SUNMONTUEWEDTHUFRISAT
Events for April 13, 2007
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Floppy Forensics: Why you need a Ph.D from USC 20 years later
Fri, Apr 13, 2007 @ 12:30 PM - 01:15 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Dr. Fred Cohen: On June 21, 2005, I received the one and only floppy disk purported to have been originally written in the 1980s that was the key piece of evidence in a legal matter worth at least tens of millions of dollars. The reason I got it was that nobody else could read it. This talk is about how I extracted the contents, how sure I am that what I extracted is what was originally written some 20 years earlier and not a forgery created to win millions of dollars in a legal battle, and why I am that sure. It involves a hundred floppy disk drives, aging computers and long ago software libraries, flux density, electromechanical systems, a custom version of an operating system, a spiral disk, a trip to a military base in the desert that I made when I was a graduate student, coding and finite state machines, a trip to Alaska, and more. It is the proof that 20 years later, the things you learn on the way to getting your Ph.D. are still useful.
Location: Grace Ford Salvatori Hall Of Letters, Arts & Sciences (GFS) - 106
Audiences: Everyone Is Invited
Contact: Annie Yu
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Cognition, Computers, and Managing Perception - Dr. Fred Cohen
Fri, Apr 13, 2007 @ 02:00 PM - 03:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
People who break into computers lie all the time in their attacks, but what happens to the attackers when the computers lie back to them? In this talk, Dr. Cohen will describe what is believed to be the largest and most complete scientific experiments ever undertaken to test out an information security approach, the methodologies developed to carry out these experiments, the laboratory facilities used to support these experiments, and of course the underlying theory, experiments, and outcomes. Along the way, magic tricks will be used to demonstrate and clarify the theoretical underpinnings of the use of deception for information protection.
Location: Seeley G. Mudd Building (SGM) - 101
Audiences: Everyone Is Invited
Contact: Annie Yu
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Quantized Feedback Design for MIMO Broadcast Channels
Fri, Apr 13, 2007 @ 03:00 PM - 04:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
SPEAKER: Professor Mikael Skoglund, KTH, SwedenABSTRACT: Low-rate feedback design for multiple-input multiple-output broadcast channels is studied under a vector quantization framework. Iterative algorithms are proposed to design the partial feedback link, the scheduler, and the linear precoding codebook. It is demonstrated that the gain due to multi-user diversity can be significant even with heavily quantized channel state information at the transmitter. Our results highlight the potential of multi-user diversity, even with simple schemes and extremely-low-rate feedback.BIO: Mikael Skoglund received the Ph.D. degree in 1997 from Chalmers University of Technology, Gothenburg, Sweden. In the same year he joined the Royal Institute of Technology (KTH), Stockholm, Sweden. Here he held various positions until he was appointed Professor of Communication Theory in 2003.Dr. Skoglund's research interests are in information theory, communications, and detection and estimation. He has worked on problems in vector quantization, combined source-channel coding, coding for wireless communications, and statistical signal processing. Dr. Skoglund has authored some 100 scientific papers. Several of these have received best paper awards, and one recent journal paper ranks as 'highly cited' according to the ISI Essential Science Indicators.Dr. Skoglund is frequently serving as area expert and reviewer for research grants and publications, and he is an Associate Editor with the IEEE Transactions on Communications. Dr. Skoglund has also consulted for industry, and he holds 6 patents. He is a senior member of the IEEE.Host: Giuseppe Caire, caire@usc.edu
Location: Hughes Aircraft Electrical Engineering Center (EEB) - -248
Audiences: Everyone Is Invited
Contact: Mayumi Thrasher
