The weekly SILO Seminar Series is made possible through the generous support of the 3M Company and its Advanced Technology Group


with additional support from the Analytics Group of the Northwestern Mutual Life Insurance Company

Northwestern Mutual

On the interaction between network coding and the physical layer - information theoretic results and a case study.

Muriel Medard, Prof.

Date and Time: Feb 26, 2014 (11:00 AM)
Location: Orchard room (3280) at the Wisconsin Institute for Discovery Building


The question of how and whether to join physical layer and network coding remains actively investigated. In this talk, we present some recent information-theoretic results and an application illustrating a view of this question. We begin by considering whether there are benefits, in capacity, from integrating network and physical layer coding. Network equivalence implies it is interference and broadcast effects, rather than the presence of noise, that might lead to such capacity benefits. However, in regimes of low SNR and of high SNR, where broadcast and interference, respectively, may be the dominant effects, integration appears to provide negligible benefits. We conclude with results from the first network coding chip. The benefit of both network and physical coding can be seen to be cumulative, even in the absence of coordination between the two.