Joachim Hagenauer (born 29 July 1941) is an information theorist and professor

emeritus ''Emeritus/Emerita'' () is an honorary title granted to someone who retires from a position of distinction, most commonly an academic faculty position, but is allowed to continue using the previous title, as in "professor emeritus". In some c ...

Technical University of Munich The Technical University of Munich (TUM or TU Munich; ) is a public research university in Munich, Bavaria, Germany. It specializes in engineering, technology, medicine, and applied and natural sciences. Established in 1868 by King Ludwig II ...

. He pioneered the use of ''soft bits'' (see

Soft output Viterbi algorithm The Viterbi algorithm is a dynamic programming algorithm for obtaining the maximum a posteriori probability estimate of the most likely sequence of hidden states—called the Viterbi path—that results in a sequence of observed events. This i ...

), a

coding theory Coding theory is the study of the properties of codes and their respective fitness for specific applications. Codes are used for data compression, cryptography, error detection and correction, data transmission and computer data storage, data sto ...

technique that contributes to the high performance of the turbo codes. Professor Hagenauer's work enabled the advancement of turbo coding and led to a significant improvement in channel coding for

digital communications Data communication, including data transmission and data reception, is the transfer of data, signal transmission, transmitted and received over a Point-to-point (telecommunications), point-to-point or point-to-multipoint communication chann ...

and storage. His works have been applied to digital receiver designs, satellite transmissions and other facets of telecommunications. Hagenauer received his doctorate in 1974 from

Darmstadt University of Technology Darmstadt () is a city in the States of Germany, state of Hesse in Germany, located in the southern part of the Frankfurt Rhine Main Area, Rhine-Main-Area (Frankfurt Metropolitan Region). Darmstadt has around 160,000 inhabitants, making it the ...

where he also served as an assistant professor. In 1990 he was appointed a director of the Institute for Communication Technology at the

German Aerospace Center The German Aerospace Center (, abbreviated DLR, literally ''German Center for Air- and Space-flight'') is the national center for aerospace, energy and transportation research of Germany, founded in 1969. It is headquartered in Cologne with 3 ...

DLR in Oberpfaffenhofen. In 1993 he became the Chair of the University of Technology's Communications Technology department in

Munich Munich is the capital and most populous city of Bavaria, Germany. As of 30 November 2024, its population was 1,604,384, making it the third-largest city in Germany after Berlin and Hamburg. Munich is the largest city in Germany that is no ...

, Germany. He was also active at the IEEE Information Theory Society. In 1992, Hagenauer was elevated to the grade of

IEEE The Institute of Electrical and Electronics Engineers (IEEE) is an American 501(c)(3) organization, 501(c)(3) public charity professional organization for electrical engineering, electronics engineering, and other related disciplines. The IEEE ...

fellow for contribution to the application of convolutional codes to mobile radio and satellite communications. He has been awarded the Erich Regener and Otto Lilienthal Prizes from the German Aerospace Association, and the Armstrong Award from the

IEEE Communications Society The Institute of Electrical and Electronics Engineers (IEEE) is an American 501(c)(3) public charity professional organization for electrical engineering, electronics engineering, and other related disciplines. The IEEE has a corporate office i ...

, and was also elected to the Bavarian Academy of Science. In 2003, he received the

IEEE Alexander Graham Bell Medal The IEEE Alexander Graham Bell Medal is an award honoring ''"exceptional contributions to communications and networking sciences and engineering"'' in the field of telecommunications. The medal is one of the highest honors awarded by the Instit ...

for meritorious achievements in telecommunications.

References

External links

* Engineering & Technology History - Joachim Hagenauer

* IEEE
IEEE Alexander Graham Bell Medal Recipients: 2003 - Joachim Hagenauer (biography)
Institute of Electrical and Electronics Engineers (IEEE) website. Retrieved May 2010. Living people 1941 births German information theorists Academic staff of the Technical University of Munich {{Germany-engineer-stub Academic staff of Technische Universität Darmstadt Technische Universität Darmstadt alumni

See also

References

External links