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SUMMARY:Characterizing degrees of freedom through additive combinatorics -
  Prof. Helmut Bölcskei\, ETH Zurich
DTSTART:20151009T130000Z
DTEND:20151009T140000Z
UID:TALK60592@talks.cam.ac.uk
CONTACT:Prof. Ramji Venkataramanan
DESCRIPTION:*Abstract*: It is well known that in K-user  single-antenna in
 terference channels K/2 degrees of freedom (DoF) can be achieved for almos
 t all channel matrices. Explicit conditions on the channel matrix to admit
  K/2 DoF are\, however\, not available. In this talk we identify such expl
 icit conditions\, which are satisfied for almost all channel matrices. We 
 also provide a construction of corresponding asymptotically DoF-optimal in
 put distributions. The main technical tool used is a recent breakthrough r
 esult by Hochman in fractal geometry. We conclude by discussing connection
 s between interference alignment and the field of additive combinatorics.\
 n\n*Biography*: Helmut Bölcskei was born in Mödling\, Austria on May 29\
 , 1970\, and received the Dipl.-Ing. and Dr. techn. degrees in electrical 
 engineering from Vienna University of Technology\, Vienna\, Austria\, in 1
 994 and 1997\, respectively. In 1998 he was with Vienna University of Tech
 nology. From 1999 to 2001 he was a postdoctoral researcher in the Informat
 ion Systems Laboratory\, Department of Electrical Engineering\, and in the
  Department of Statistics\, Stanford University\, Stanford\, CA. He was in
  the founding team of Iospan Wireless Inc.\, a Silicon Valley-based startu
 p company (acquired by Intel Corporation in 2002) specialized in multiple-
 input multiple-output (MIMO) wireless systems for high-speed Internet acce
 ss\, and was a co-founder of Celestrius AG\, Zurich\, Switzerland. From 20
 01 to 2002 he was an Assistant Professor of Electrical Engineering at the 
 University of Illinois at Urbana-Champaign. He has been with ETH Zurich si
 nce 2002\, where he is Professor of Electrical Engineering. He was a visit
 ing researcher at Philips Research Laboratories Eindhoven\, The Netherland
 s\, ENST Paris\, France\, and the Heinrich Hertz Institute Berlin\, German
 y. His research interests are in information theory\, mathematical signal 
 processing\, machine learning\, and statistics.\n\nHe received the 2001 IE
 EE Signal Processing Society Young Author Best Paper Award\, the 2006 IEEE
  Communications Society Leonard G. Abraham Best Paper Award\, the 2010 Vod
 afone Innovations Award\, the ETH "Golden Owl" Teaching Award\, is a Fello
 w of the IEEE\, a 2011 EURASIP Fellow\, was a Distinguished Lecturer (2013
 -2014) of the IEEE Information Theory Society\, an Erwin Schrödinger Fell
 ow (1999-2001) of the Austrian National Science Foundation (FWF)\, and was
  included in the 2014 Thomson Reuters List of Highly Cited Researchers in 
 Computer Science. He served as an associate editor of the IEEE Transaction
 s on Information Theory\, the IEEE Transactions on Signal Processing\, the
  IEEE Transactions on Wireless Communications\, and the EURASIP Journal on
  Applied Signal Processing. He was editor-in-chief of the IEEE Transaction
 s on Information Theory during the period 2010-2013. He served on the edit
 orial board of the IEEE Signal Processing Magazine and is currently on the
  editorial boards of "Foundations and Trends in Networking” and "Foundat
 ions and Trends in Communications and Information Theory”. He was TPC co
 -chair of the 2008 IEEE International Symposium on Information Theory and 
 serves on the Board of Governors of the IEEE Information Theory Society.
LOCATION:LR5\, Department of Engineering
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