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Events for March 02, 2011
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Munushian Seminar
Wed, Mar 02, 2011 @ 02:00 PM - 03:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Dr. Werner Goetz, Senior Director, Philips Lumileds Lighting Company
Talk Title: High-power LED Technology and Solid State Lighting
Abstract: The rapid adoption of LEDs in general illumination is fueled by high-power phosphor-conversion and direct color blue and red LED technology. Over the last several years technology development has boosted the efficacy of white high-power LEDs to greater than 100 lm/W even for devices with warm-white correlated color temperature and high color rendering index at operating conditions. In combination with advances in production cost reduction, LED-based luminaires are winning the battle against their conventional counterparts in applications where their energy efficiency, long life, and ruggedness lead to a cost of ownership advantage.
This presentation will provide an overview of high-power LED technology, applications, and discuss challenges for future efficacy improvement and cost reduction.
Host: EE-Electrophysics
More Info: http://ee.usc.edu/news/munushianLocation: Hedco Neurosciences Building (HNB) -
Audiences: Everyone Is Invited
Contact: Marilyn Poplawski
Event Link: http://ee.usc.edu/news/munushian
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A Clean-Slate Design of Wireless Ad Hoc Networks Using On-Off-Division Duplex
Wed, Mar 02, 2011 @ 02:00 PM - 03:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Dongning Guo , Northwestern University
Talk Title: A Clean-Slate Design of Wireless Ad Hoc Networks Using On-Off-Division Duplex
Abstract: We introduce a novel paradigm, called rapid on-off-division duplex
(RODD), for designing the physical and medium access control (MAC)
layers of a wireless ad hoc network formed by half-duplex radios. A
node equipped with a half-duplex radio cannot simultaneously transmit and
receive useful signals at the same frequency. Unlike in conventional
designs, where a node's transmission frames are scheduled away from
its reception, RODD lets each node transmit its signal through a
unique on-off duplex mask (or signature) over every frame interval,
and receive a signal through each off-slot. Over the period of a
single frame, every node can transmit a message to its peers, and
simultaneously receive a message from each peer. Thus RODD achieves
virtual full-duplex communication using half-duplex radios without
complicated scheduling at the frame level. The throughput of RODD is
determined under some simple settings, which is significantly larger
than that of certain random access schemes. RODD is especially
efficient in case the dominant traffic is simultaneous broadcast from
nodes to their one-hop peers. Design issues such as peer discovery,
synchronization and coding schemes will also be addressed.
Biography: Dongning Guo joined the faculty of Northwestern University, Evanston,
IL, in 2004, where he is currently an Associate Professor in the
Department of Electrical Engineering and Computer Science. He received
the B.Eng. degree from the University of Science & Technology of
China, the M.Eng. degree from the National University of Singapore,
and the M.A. and Ph.D. degrees from Princeton University, Princeton,
NJ. He was an R&D Engineer in the Center for Wireless Communications
(now the Institute for Infocom Research), Singapore, from 1998 to
1999. He has held visiting positions at Norwegian University of
Science and Technology in summer 2006 and Chinese University of Hong
Kong in 2010-2011. He is an Associate Editor of IEEE Transactions on
Information Theory in the area of Shannon Theory.
Dongning Guo received the Huber and Suhner Best Student Paper Award in
the International Zurich Seminar on Broadband Communications in 2000
and is a co-recipient of the IEEE Marconi Prize Paper Award in
Wireless Communications in 2010. He is also a recipient of the
National Science Foundation Faculty Early Career Development (CAREER)
Award in 2007. His research interests are in information theory,
communications, and networking.
Host: Alex Dimakis
Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248
Audiences: Everyone Is Invited
Contact: Gerrielyn Ramos
