Joachim Hagenauer
Encyclopedia
Joachim Hagenauer is an information theorist and professor emeritus
at Technical University of Munich
. He pioneered the use of soft bits (see Soft output Viterbi algorithm
), a coding theory
technique that contributes to the high performance of the turbo code
s.
Professor Hagenauer's work enabled the advancement of turbo coding and led to a significant improvement in channel coding for digital communications
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
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
DLR in Oberpfaffenhofen
. In 1993 he became the Chair of the University of Technology's Communications Technology department in Munich, Germany.
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
, and was also elected to the Bavarian Academy of Science
. In 2003 he received the IEEE Alexander Graham Bell Medal
for meritorious achievements in telecommunications.
Emeritus
Emeritus is a post-positive adjective that is used to designate a retired professor, bishop, or other professional or as a title. The female equivalent emerita is also sometimes used.-History:...
at Technical University of Munich
Technical University of Munich
The Technische Universität München is a research university with campuses in Munich, Garching, and Weihenstephan...
. He pioneered the use of soft bits (see Soft output Viterbi algorithm
Soft output Viterbi algorithm
The soft output Viterbi algorithm is a variant of the classical Viterbi algorithm.SOVA differs from the classical Viterbi algorithm in that it uses a modified path metric which takes into account the a priori probabilities of the input symbols, and produces a soft output indicating the reliability...
), a coding theory
Coding theory
Coding theory is the study of the properties of codes and their fitness for a specific application. Codes are used for data compression, cryptography, error-correction and more recently also for network coding...
technique that contributes to the high performance of the turbo code
Turbo code
In information theory, turbo codes are a class of high-performance forward error correction codes developed in 1993, which were the first practical codes to closely approach the channel capacity, a theoretical maximum for the code rate at which reliable communication is still possible given a...
s.
Professor Hagenauer's work enabled the advancement of turbo coding and led to a significant improvement in channel coding for digital communications
Digital signal
A digital signal is a physical signal that is a representation of a sequence of discrete values , for example of an arbitrary bit stream, or of a digitized analog signal...
and storage. His works have been applied to digital receiver
Digital radio
Digital radio has several meanings:1. Today the most common meaning is digital radio broadcasting technologies, such as the digital audio broadcasting system, also known as Eureka 147. In these systems, the analog audio signal is digitized into zeros and ones, compressed using formats such as...
designs, satellite transmissions
Communications satellite
A communications satellite is an artificial satellite stationed in space for the purpose of telecommunications...
and other facets of telecommunications.
Hagenauer received his doctorate
Doctorate
A doctorate is an academic degree or professional degree that in most countries refers to a class of degrees which qualify the holder to teach in a specific field, A doctorate is an academic degree or professional degree that in most countries refers to a class of degrees which qualify the holder...
in 1974 from Darmstadt University of Technology
Darmstadt University of Technology
The Technische Universität Darmstadt, abbreviated TU Darmstadt, is a university in the city of Darmstadt, Germany...
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
German Aerospace Center
The German Aerospace Center is the national centre for aerospace, energy and transportation research of the Federal Republic of Germany. It has multiple locations throughout Germany. Its headquarters are located in Cologne. It is engaged in a wide range of research and development projects in...
DLR in Oberpfaffenhofen
Oberpfaffenhofen
Oberpfaffenhofen is a village which is part of the municipality of Weßling in the district of Starnberg, Bavaria, Germany. It is 20 kilometers from the city center of Munich....
. In 1993 he became the Chair of the University of Technology's Communications Technology department in Munich, Germany.
He has been awarded the Erich Regener and Otto Lilienthal Prizes from the German Aerospace Association, and the Armstrong Award
Edwin Howard Armstrong award
The Major Armstrong award, named after the inventor of FM radio, Edwin Howard Armstrong, is presented "to AM and FM stations for excellence and originality in radio broadcasting" by the Armstrong Memorial Research Foundation at Columbia University...
from the IEEE Communications Society
IEEE Communications Society
The IEEE Communications Society is a professional society of the IEEE. It is also known by the abbreviation ComSoc. The Society focuses on two principal areas: the science of, and education about, communications engineering with the goal of advancing the state of the field; and professional...
, and was also elected to the Bavarian Academy of Science
Bavarian Academy of Sciences and Humanities
The Bavarian Academy of Sciences and Humanities is an independent public institution, located in Munich. It appoints scholars whose research has contributed considerably to the increase of knowledge within their subject...
. In 2003 he received the IEEE Alexander Graham Bell Medal
IEEE Alexander Graham Bell Medal
The IEEE Alexander Graham Bell Medal is an award honoring "exceptional contributions to the advancement of communications sciences and engineering" in the field of telecommunications...
for meritorious achievements in telecommunications.