date, to be named
one of "Ten Outstanding Young Digi-Persons" by the Innovation and Tech.
Association and the Info. Tech. Dept. in H.K. In addition, he received two H.K
. Industry Awards with his patented technology.
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