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Biography

Gottfried Ungerboeck is an Austrian communications engineer. He received a Dipl. Ing. degree in electrical engineering with emphasis on telecommunications from the Vienna University of Technology in 1964. Thereafter he worked at IBM Austria as a computer systems engineer. – In 1967 he joined the IBM Zurich Research Laboratory, where his initial work dealt with digital speech signal processing. In parallel he developed a strong interest in communication and information theory. In 1970 he received a Ph.D. degree from the Swiss Federal Institute of Technology in Zurich (ETHZ) with a thesis on the optimum detection of distorted binary signals in Gaussian noise. Well-known among his contributions to the theory of data transmission is his invention of trellis coded modulation (TCM) in 1976-1978. As an application-oriented engineer he developed programmable digital signal processors (DSPs), which were used for the realization of fully operational voice-band modems employing TCM and other new concepts. Other projects led to the introduction of partial response signaling with maximum likelihood sequence detection (PRML) in hard-disk drives, a first satellite modem employing TCM, LAN transceivers for high-speed transmission over twisted-pair copper wires, etc.. — In 1998 he joined Broadcom Corporation as a technical director in the communication business line. He was engaged in DOCIS cable modems, DSL technology, terrestrial digital TV transmission, advanced FEC coding for optical channels, Ethernet transceivers – specifically 10GBASET, and participated in related ITU and Â鶹´«Ã½AV standard developments. After his retirement in 2009 he taught courses on classical and modern channel coding at NDU, KAIST, TUM, and ETHZ until 2013. — Ungerboeck’s recognitions include the 1984 Information Theory Group Prize Paper Award. He is the recipient of many other awards.