e & i Elektrotechnik und InformationstechnikDecember 2009, Volume 126, Issue 12, pp 450–470 | Cite asCIRED 2009: Berichte aus den SessionenBerichte 91 Downloads This is a preview of subscription content, log in to check access.PreviewUnable to display preview. Download preview PDF.Unable to display preview. Download preview PDF.Copyright information© Springer-Verlag 2009