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Gottfried Ungerboeck

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Adapted from the English Wikipedia article Gottfried Ungerboeck, available under CC BY-SA 4.0Updated 9 August 2025
Gottfried Ungerboeck
Born (1940-03-15) March 15, 1940 (age 86)
Vienna, Austria
OccupationCommunications engineer
Years active1965–present
Known forDevelopment of trellis coded modulation

Gottfried Ungerboeck (born 15 March 1940 in Vienna) is an Austrian expert in communications engineering celebrated for his groundbreaking work in digital communication systems.

He obtained his degree in electrical engineering with a specialization in telecommunications from the Vienna University of Technology in 1964, followed by a doctorate from ETH Zurich in 1970. Ungerboeck began his career at IBM Austria as a systems engineer in 1965 and transferred to the IBM Zurich Research Laboratory two years later.

During his tenure at IBM Zurich, Ungerboeck focused on areas such as digital signal processing, switching networks, communication theory, and information theory. His most notable achievement is the development of trellis coded modulation, a seminal advancement in data transmission methods.

In 1998, he assumed the role of Technical Director for the Communication division at Broadcom, where he applied his extensive knowledge to enhance the company’s communication technology portfolio.

In recognition of his pioneering contributions, he was honored with the prestigious 2018 Claude E. Shannon Award by the IEEE Information Theory Society.

Awards and honours