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Unnikrishna Pillai

Full Professor Electrical Engineering

    1974 …2019

    Research output per year

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    Research Output

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    Conference contribution
    1984

    A Complex Vector Space Approach to Multiple Source Location and Signal Estimation

    Pillai, U., Haber, F. & Bar-Ness, Y., Oct 1984, Proceedings of DSP Workshop, Chatham, Massachusetts.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1987

    Can Extra Unknown Parameters Hurt?

    Pillai, U. & Haber, F., Sep 1987, Presented at the fifth workshop on Multidimensional Signal Processing, The Delft, Netherlands.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Coherent Signal Classification by Symmetry Considerations

    Pillai, U., Mar 1987, presented at the Conference on Information Systems and Sciences, Johns Hopkins University, Baltimore.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Spatial Spectrum Estimation: A Non-parametric Approach

    Lee, Y. J. & Pillai, U., Aug 1987, Presented at the 30th Midwest Symposium on Circuits and Systems, Syracuse University.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1988

    Angle of Arrival Estimation Based on First Order Statistics

    Pillai, U., Lee, Y. & Youla, D. C., Sep 1988, Presented at the 1988 Digital Signal Processing Workshop, Lake Tahoe, CA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    A Self Inversive Array Processing Scheme for Improved Performance

    Kwon, B. H. & Pillai, U., Mar 1988, Presented at the 22nd Annual Conference on Information Sciences and Systems, Princeton, New Jersey.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Statistics of Generalized Eigenvalues for Signal Parameter Estimation

    Madan, R. N. & Pillai, U., Dec 1988, Proceedings of the Second IMA Conference of Mathematics in Signal Processing, University of Warwick, England.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1989

    A New Spectrum Extension Method that Maximizes the Two Step Prediction Error

    Pillai, U., Nov 1989, Proceedings of Indo-US workshop on Spectrum Analysis in one and two Dimensions, New Delhi, India. p. 385-402 17 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    New resolution threshold results in three source scenes

    Kwon, B. H. & Unnikrishna Pillai, S., Dec 1 1989, Twenty Third Annu Asilomar Conf Signal Syst Comput. Chen, R. R. (ed.). Publ by Maple Press, Inc, p. 772-776 5 p. (Conference Record - Asilomar Conference on Circuits, Systems & Computers; vol. 2).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Three Source Scenes--New Results on Signal Resolution

    Kwon, B. H. & Pillai, U., Nov 1989, Presented at the Twenty Third Annual Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1991

    Design of Linear Phase FIR Filters with Uniformly Flat Band-Response

    Pillai, U. & Madan, R. N., Nov 1991, Proceedings of the Twenty-Fifth Annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA. p. 1015-1020 5 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Improvements on the Cramer-Rao bound

    Pillai, S. U. & Sinha, N. D., Dec 1 1991, Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing. Publ by IEEE, p. 3565-3568 4 p. (Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing; vol. 5).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Multi-channel Rational Approximation and Wide band Signal Processing

    Pillai, U. & Shim, T. I., Oct 1991, Presented at the Underwater Signal Processing Workshop, Kingston, Rhode Island.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1992

    A new approach to system identification and rational approximation

    Unnikrishna Pillai, S., Shim, T. I. & Youla, D. C., Jan 1 1992, Conference Record of the 26th Asilomar Conference on Signals, Systems and Computers, ACSSC 1992. IEEE Computer Society, p. 199-203 5 p. 269286. (Conference Record - Asilomar Conference on Signals, Systems and Computers).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Generalization of the Maximum Entropy Concept and Certain ARMA Processes

    Pillai, U. & Shim, T. I., Jul 1992, Proceedings of the 12th International Maximum Entropy Workshop, CNRS, Paris, France.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Identification of nonminimum phase rational systems

    Pillai, S. U. & Lee, W. C., Jan 1 1992, 1992 IEEE 6th SP Workshop on Statistical Signal and Array Processing, SSAP 1992 - Conference Proceedings. Institute of Electrical and Electronics Engineers Inc., p. 408-411 4 p. 246871. (1992 IEEE 6th SP Workshop on Statistical Signal and Array Processing, SSAP 1992 - Conference Proceedings).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Identification of Non-Minimum Phase Rational Systems

    Pillai, U. & Lee, W. C., Oct 1992, Proceedings of the Sixth SSAP Workshop On Statistical, Signal, and Array Processing, Victoria, British Columbia, Canada.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Maximally flat low and high-pass reactance-ladder diplexers with adjustable crossover attenuation

    Youla, D. C., Pillai, S. U., Winter, F. & Lee, W. C., Jan 1 1992, 1992 IEEE International Symposium on Circuits and Systems, ISCAS 1992. Institute of Electrical and Electronics Engineers Inc., p. 2057-2060 4 p. 230370. (Proceedings - IEEE International Symposium on Circuits and Systems; vol. 4).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Non-Minimum Phase Systems and a Geometrical Approach to the Double-Extension Problem

    Pillai, U. & Lee, W. C., Oct 1992, Proceedings of the 26th Annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Non-minimum phase systems and a geometrical solution to the double-extension problem

    Unnikrishna Pillai, S. & Lee, W. C., Jan 1 1992, Conference Record of the 26th Asilomar Conference on Signals, Systems and Computers, ACSSC 1992. IEEE Computer Society, p. 493-497 5 p. 269223. (Conference Record - Asilomar Conference on Signals, Systems and Computers).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Rational Modeling of Distributed Systems

    Pillai, U. & Shim, T. I., Jul 1992, Proceedings of the IEEE Regional Control Conference, Polytechnic University, Brooklyn, New York. p. 20-24 4 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Stable Pole Extraction From Scattering Data

    Pillai, U. & Shim, T. I., Oct 1992, Proceedings of the International Conference on Ultra-Wideband, Short-Pulse Electromagnetics, Polytechnic University, Brooklyn, NY.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1993

    Multichannel rational system identification

    Pillai, S. U. & Shim, T. I., Dec 1 1993, Conference Record of the Asilomar Conference on Signals, Systems & Computers. Singh, A. (ed.). Publ by IEEE, p. 184-188 5 p. (Conference Record of the Asilomar Conference on Signals, Systems & Computers; vol. 1).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Parametrization of stable systems from impulse response data

    Pillai, S. U. & Lee, W. C., Dec 1 1993, Conference Record of the Asilomar Conference on Signals, Systems & Computers. Singh, A. (ed.). Publ by IEEE, p. 174-178 5 p. (Conference Record of the Asilomar Conference on Signals, Systems & Computers; vol. 1).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1994

    Model order reduction of multichannel stable systems

    Lee, W. C. & Pillai, S. U., Jan 1 1994, Conference Record - 28th Asilomar Conference on Signals, Systems and Computers, ACSSC 1994. IEEE Computer Society, p. 410-414 5 p. 471486. (Conference Record - Asilomar Conference on Signals, Systems and Computers; vol. 1).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Model Order Reduction of Multi-channel Stable Systems

    Lee, W. C. & Pillai, U., Nov 1994, Proceedings of the 28th Annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Resonant Mode Extraction from Scattered Noisy Data

    Pillai, U. & Oh, H. S., Nov 1994, Proceedings of the 28th Annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1995

    Beamforming for efficient interference suppression in a mobile communication environment

    Lee, W. C. & Unnikrishna Pillai, S., Jan 1 1995, Conference Record of the 29th Asilomar Conference on Signals, Systems and Computers, ACSSC 1995. Singh, A. (ed.). IEEE Computer Society, p. 771-775 5 p. 540805. (Conference Record - Asilomar Conference on Signals, Systems and Computers; vol. 2).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Beam forming for Efficient Interference Suppression in a Mobile Communication Environment

    Lee, W. C. & Pillai, U., Nov 1995, Proceedings of the 29th Annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Efficient Multi-channel Space-Time Whitening Filters

    Guerci, J. R. & Pillai, U., Mar 1995, Proceedings of the third annual workshop on Adaptive Sensor Array Processing, Lincoln Laboratory, MIT, Lexington, MA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Identification of Non-minimum Phase Systems and Wide-band Array Signal Processing

    Pillai, U., Feb 1995, Navy Wideband RF Science and Technology Workshop, NRaD, San Diego, CA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Multichannel space-time adaptive processing

    Pillai, S. U., Lee, W. C. & Guerci, J., Jan 1 1995, Conference Record of the 29th Asilomar Conference on Signals, Systems and Computers, ACSSC 1995. Singh, A. (ed.). IEEE Computer Society, p. 1183-1186 4 p. 540886. (Conference Record - Asilomar Conference on Signals, Systems and Computers; vol. 2).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Multi-channel Space-Time Adaptive Processing

    Pillai, U., Lee, W. C. & Guerci, J. R., Nov 1995, Proceedings of the 29th Annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1997

    An Efficient Implicit Interference Subspace Removal Technique for STAP

    Pillai, U., Kim, Y. L. & Guerci, J. R., Mar 1997, Proceedings of the 5th Annual workshop on Adaptive Sensor Array Processing, Lincoln Laboratory, MIT, Lexington, MA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1998

    Generalized forward/backward subaperture smoothing techniques for sample starved STAP

    Pillai, S. U., Guerci, J. R. & Kim, Y. L., Dec 1 1998, Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 1998. p. 2501-2504 4 p. 681659. (ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings; vol. 4).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Optimal loading factor for minimal sample support space-time adaptive radar

    Kim, Y. L., Pillai, S. U. & Guerci, J. R., Dec 1 1998, Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 1998. p. 2505-2508 4 p. 681660. (ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings; vol. 4).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Strategies for Minimal Sample Support STAP

    Pillai, U., Kim, Y. L. & Guerci, J. R., Mar 1998, Proceedings of the 6th Annual Workshop on Adaptive Sensor Array Processing, Lincoln Laboratory, MIT, Lexington.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1999

    Optimum transmit-receiver design in the presence of signal-dependent interference and channel noise

    Pillai, S. U., Youla, D. C., Oh, H. S. & Guerci, J. R., Jan 1 1999, Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers. Matthews, M. B. (ed.). Institute of Electrical and Electronics Engineers Inc., p. 870-875 6 p. 831834. (Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers; vol. 2).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2000

    Application of the Khatri-Rao Product to Statistical Array Processing

    Guerci, J. R. & Pillai, U., Mar 2000, International conference on Statistics: Reflections on the Past and Visions for the Future, San Antonio, TX.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Multichannel matched transmit-receiver design in presence of signal-dependent interference and noise

    Pillai, S. U., Oh, H. S. & Guerci, J. R., Jan 1 2000, Proceedings of the 2000 IEEE Sensor Array and Multichannel Signal Processing Workshop, SAME 2000. IEEE Computer Society, p. 385-389 5 p. 878035. (Proceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop; vol. 2000-January).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Theory and Application of Adaptive Transmitter Radar

    Guerci, J. R. & Pillai, U., Mar 2000, Proceedings of the Adaptive Sensor Array Processing (ASAP) Workshop, MIT Lincoln Laboratory, Lexington, MA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2001

    Optimized Target Detection and Identification using Full-Polarization Radar Waveforms

    Garren, D. A., Osborn, M. K., Odom, A. C., Goldstein, J. S., Pillai, U. & Guerci, J. R., Mar 2001, Proceedings of the Adaptive Sensor Array Processing Workshop, MIT Lincoln Laboratory, Lexington, MA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2002

    Joint optimal TX-RX design for multiple target identification problem

    Pillai, S. U., Guerci, J. R. & Radhakrishnan Pillai, S., Jan 1 2002, 2002 IEEE Sensor Array and Multichannel Signal Processing Workshop Proceedings, SAME 2002. IEEE Computer Society, p. 553-556 4 p. 1191101. (Proceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop; vol. 2002-January).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Optimized Multichannel Waveforms with Application to Polarimetrics

    Pillai, U. & Guerci, J. R., Mar 2002, Proceedings of the Adaptive Sensor Array Processing Workshop, MIT Lincoln Laboratory, Lexington, MA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2003

    Performance analysis of data sample reduction techniques for STAP

    Pillai, S. U., Guerci, J. R. & Pillai, S. R., Jan 1 2003, IEEE International Symposium on Phased Array Systems and Technology 2003, Array 2003. Institute of Electrical and Electronics Engineers Inc., p. 565-570 6 p. 1257043. (IEEE International Symposium on Phased Array Systems and Technology; vol. 2003-January).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2004

    Multi-channel Waveform Diversity for Improved Target Identification

    Pillai, U., Feb 2004, Second Tri-Service Waveform Diversity Workshop, Verona, NY.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Receiver design for rapidly time-varying channels

    Sgraja, C., Lindner, J. & Pillai, S. U., 2004, IEEE International Symposium on Information Theory - Proceedings. p. 553 1 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2005

    Geometrical Considerations for Terrain Mapping in SBR Applications

    Li, K. Y., Mangiat, S., Pillai, U. & Himed, B., May 2005, 2005 IEEE International Radar Conference, Arlington , VA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Orthogonal pulsing schemes for improved target detection in space based radar

    Pillai, S. U., Himed, B. & Li, K. Y., Dec 1 2005, Proceedings - 2005 IEEE Aerospace Conference. 1559510. (IEEE Aerospace Conference Proceedings; vol. 2005).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2006

    Cramer-Rao bounds for target doppler and power in space based radar

    Pillai, S. U., Li, K. Y. & Himed, B., Dec 1 2006, 2006 IEEE Radar Conference. p. 452-458 7 p. 1631839. (IEEE National Radar Conference - Proceedings).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution