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Events for January 19, 2011
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Munushian Seminar -CANCELED
Wed, Jan 19, 2011 @ 02:00 PM - 03:30 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Dr. Julie Brown, Senior Vice President, Universal Display Corporation
Talk Title: âLighting the way with Organic Lighting Emitting Devicesâ
Abstract: Organic lighting emitting diodes or OLEDs are now catching the attention of the consumer. OLED smart phones can be found in every store, and are offered by all the major carriers. Fabulous early entry small area OLED TVs are now available and offer truly spectacular visual experiences with large area prototypes being exhibited at leading tradeshows. While the early focus of OLED development was for flat panel display applications, through the use of phosphorescent OLEDs, energy efficient solid state lighting is now also being realized. Lighting is now at a cross roads. Incandescent lamps are being banned world wide because of their environmental impact, while compact fluorescent lamps have limited visual appeal, as well as safety concerns for residential lighting due to their mercury content. Both inorganic LEDs and OLEDs provide safe and efficient replacements for these older lighting technologies, and can complement each other in how they are used. Here we will focus on the global interest in solid state lighting and recent rapid progress in OLED lighting panel prototypes and discuss the next set of research, development and commercialization challenges to insure future impact.
Biography: Dr. Brown is Senior Vice President and Chief Technical Officer at Universal Display Corporation (UDC). UDC is an entrepreneurial company pursuing the research, development and commercialization of organic light emitting device (OLEDs) technology into two key growth markets, namely flat panel displays and solid state lighting. UDCâs key position in the industry, along with their academic research teams at USC and U of M, is as pioneers of phosphorescent OLEDs to enable âgreenâ energy efficient OLED solutions for these markets. Under her leadership, UDC is also pursuing the creation of new product concepts based on flexible OLED displays and light sources.
Prior to joining UDC in 1998, she was a Research Manager at Hughes Research Laboratories where she was involved in the pilot line production of high speed Indium Phosphide-based integrated circuits for insertion into advanced airborne radar and satellite communication systems. Dr. Brown received her B. S. in Electrical Engineering from Cornell University (1983) and then worked at Raytheon Company (1983-1984) and AT&T Bell Laboratories (1984-1986) before returning to graduate school. Dr. Brown received an M.S. (1988) and Ph.D. (1991) in Electrical Eng./Electrophysics at the University of Southern California under the advisement of Professor Stephen R. Forrest.
Dr. Brown was nominated to IEEE Fellow in 2007 and inducted into the New Jersey High Tech Hall of Fame in 2007. She is actively involved in the Society of Information Display and over the past years been involved in a number of other professional societies. She has authored or co-authored numerous publications and patents in the fields of high speed compound semiconductor devices, microelectro-
mechanical systems (MEMs) and organic light emitting devices (OLEDs).
Host: EE-Electrophysics
Location: Donald P. & Katherine B. Loker Hydrocarbon Institute (LHI) -
Audiences: Everyone Is Invited
Contact: Marilyn Poplawski
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Feedback Role in Interference Networks
Wed, Jan 19, 2011 @ 02:00 PM - 03:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Changho Suh, University of California at Berkeley
Talk Title: Feedback Role in Interference Networks
Abstract: Traditionally, it is believed that feedback has had little impact on increasing capacity. This is mainly due to Shannon's original result on feedback capacity, where he showed that feedback cannot increase the capacity in point-to-point communication links. Hence the use of feedback has been so far limited to improving the reliability of communication, usually in the form of ARQ.
In this talk, I will present a promising role of feedback in networks. What we have shown is that when there are two interfering point-to-point links, not only can feedback increase capacity of each link, but it can in fact provide an unbounded increase in capacity as the signal-to-noise ratio of the links increases. In the process of deriving this conclusion, we characterize the feedback capacity of the two-user Gaussian interference channel to within 2 bits, an open problem for more than 30 years.
Furthermore, I will show the potential impact of feedback on practical systems that take feedback cost into account. Specifically, I will present an interesting scenario in the context of multiple (more than 3) interfering point-to-point links, where 1 bit of feedback can provide a capacity increase of an arbitrarily large number of bits.
Biography: Changho Suh received the B.S. and M.S. degrees in electrical engineering from Korea Advanced Institute of Science and Technology in 2000 and 2002, respectively. Since 2006, he has been with the Department of Electrical Engineering and Computer Science in the University of California at Berkeley, where he is pursuing the Ph.D. degree under the supervision of Prof. David Tse. Prior to that, he had been with the Telecommunication R&D Center, Samsung Electronics.
He is a recipient of the Best Student Paper Award of the IEEE International Symposium on Information Theory 2009 and the Outstanding Graduate Student Instructor Award in 2010. He awarded several fellowships: the Vodafone U.S. Foundation Fellowship in 2006 and 2007; Kwanjeong Educational Foundation Fellowship in 2009; and Korea Government Fellowship from 1996 to 2002.
Host: Alex Dimakis, dimakis@usc.edu, EEB 532, x09264
Audiences: Everyone Is Invited
Contact: Gerrielyn Ramos
