A MAP estimate that maximizes entropy - An alternative interpretation for an autoregressive model. - S. Unnikrishna Pillai (Proc. IEEE, 1985)

A new approach to array geometry for improved spatial spectrum estimation. - S. Unnikrishna Pillai; Yeheskel Bar-Ness; Fred Haber (Proc. IEEE, 1985)

Statistical analysis of a high resolution spatial spectrum estimator utilizing an augmented covariance matrix. - S. Unnikrishna Pillai; Fred Haber (IEEE Trans. Acoust. Speech Signal Process., 1987)

An algorithm for optimal placement of sensor elements. - Youngjik Lee; S. Unnikrishna Pillai (ICASSP, 1988)

Forward/backward spatial smoothing techniques for coherent signal identification. - S. Unnikrishna Pillai; Byung Ho Kwon (IEEE Trans. Acoust. Speech Signal Process., 1989)

Performance analysis of MUSIC-type high resolution estimators for direction finding in correlated and coherent scenes. - S. Unnikrishna Pillai; Byung Ho Kwon (IEEE Trans. Acoust. Speech Signal Process., 1989)

Coherent signal classification using symmetry considerations. - S. Unnikrishna Pillai; Youngjik Lee (IEEE Trans. Acoust. Speech Signal Process., 1989)

Generalization of maximum entropy spectrum extension method. - S. Unnikrishna Pillai (ICASSP, 1990)

Image reconstruction from one bit of phase information. - S. Unnikrishna Pillai; Brig Elliott (J. Vis. Commun. Image Represent., 1990)

An algorithm for near-optimal placement of sensor elements. - David Pearson; S. Unnikrishna Pillai; Youngjik Lee (IEEE Trans. Inf. Theory, 1990)

Improvements on the Cramer-Rao bound. - S. Unnikrishna Pillai; Nikhileshwar D. Sinha (ICASSP, 1991)

A new spectrum extension method that maximizes the multistep minimum prediction error-generalization of the maximum entropy concept. - S. Unnikrishna Pillai; Theodore I. Shim; M. Hafed Benteftifa (IEEE Trans. Signal Process., 1992)

A new technique for ARMA-system identification and rational approximation. - S. Unnikrishna Pillai; Theodore I. Shim; Dante C. Youla (IEEE Trans. Signal Process., 1993)

Uniqueness of a two-step predictor based spectral estimator that generalizes the maximum entropy concept. - Theodore I. Shim; S. Unnikrishna Pillai; Won Cheol Lee (IEEE Trans. Signal Process., 1993)

Parametrization of stable systems from impulse response data. - S. Unnikrishna Pillai; Won Cheol Lee (ICASSP (4), 1994)

Efficient space-time adaptive processing for airborne MTI-mode radar. - Joseph R. Guerci; S. Unnikrishna Pillai; Younglok L. Lim (ICASSP, 1996)

Multichannel stable systems that extend the partial impulse response matrices. - Won Cheol Lee; S. Unnikrishna Pillai (IEEE Trans. Signal Process., 1996)

Two-Dimensional Blind Deconvolution Using a Robust GCD Approach. - S. Unnikrishna Pillai; Ben Liang 001 (ICIP (1), 1997)

A new study of the problem of compatible impedances. - Dante C. Youla; Fred Winter; S. Unnikrishna Pillai (Int. J. Circuit Theory Appl., 1997)

Optimal loading factor for minimal sample support space-time adaptive radar. - Younglok L. Lim; S. Unnikrishna Pillai; Joseph R. Guerci (ICASSP, 1998)

Blind image deconvolution using a robust GCD approach. - S. Unnikrishna Pillai; Ben Liang 001 (IEEE Trans. Image Process., 1999)

Optimal transmit-Receiver design in the presence of signal-dependent interference and channel noise. - S. Unnikrishna Pillai; Hyun Seok Oh; Dante C. Youla; Joseph R. Guerci (IEEE Trans. Inf. Theory, 2000)

Generalized forward/backward subaperture smoothing techniques for sample starved STAP. - S. Unnikrishna Pillai; Younglok L. Lim; Joseph R. Guerci (IEEE Trans. Signal Process., 2000)

Optimum MIMO transmit-receiver design in presence of interference. - S. Unnikrishna Pillai; Hyun Seok Oh (ISCAS (4), 2003)

Receiver design for rapidly time-varying channels. - Christian Sgraja; Jürgen Lindner; S. Unnikrishna Pillai (ISIT, 2004)

The Perron-Frobenius theorem: some of its applications. - S. Unnikrishna Pillai; Torsten Suel; Seunghun Cha (IEEE Signal Process. Mag., 2005)

Adaptive transmitter weight design for clutter suppression. - S. Unnikrishna Pillai; Ke Yong Li; Braham Himed (CIP, 2010)

Angle-Doppler processing using sparse regularization. - Ivan W. Selesnick; S. Unnikrishna Pillai; Ke Yong Li; Braham Himed (ICASSP, 2010)