Layering of Communication Networks and a Forward-Backward Duality
Michael Cyran, Birgit E. Schotsch, Johannes B. Huber, Robert F. H. Fischer, Vahid Forutan · arXiv (Cornell University) · 2016
In layered communication networks there are only connections between intermediate nodes in adjacent layers. Applying network coding to such networks provides a number of benefits in theory as well as in practice. We propose a "layering procedure" to transform an arbitrary network into a layered structure. Furthermore, we derive a "forward-backward duality" for linear network codes, which can be seen as an analogon to the "uplink-downlink duality" in MIMO communication systems.