Prof. Dr.-Ing. Bernd Friedrichs

Contact me:   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)

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)

1993-2020

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

2002

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

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

2009-2021

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

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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