On the capacity regions of broadcast channel problems with receiver side information

Abstract:

In this talk we are going to look at several coding strategies for the discrete memoryless broadcast channel with receiver side information.
The communication problem originates from the second phase of a two phase decode-and-forward two-way relaying problem. The optimal coding scheme for the second phase is closely related to the famous butterfly example in network coding. In this talk we will look at several extensions of this problem. In particular, we will consider channels with random state non-causally known at the encoder. The optimal coding strategy for the general case is not known. In the talk we will discuss problems in the potential coding strategy and converse. The twist is due to the available side information at the encoder and decoder. For the case where the state is additionally known at the decoder, the capacity region can be obtained. The underlying coding scheme provides insights for the multi-user broadcast channel extension. Thus, we will discuss three-user setups with private and common messages for which capacity results can be obtained for several special cases. In fact, the multi-terminal broadcast channel with receiver side information describes one communication task of one phase in communication protocols for the file exchange problem

Presentation Slides

Biography:Dr. Oechtering received his Diplom-Ingenieur degree in Electrical Engineering and Information Technology in 2002 from RWTH Aachen University, Germany, and his Doktor-Ingenieur degree in Electrical Engineering in 2007 from the Technische Universität Berlin, Germany. Between 2002 and 2007 he worked as research and teaching assistant at the Heinrich-Hertz-Chair for Mobile Communications of the Technische Universität Berlin, Germany. He has previously been with Fraunhofer German-Sino Lab for Mobile Communications, Berlin, Germany from 2007 to 2008. In November 2008 he joined the Communication Theory Lab at the KTH Royal Institute of Technology, Stockholm, Sweden as a Post-Doctoral Researcher and has been an Assistant Professor since July 2010. Presently, he is serving as an editor for IEEE Communications Letters. Dr. Oechtering received the ``Advancement Award'' from the Vodafone Foundation in June 2009. His research interests include information theory, distributed detection, and signal processing for wireless communication, as well as communication for networked control.