Thursday, June 9, 2005

Hewlett 201
Stanford University


Kailath Colloquium 2005 Abstracts
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Dynamic Spectrum Management

John Cioffi
Stanford University

This talk overviews the area of Dynamic Spectrum Management and its application to binders of cross-talking transmission wires. The prudent application of spectral power control and MIMO processing is shown to increase the capacity of transmission channels with respect to "single-user" independent use by typically factors of 3-10 times. Some of the basic casting of such problems into a multi-user framework is provided in an introductory fashion along with the consequent results. The capacity of a typical American copper drop (300 meters or less) is found to exceed 1 Gbps symmetric transmission, sometimes known as GDSL.

Space-Time Wireless: From Theory to Application

Arogyaswami Paulraj
Stanford University

This talk overviews the evolution of space-time wireless communications. We describe the key theoretical milestones in this field beginning with the early work in adaptive antennas and directions-of-arrival estimation in the 1970s/1980s and ending with the mainstream MIMO work in recent years. We also survey industry efforts to build space-time wireless technology in 1990s to the more recent MIMO based products. We end with emerging trends in theory and applications.

Information Systems beyond Electrical Engineering

Vwani Roychowdhury
University of California at Los Angeles

This talk will discuss recent progress in a number of different fields, where the use of an information theoretic and systems perspective has found widespread acceptance. The highlight will be the establishment of new computational complexity classes, as derived from the laws of physics, and their relationships to the conventional complexity classes studied in computer science. These results are based on work inspired by the introduction of Shannon entropy, and the ongoing quest to understand the second law of thermodynamics and quantum mechanics, purely from the perspective of fine-grained information content of physical systems. Several examples of practical engineering systems, which have been designed based on such informational laws will be briefly mentioned.