1. Research Center for BioMedical Technology (BMT), Fachhochschule Dortmund, Sonnenstr. 96, Dortmund , Germany
2. Research Center for BioMedical Technology (BMT), Fachhochschule Dortmund, Dortmund , Germany
3. Chair of Signal Processing (EIT 3.2), Munich University of the Bundeswehr, Neubiberg , Germany