Algorithm design, analysis, and implementation for signal processing and communications systems.

EDUCATION

UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN

Ph.D. Candidate in Electrical Engineering, summer 1999. Proposed dissertation title is ``Source and Channel Coding of Images for Noisy Channels.'' Other research interests include signal processing, communication networks, and cryptography.

MASSACHUSETTS INSTITUTE OF TECHNOLOGY

M.S. Electrical Engineering June 1990.     Thesis: "Channel Coding for a 4.8 KBPS Vocoder" B.S. Electrical Engineering June 1990. B.S. Physics June 1990.

TECHNICAL SKILLS

   Programming: Ada, C, C++, Lisp, Mathematica, Matlab, Occam, Perl, X Windows/Motif.
   Computers/OS: Unix system administration (HP-UX, Linux, Solaris), MacIntosh, MS-DOS/Windows/NT.
   DSP Chips: TI TMS320C25, TI TMS320C30, and INMOS Transputers.
   Familiar with the following standards: JPEG, MPEG, H.263.

CLEARANCES

   Active Secret level. Have held TS/SBI.

EXPERIENCE

6/97 - present San Diego, CA

TRW Avionics Systems Division Systems Engineer (part-time) Design, analysis, and implementation of signal processing algorithms in support of a digital radio function for voice and data communications.

8/93 - present Urbana, IL

University of Illinois, Department of Electrical Engineering Research Assistant / Teaching Assistant Research work in error protection techniques for wavelet-based image compression algorithms. Other research includes investigation of progressive image compression algorithms and queuing disciplines for delay-constrained packet networks. Worked as a teaching assistant for a graduate course in information theory and a grader for a course in source coding. Other duties include system administration of the group's workstations including HP, Sun, and PC/Linux architectures. Handled complete set up of computer lab at UCSD including selection of new equipment and all computer configuration.

6/90 - 8/93 Vienna, VA

Engineering Research Associates Software/Systems Engineer Designed and implemented signal processing algorithms and control code for real-time systems. Developed algorithms for characterizing and classifying radar pulse data including a transputer based simulation of the algorithms. Other work included: development of algorithms utilizing time-frequency distributions and cyclostationary signal processing, development of a programming tool for the transputer, modification of a digital signal processing testbed program, development of test code for transputer based hardware, and evaluation of algorithms to determine the performance on a future transputer.

6/89 - 1/90 Clarksburg, MD

Comsat Laboratories Worked on a project to build a prototype system for the proposed INMARSAT Standard-M mobile satellite voice codec. Designed channel coding and error suppression techniques for the 4.8 kbps vocoder and implemented the algorithm on a DSP chip.

9/88 - 6/89 Cambridge, MA

MIT Department of Electrical Engineering Worked as a laboratory teaching assistant for an undergraduate course in signals and systems.

6/88 - 9/88 Clarksburg, MD

Comsat Laboratories Worked as a part of the MIT 6-A cooperative education program on the study of systolic arrays for real-time signal processing. Investigated efficient algorithms and architectures for VLSI implementation and fault tolerance.

PUBLICATIONS    (abstracts and downloads available here...)

	P. G. Sherwood and K. Zeger, ``Macroscopic multistage image compression for robust transmission over noisy channels,'' in Proceedings of the SPIE, 1999, vol. 3653.
	P. G. Sherwood and K. Zeger, ``Error protection for progressive image transmission over memoryless and fading channels,'' IEEE Trans. on Communications, vol. 46, no. 12, pp.1555-9, Dec. 1998.
	P. C. Cosman, J. K. Rogers, P. G. Sherwood, and K. Zeger, ``Image Transmission over Channels with Bit Errors and Packet Erasures,'' Thirty-Second Asilomar Conference on Signals, Systems, and Computers, 1998.
	P. G. Sherwood and K. Zeger, ``Error protection for progressive image transmission over memoryless and fading channels,'' IEEE International Conference on Image Processing, 1998.
	P. G. Sherwood and K. Zeger, ``Error protection of wavelet coded images using residual source redundancy,'' Thirty-First Asilomar Conference on Signals, Systems, and Computers, 1997, vol. 2, pp. 980-984.
	T. Frajka, P. G. Sherwood and K. Zeger, ``Progressive image coding with spatially variable resolution,'' IEEE International Conference on Image Processing, 1997, vol. 1, pp. 53-56.
	P. G. Sherwood and K. Zeger. ``Progressive image coding for noisy channels,'' IEEE Sig. Proc. Letters, vol. 4, no. 7, pp. 189-191, July 1997.
	P. G. Sherwood and K. Zeger, ``Progressive image coding on noisy channels,'' in Proceedings DCC '97. Data Compression Conference, 1997, pp. 72-81.

MEMBERSHIPS IN PROFESSIONAL ORGANIZATIONS AND HONORARY SOCIETIES

   Member of Sigma Pi Sigma, Tau Beta Pi, and the IEEE.


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