Contains table of contents for Section 2, an introduction, reports on twenty-two research projects and a list of publications.Sanders, a Lockheed-Martin Corporation Contract BZ4962U.S. Army Research Laboratory Contract DAAL01-96-2-0001U.S. Navy - Office of Naval Research Grant N00014-93-1-0686National Science Foundation Grant MIP 95-02885U.S. Navy - Office of Naval Research Grant N00014-96-1-0930National Defense Science and Engineering FellowshipU.S. Air Force - Office of Scientific Research Grant F49620-96-1-0072U.S. Navy - Office of Naval Research Grant N00014-95-1-0362National Science Foundation Graduate Research FellowshipAT&T Bell Laboratories Graduate Research FellowshipU.S. Army Research Laboratory Contract DAAL01-96-2-0002National Science Foundation Graduate FellowshipU.S. Army Research Laboratory/Advanced Sensors Federated Lab Program Contract DAAL01-96-2-000

Aliberti, Giovanni

Amirtharajah, Rajeevan

Baggeroer, Arthur B.

Barron, Richard J.

Beheshti, Soosan

Chan, Albert

Chandrakasan, Anantha P.

Chen, Brian

Chupp, Darla J.

Draper, Stark

Eggen, Trym H.

Gold, Bernard

Hadjicostis, Christoforos N.

Isabelle, Steven H.

Kschischang, Frank

Laneman, Nicholas J.

Lee, Li

Lopez, Michael J.

Ludwig, Jeffrey T.

Nawab, Hamid S.

Ooi, James M.

Oppenheim, Alan V.

Papadopoulos, Haralabos C.

Preisig, James C.

Said, Maya R.

Secor, Matthew J.

Seefeldt, Alan J.

Sestok, Charles K.

Therrien, Charles

Torres, Wade P.

Verbout, Shawn M.

Wage, Kathleen E.

Wang, Alex Che-Wei

Weinstein, Ehud

Wornell, Gregory W.

Zaganjori, Janice M.

The field of digital signal processing grew out of the flexibility afforded by the use of digital computers in
implementing signal processing algorithms and systems.  It has since broadened into the use of a variety
of both digital and analog technologies, spanning a broad range of applications, bandwidths, and realizations.
The Digital Signal Processing group carries out research on algorithms for signal processing and their applications. Current application areas of interest include signal enhancement and active noise cancellation; speech, audio and underwater acoustic signal processing; advanced beamforming for radar and sonar systems; and signal processing and coding for wireless and broadband multiuser communication networks.
In some of our recent work, we have developed new methods for signal enhancement and noise cancellation
with single or multisensor measurements. We have also been developing new methods for representing
and analyzing fractal signals. This class of signals arises in a wide variety of physical environments and also has potential in problems involving signal design. We are also exploring potential uses of nonlinear dynamics and chaos theory of signal design and analysis. Another emphasis is on structuring algorithms for approximate processing and successive refinement.  In other research, we are investigating applications
of signal and array processing to ocean and structural acoustics and geophysics. These problems
require the combination of digital signal processing tools with a knowledge of wave propagation to
develop systems for short time spectral analysis, wavenumber spectrum estimation, source localization,
and matched field processing. We emphasize the use of real-world data from laboratory and field
experiments such as the Heard Island Experiment for Acoustic Monitoring of Global Warming and several
Arctic acoustic experiments conducted on the polar ice cap.  A major application focus of the group involves signal processing and coding for wireless multiuser systems and broadband communication networks.
Specific interests include commercial and military mobile radio networks, wireless local area networks
and personal communication systems, digital audio and television broadcast systems, and multimedia
networks. Along with a number of other directions, we are currently exploring new code-division multiple-
access (CDMA) strategies, new techniques for exploiting antenna arrays in wireless systems, and new methods for modeling and management of traffic in high-speed packet-switched networks.  Much of our work involves close collaboration with the Woods Hole Oceanographic Institution, MIT Lincoln Laboratory, and a number of high technology companies in the Boston area.Sanders, a Lockheed-Martin CorporationUS Army Research LaboratoryUS Navy - ONRNational Science FoundationNational Defense Science and Engineering FellowshipUS Air Force Office of Scientific ResearchNational Science Foundation Graduate Research FellowshipAT&T Bell Laboratories Graduate Research FellowshipContract BZ4962 (Sanders)Contract DAAL01-96-2-0001 (USARL)
Contract DAAL01-96-2-0002Grant N00014-93-1-0686 (ONR)
Grant N00014-96-1-0930
Grant N00014-95-1-0362Grant MIP 95-02885 (NSF)Grant F49620-96-1-0072 (USAF-OSR

Digital Signal Processing Research Program

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