Prof. Dr.-Ing. Bernd Friedrichs

 

   Address:

Tesat-Spacecom

Communication Payloads
System Engineering

71522 Backnang
Germany

   Phone:

+49 7191 930 1137

   Business e-mail
   Private e-mail

bernd.friedrichs@tesat.de 
friedrichsb@t-online.de

Education and Work Record

 

1974

Abitur (high-school diploma from Gymnasium Raabeschule Braunschweig)

1980

Graduated with a Dipl.-Math. diploma in mathematics and computer science from Technical University of Braunschweig, Germany (Diploma thesis about multivariate statistics and discriminant analysis for pattern recognition)

1980-2009

Employed by Ericsson (formerly known as AEG-Telefunken, ANT Telecommunications, Bosch Telecom Public Networks, Marconi Communications) in Backnang (close to Stuttgart), Germany, in the System Engineering department for Fixed Wireless Access, earlier in the Advanced Development department

since 2009

Employed by Tesat-Spacecom in Backnang, communication payloads system engineering

1990

Ph.D. (Dr.-Ing. degree) in electrical engineering from University of Erlangen-Nürnberg, Germany (Ph.D. thesis about implementation of adaptive filters in digital receivers)

since 1993

Part-time lecturer at Karlsruhe Institute of Technology (KIT) at Communications Engineering Lab (CEL), teaching "Verfahren zur Kanalcodierung" (error-control coding)

since 2002

Honorary Professor at KIT (formerly University of Karlsruhe), Germany

Summary of Reserach Interests

Activities illustrated
 


EDRS System (European Data Relay Satellite)
Legend: EDRS-A @ 9E, EDRS-C @ 31E, red = optical link from Sentinel, green = link from ISS, light blue = Ka-band feeder downlink to Central Europe (note that similar pics can be found on the web but some of them do not display the links correctly)

 


Antennas for Long-Haul Line-of-Sight Radio
 

 


Block Diagram of Coded Wireless Transmission
 


Arithmetic Operations in Galois Field GF(8)

 


Point-to-Multipoint Communication
 
Interference Pattern for Cellular Radio Systems with Frequency Re-Use

 


Upper and Lower Bounds for Minimum Distance of Block Codes
 
The n-dimensional Gaussian Distribution

 


Simulation and Analysis Tool for Satellite Payloads

 

 


Various Error Rates and Reference Points in a Satellite Network
 
 
Spectra in Double-Conversion Receiver

 


Different Bit Error Structures the (Outer) Coding Scheme should be designed accordingly
 



ETSI Technical Body BRAN (Broadband Radio Access Networks) - Snapshots representing years 2003-2008
 


Data Link Layer Specification via Message Sequence Charts and High-Level MSCs (State Diagrams) - Telelogic SDL & TTCN Suite
 

 


Adaptive Transversal Filter (Equalizer)
 
Asymmetric Encryption for Privacy
 

 

Professional Societies


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