Signal processing with factor graphs: examples

Graphical models such as factor graphs allow to model complex systems and help to derive practical detection/estimation algorithms as message passing in the graph. In this paper, we outline three examples of on-going work of this type. For an introduction to factor graphs, we refer to F. R. Kschischang (Feb. 2001) and H. A. Loeliger (Jan. 2004). We use the notation of H. A. Loeliger (Jan. 2004).