Wednesday, September 23, 2015 - 4:00pm to 5:30pm
Event Calendar Category
Other LIDS Events
Speaker Name
Prof. Rüdiger Urbanke
Affiliation
École polytechnique fédérale de Lausanne EPFL
Building and Room Number
32-155
Abstract
Short Course on Polar Codes Ruediger Urbanke, EPFL 4pm-5:30pm Polar codes, invented by Erdal Arikan in 2008, are error correcting codes that are based on an entirely new principle and have many desirable properties. They are inherently of low complexity both for encoding and decoding,their analysis is simple, they allow to achieve capacity, and the underlying idea is broad and flexible and can hence be applied to a variety of problems. Starting from scratch, we will see how simple notions of information theory form the basis for the polarization phenomenon, how these codes can be constructed and decoded efficiently, how they perform, and how to extend the basic idea to more complex scenarios. Lecture 1: The Polarization Phenomenon * binary erasure channel: proof of convergence * binary-input memoryless output-symmetric channels: Mrs. Gerber¹s lemma and proof of convergence