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Events for February 08, 2013
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Twenty Years of Sphere Decoding
Fri, Feb 08, 2013 @ 11:00 AM - 12:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Emanuele Viterbo, Monash University, Melbourne Australia
Talk Title: Twenty Years of Sphere Decoding
Abstract: The sphere decoding algorithm was first introduced in digital communications in 1993. This algorithm provides a practical solution to an otherwise NP-complete problem (ML decoding for multidimensional lattice constellations over fading channels). This work has been cited to date in over 1200 papers (source: scholar.google) and this number is steadily growing. The pioneering use of lattice decoding of codes for single antenna systems has been followed by a substantial body of research showing the use of the sphere decoder in many other applications, among which decoding of space-time codes for MIMO. More re cently, the sphere decoding algorithm has been implemented in VLSI, for high rate wireless LAN terminals. This talk will present the basic principle of sphere decoding and its historical development into communications engineering.
Biography: Emanuele Viterbo received his degree (Laurea) in Electrical Engineering in 1989 and his Ph.D. in 1995 in Electrical Engineering, both from the Politecnico di Torino, Torino, Italy. From 1990 to 1992 he was with the European Patent Office, The Hague, The Netherlands, as a patent examiner in the field of dynamic recording and error-control coding. Between 1995 and 1997 he held a post-doctoral position in the Dipartimento di Elettronica of the Politecnico di Torino. In 1997-98 he was a post doctoral research fellow in the Information Sciences Research Center of AT&T Research, Florham Park, NJ, USA. He became first Assistant Professor (1998) then Associate Professor (2005) in Dipartimento di Elettronica at Politecnico di Torino. In 2006 he became Full Professor in DEIS at University of Calabria, Italy. From September 2010 he i s Full Professor in the ECSE Department and Associate Dean Reasearch Training for the Faculty of Engineering at Monash University, Melbourne, Australia.
In 1993 he was visiting researcher in the Communications Department of DLR, Oberpfaffenhofen, Germany. In 1994 and 1995 he was visiting the cole Nationale Suprieure des Telcommunications (E.N.S.T.), Paris. In 2003 he was visiting researcher at the Maths Department of EPFL, Lausanne, Switzerland. In 2004 he was visiting researcher at the Telecommunications Department of UNICAMP, Campinas, Brazil. In 2005, 2006 and 2009 he was visiting researcher at the ITR of UniSA, Adelaide, Australia. In 2007 he was visiting fellow at the Nokia Research Center, Helsinki, Finland. Prof. Emanuele Viterbo is a 2011 Fellow of the IEEE, a ISI Highly Cited Researcher and Member of the Board of Governors of the IEEE Information Theory Society (2011-2013). Dr. Emanuele Viterbo was awarded a NATO Advanced Fellowship in 1997 from the Italian National Research Council and the 2012-13 Australia-India Fellowship from the Australian Academy of Science. His main research interests are in lattice codes for the Gaussian and fading channels, algebraic coding theory, algebraic space-time coding, digital terrestrial television broadcasting, and digital magnetic recording.
Host: Giuseppe Caire, x04683, caire@usc.edu
Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248
Audiences: Everyone Is Invited
Contact: Gerrielyn Ramos
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Munushian Seminar
Fri, Feb 08, 2013 @ 02:30 PM - 03:30 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Konrad Lehnert, University of Colorado and NIST
Talk Title: “Micro-electromechanics: A New Quantum Technology”
Abstract: That an object can be in two distinct places simultaneously is a consequence of quantum theory and a fact routinely invoked to account for the behavior of electrons and atoms. Nevertheless, these superpositions are in conflict with our everyday experience. What is the largest and most tangible object that can be prepared in such a superposition? This question has motivated researchers to fabricate micron-scale mechanical resonators and coax them towards the regime of quantum behavior. Indeed micro-mechanical devices recently reached the quantum regime.
In this talk, I will describe how we use electricity to achieve the exquisite control and measurement of micro-mechanical resonators necessary to reach the quantum regime. Having entered this regime, we are now able to pursue many exciting ideas. We endeavor to use mechanical resonators as long-lived memories for the quantum states of electrical circuits. In addition, we are developing the technology to transfer quantum states between two incompatible systems via a mechanical intermediary. In the future, it may even be possible to test quantum theory itself in an unexplored region of mass and size scales.
Biography: Konrad W. Lehnert is a JILA Fellow, NIST physicist, and Associate Professor of Physics at the University of Colorado. As a graduate student Konrad studied mesoscopic superconductivity, working with S. James Allen at the University of California at Santa Barbara. He received his Ph. D. in 1999 and went on to a post-doc at Yale. There, he worked with Robert Schoelkopf on quantum bits (qubits) built from superconducting circuits. In 2003 he joined JILA (JILA is a joint institute of the University of Colorado and NIST), as an Associate Fellow. In 2007 he was promoted to JILA Fellow. At JILA, he has established a research group studying microwave quantum circuits, mesoscopic electronics, and quantum nanomechanics.
Host: EE-Electrophysics
Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248
Audiences: Everyone Is Invited
Contact: Marilyn Poplawski
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor.
