| 2010 | ICASSP | Angle-Doppler processing using sparse regularization. | Ivan W. Selesnick, S. Unnikrishna Pillai, Ke Yong Li, Braham Himed |
| 2004 | ISIT | Receiver design for rapidly time-varying channels. | Christian Sgraja, Jrgen Lindner, S. Unnikrishna Pillai |
| 2003 | ISCAS | Optimum MIMO transmit-receiver design in presence of interference. | S. Unnikrishna Pillai, Hyun Seok Oh |
| 1998 | ICASSP | Optimal loading factor for minimal sample support space-time adaptive radar. | Younglok L. Lim, S. Unnikrishna Pillai, Joseph R. Guerci |
| 1998 | ICASSP | Generalized forward/backward subaperture smoothing techniques for sample starved STAP. | S. Unnikrishna Pillai, Joseph R. Guerci, Younglok L. Lim |
| 1997 | ICIP | Two-Dimensional Blind Deconvolution Using a Robust GCD Approach. | S. Unnikrishna Pillai, Ben Liang |
| 1996 | ICASSP | Efficient space-time adaptive processing for airborne MTI-mode radar. | Joseph R. Guerci, S. Unnikrishna Pillai, Younglok L. Lim |
| 1994 | ICASSP | Parametrization of stable systems from impulse response data. | S. Unnikrishna Pillai, Won Cheol Lee |
| 1991 | ICASSP | Improvements on the Cramer-Rao bound. | S. Unnikrishna Pillai, Nikhileshwar D. Sinha |
| 1990 | ICASSP | Generalization of maximum entropy spectrum extension method. | S. Unnikrishna Pillai |
| 1988 | ICASSP | An algorithm for optimal placement of sensor elements. | Youngjik Lee, S. Unnikrishna Pillai |
| 1985 | ICASSP | A new approach to array geometry for improved spatial spectrum estimation. | S. Unnikrishna Pillai, Fred Haber, Yeheskel Bar-Ness |