Skip Navigation

Electrical Engineering



Michael W. Hoffman
Professor and Undergraduate Advisor


Michael W. Hoffman

Contact:

Michael W. Hoffman

Education

  • Ph.D., 1992 University of Minnesota Minneapolis, MN
  • M.S.E.E., 1987 University of Southern California Los Angeles, CA
  • B.S.E.E., 1985 Rice University Houston, TX
 

Curriculum Vitae

1 Education and Employment History:

  • 1.1 Education History

    University of Minnesota 9/88 - 12/92 Ph. D.
    Minneapolis, MN Electrical Engineering

    University of Southern California 8/85 - 6/87 M. S.
    Los Angeles, CA Electrical Engineering

    Rice University 8/81 - 5/85 B. S. Houston, TX Electrical Engineering

  • 1.2 Employment History

    • Professor, Department of Electrical Engineering, University of Nebraska, Aug. 2008 - present •
    • Associate Professor, Department of Electrical Engineering, University of Nebraska, Aug. 1999 - 2008
    • Assistant Professor, Department of Electrical Engineering, University of Nebraska, Jan. 1993 - Aug. 1999
    • Research Assistant and Instructor, Department of Electrical Engineering, University of Minnesota, June 1988 - Dec. 1992.
    • Systems Engineer, TRW Inc., Space Communications Division, June 1985-Aug. 1988. Conducted studies into both phased array antenna systems and adaptive multiple beam antenna systems and worked as a unit engineer on closed government projects

2 Research Accomplishments:

  • 2.1 Selected Peer Reviewed Journal Publications in print:

    underline indicates student author, subscript 1 indicates M.S. under my supervison, subscript 2 indicates Ph.D. under my supervision

    • N. Schemm2, S. Balkir, M.W. Hoffman, A 4μW CMOS Front End for Particle Detec- tion Applications, IEEE Transactions on Circuits and Systems II: Express Briefs, Vol. 57, No.2, pp. 100-104, Feb., 2010.
    • J. Xu1, M. W. Hoffman, B. L. Cheong, and R. D. Palmer “Simulation of Coherent Radar Imaging Using Continuous Wave Noise Radar, Journal of Atmospheric and Oceanic Technology, Vol. 26, Iss. 9, pp. 1956-1967, Sept., 2009, DOI: 10.1175/2009JTECHA1194.1
    • Q. Hu, Z. Liang, and M. W. Hoffman “Detecting Source Regions of Intraseasonal Oscillations in the Tropical Atmosphere by Applying Beamforming to Interpolated Data Grids, Journal of the Atmospheric Science, Vol. 26, Iss. 2, pp. 270-280, Feb. 2009, DOI: 10.1175/2008JTECHA1121.1.
    • Z. Lin2, M. W. Hoffman, N. Schemm2, W. D. Leon-Salas, and Sina Balkir “A CMOS Image Sensor for Multi-level Focal Plane Image Decomposition,” IEEE Trans. on Circuits and Systems - I, Vol. 55, Iss.. 9, pp. 2561-2572, Oct. 2008, doi:10.1109/TCSI.2008.920094
    • B. L. Cheong2, T.-Y. Yu, R. D. Palmer, K.-F. Yang, M. W. Hoffman, S. J. Frasier, and F. J. Lopez-Dekker, “Effects ofWind Field Inhomogeneities on Doppler Beam Swinging Revealed by an Imaging Radar,” Journal of Atmospheric and Oceanic Technology, Vol. 25, pp 1414-1422, August, 2008.
    • D. K. Neumann1, M. W. Hoffman and S. Balkir “Dual-Antenna RF CMOS Front- End for Interferer Removal in Ultra-Wideband Systems,” Circuits Systems and Signal Processing, Vol. 27, Number 3, pp. 381-390, DOI: 10.1007/s00034-008-9029-8, June, 2008.
    • D. Leon, S. Balkir, K. Sayood, N. Schemm2, and M. W. Hoffman, “A CMOS imager with focal plane compression using predictive coding,” IEEE Journal of Solid-State Circuits, Vol. 42, No. 11, pp. 2555-2572, Nov. 2007.
    • B. L. Cheong2, M. W. Hoffman, R. D. Palmer, S. J. Frasier, and F. J. L´opez-Dekker, “Phased Array Design for Biological Clutter Rejection: Simulation and Experimental Validation,” Journal of Atmospheric and Oceanic Technology, Vol. 23, Issue 4, pp. 585-598, April 2006.
    • B. L. Cheong2, M. W. Hoffman, R. D. Palmer, S. J. Frasier, and F. L. Dekker, “Pulse Pair Beamforming and the Effects of Reflectivity Field Variations on Imaging Radars,” Radio Science, 39, RS3014, doi:10.1029/2002RS002843, 2004.
    • B.D. Pettijohn1, M.W. Hoffman, and K. Sayood. “Joint source/channel coding using arithmetic codes,” IEEE Trans. on Communications, vol. 49, No. 5, pp. 826-836, May 2001.
    • M.W. Hoffman, Z. Li2, and D. Khataniar2, “GSC-based spatial voice activity detection for enhanced speech coding in the presence of competing speech”, IEEE Transactions on Speech and Audio Processing, vol. 9, No. 2, pp. 175-179, February, 2001.
    • M.W. Hoffman and K.M. Buckley. “Robust time-domain processing of broadband acoustic data”. IEEE Transactions on Speech and Audio Processing, vol.3, pp. 193- 203, May. 1995.
    • M.W. Hoffman, T. Trine, K.M. Buckley, and D.J. Van Tasell. “Robust microphone array processing for hearing aids: Realistic speech enhancement predictions”. Journal of the Acoustical Society of America, Vol.96, pp. 759-770, Aug. 1994.
  • 2.2 Books and Book Chapters:

    • D. Bi2, M.W. Hoffman, and K. Sayood “Joint Source Channel Coding Using Arithmetic Codes,” 77 pages, (doi:10.2200/S00222ED1V01Y200911COM004), Morgan-Claypool Inc., 2009.
    • M.W. Hoffman, “Lossless bi-level image compression,” in Lossless Compression Handbook , edited by K. Sayood, Academic Press, Inc., 2003.
    • M.W. Hoffman, “JPEG-LS standard for lossless and near-lossless image compression,” in Lossless Compression Handbook, edited by K. Sayood, Academic Press, Inc., 2003.
    • M.W. Hoffman and K. Sayood, “Still image compression,” in Multimedia Communications: Directions and Innovations, edited by J.D. Gibson, Academic Press, Inc., August, 2000.
  • 2.3 Research Funding:

    • Department of Energy, “All Solid-State Wireless Sensor Network for Nuclear Prolifer- ation Detection,” $417,191. Support dates 9/06 - 8/10, PI’s S. Balkir, M. Hoffman.
    • Army Research Office, “Atmospheric Boundary Layer Structure and Dynamics Re- vealed Through Adaptive Imaging Techniques,” $294,176. Support dates 4/01 - 3/05, PI - R. Palmer, co-PI M. Hoffman.
    • Other funded projects include funding from the Whitaker Foundation and National Science Foundation as sole PI, and the Air Force Office of Scientific Research as co-PI.
  • 2.4 Patent Activities:

    • U.S. Patent: US 6,981,010 B1 System and Method for Generating Pseudo-Noise Se- quences, S. Balkir, W. Leon, M. Hoffman, and L. Perez. Issued Dec. 27, 2005.
    • U.S. Patent: US 6,892,343 B2 System and Method for Joint Source-Channel Cod- ing with Symbol Decoding and Error Correction, K. Sayood, M. Hoffman and B. D. Pettijohn. Issued May 10, 2005.

3 Graduate Advising and Teaching

  • 3.1 PhD Students

    • Nathan Schemm, “A Single-Chip Ultra-Wideband Based Wireless Sensor Network Node”, Ph.D., Dec. 2010, co-advisor S. Balkir, grant funded.
    • Zhiqiang Lin, “CMOS Image Sensor with Focal Plane SPIHT Image Compression,” Ph.D., January 2008.
    • Dongsheng Bi “State Machine Interpretation of Arithmetic Codes for Joint Source and Channel Coding,” Ph.D., August 2006, co-advisor K. Sayood, grant funded.
    • Boon Leng Cheong “Adaptive Array Processing Using the Turbulent Eddy Profiler,” Ph.D., May, 2005, co-advisor R. Palmer, grant funded.
    • Zhao Li, “Robust speech coding using microphone arrays,” Ph.D., Feb. 1998, grant funded.
  • 3.2 MS Students

    • C. Aaron Hall, “The FBLMS Adaptive Filter Applied as an Acoustic Echo Canceller on a Texas Instruments TMSC64X DSP,” May 2009 full-time industrial MS.
    • Dirk Neumann, “Dual Input UWB Interference Canceling Front End in CMOS,” M.S., August, 2007, co-advised with S. Balkir, grant funded.
    • Jing Xu, “Simulation of Coherent Radar Imaging Using ContinuousWave Noise Radar,” M.S., December, 2006.
    • Daniel White, “A Low-Power Class-D CMOS Amplifier,” M.S., December 2006. • Venkata Syam Sundar Tellabati, “Antenna Array Calibration Techniques for Atmo- spheric Imaging Radars,” M.S., August 2005, co-advised with R. Palmer, grant funded.
    • Lifeng Xu, “Iterative Joint Source Channel Coding Using Arithmetic Codes,” M.S., December, 2004, co-advised with K. Sayood.
    • David McCreight, “The Effecct of FM Discrimination Induced Phase Wraps on  4 DQPSK Signal Detection,” M.S., December 2003, full-time industrial MS. 4
    • Hui Tong, “Application of Adaptive Arrays to Atmospheric Remote Sensing,” M.S. August 2003, co-advised with R. Palmer, grant funded.
    • Boon Leng Cheong, “Joint Beamforming and MBE Vocoding of Noisy Speech Using a Microphone Array,” M.S. May 2002, grant funded.
    • EiMon Phyu, “High Quality Speech Coding,” M.S., August 2001, co-advised with K. Sayood.
    • Jason S. Smith “Real-time DSP test platform for multiple microphone systems,” M.S., May 2001, grant funded.
    • Cenk Demiroglu, “A new technique for joint source channel coding using arithmetic codes,” M.S., December 2000, co-advised with K. Sayood, grant funded.
    • Gulay Ozkan, “Robust joint source channel coding of images using variable length codes,”, M.S., December 2000, co-advised with K. Sayood.
    • Ramazan Kerek, “Implementation and evaluation of recursively indexed vector quan- tization on multiple use environmental datasets,” M.S., August 2000, co-advised with K. Sayood, grant funded.
    • Qianying Bao, “Multiple description image coding for noisy channels by vector quan- tization,” M.S., May 2000, co-advised with K. Sayood, grant funded.
    • Billy D. Pettijohn, “Joint source/channel coding using arithmetic codes,” M.S., April 2000, co-advised with K. Sayood, grant funded.
    • XiaoFeng Lu, “Calibration and evaluation of adaptive microphone arrays,” M.S., April 1998, grant funded.
    • Chad Pinkelman, “Real-time implementation of adaptive spatial filters,” M.S., May 1997, grant funded.
  • 3.3 Courses Taught:

    • A wide variety and large number of semester long courses offered at UNL since 1993
    • Elec 915 Adaptive Signal Processing - spring ’03, spring ’04, spring ’05, spring ’07, spring ’09, spring ’11
    • Elec 946 Detection and Estimation - fall ’06
    • Elec 911 Communication Theory - spring ’94, spring ’96
    • Elec 498/898 Biomedical Signal and Image Processing - spring ’06, spring ’07
    • Elec 495 Senior Design Lab II - spring ’98, spring ’99, spring ’00, spring ’02, spring ’03, fall ’04, fall ’05 5
    • Elec 494 Senior Design Lab I - fall ’97, fall ’98, fall ’99, fall ’01, fall ’02, spring ’04, spring ’05
    • Elec 465/865 Data Compression - spring ’95, spring ’97
    • Elec 464/864 Digital Communication Systems - spring ’93, fall ’94, fall ’95, fall ’96, spring ’09, spring ’10
    • Elec 463/863 Digital Signal Processing - spring ’98, fall ’98, fall ’99, fall ’00, fall ’01, fall ’02, fall ’04, fall ’05, fall ’08, fall ’10
    • Elec 462/862 Communication Systems - fall ’93, spring ’94, fall ’94, spring ’95
    • Elec 410/810 Introduction to Random Processes - fall ’00, fall ’07, fall ’09
    • Elec 121 Introduction to Electrical Engineering - fall ’96, spring ’00, fall ’03 (2 sections), fall ’09, fall ’10
  • 3.4 Course Development:

    • Elec 121-122 Introduction to Electrical Engineering - Redesign sequence to provide broader basis for introductory course and emphasise key technical material for the major - fall 2009 (ongoing).
    • Elec 494-495 Senior Design Laboratory - Redesign sequence to assure compliance with ABET 2000 requirements - spring 2001.
    • Elec 498/898 Biomedical Signal and Image Processing - New Course in spring of 2006. Laboratory project based course that focuses on Biomedical applications of signal and image processing – with fundamental signal and image processing ideas presented as needed. Projects topics have included multi-band compressive hearing aids, tomographic simulation and image reconstruction, DNA microarray processing, and fetal ECG extraction. • Elec 915 Adaptive Signal Processing - New Course in spring of 2003. Simulation based advanced graduate course that explores key issues in adaptive signal processing including: algorithms and convergence; time, frequency, and transform domain tech- niques; and simulation applications to real world problems such as noise cancelling, modelling, equalization, and echo-cancellation.
    • Elec 463/863 - Digital Signal Processing. Added significant Matlab-based com- puter exercises to existing course, including: filter design, use and evaluation; discrete- time simulation studies; and student selected projects.