* Chair, Dallas Chapter of IEEE Signal Processing Society, 2004-2012.
* Visiting Scientist, Texas Instruments, 2011-2012.
* Distinguished Lecturer of IEEE Consumer Eletronics Society, 2009-2010.
* Professor, Department of Electrical Engineering, Texas A&M University,
* Visiting Scientist, Texas Instruments, 2001.
* Associate Professor, Texas A&M University, 1992-1999.
* Adjunct Associate Professor, Baylor College of Medicine, 1994-1999.
* Visiting Scientist, US Army TACOM Research Lab, Summer 1995.
* Assistant Professor, Texas A&M University, 1986-1992.
* Research Scientist, AT&T Bell Labs, Summer 1984.
* Research Scientist, Houston Health Science Center, 1983-1984.
PhD, Electrical and Computer Engineering, Rice University, 1987.
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