Prof. Vaidyanathan's pioneering contributions include the development of the theory and structures for filter banks,[1] especially perfect reconstruction and orthonormal filter banks, which find applications in data compression standards such as JPEG and MPEG, and in digital communications. One of his early contributions is the development of the theory of robust digital filter structures directly in discrete time without recourse to classical circuit theoretical models.[2] He has also contributed widely in other areas of signal processing including image processing,[3] genomic signal processing,[4] sampling theory,[5] optimal transceivers,[6] radar signal processing,[7] and sensor array processing.[8] He has also explored the role of number theory in signal processing applications.[9]
Awards and honors
IEEE Jack S. Kilby Signal Processing Medal, 2024 [10]
Fellow of the Indian National Academy of Engineering, 2021 [11]
R. D. Koilpillai, and P. P. Vaidyanathan, "Cosine-modulated FIR filter banks satisfying perfect reconstruction," IEEE Transactions on Signal Processing, vol. 40, pp. 770-783, April 1992. https://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=127951
S-M. Phoong, C. W. Kim, P. P. Vaidyanathan, and R. Ansari, "A new class of two-channel biorthogonal filter banks and wavelet bases," IEEE Trans. Signal Proc., vol. SP-43, pp. 649--665, March 1995. https://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=370620
P. P. Vaidyanathan, "Theory and design of M-channel maximally decimated quadrature mirror filters with arbitrary $M,$ having perfect reconstruction property," IEEE Trans. on Acoustics, Speech and Signal Processing, vol. 35, pp. 476-492, April 1987. https://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1165155
P. P. Vaidyanathan, S. K. Mitra and Y. Neuvo, "A new approach to the realization of low sensitivity IIR digital filters," IEEE Trans. on Acoustics, Speech and Signal Processing, vol. ASSP-34, pp. 350-361, April 1986. https://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1164829
P. P. Vaidyanathan and T. Q. Nguyen, "Eigenfilters: a new approach to least squares FIR filter design and applications including Nyquist filters," IEEE Trans. on Circuits and Systems, vol. 34, pp. 11-23, January 1987. https://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1086033
Ching-Chih Weng, Chun-Yang Chen, and P. P. Vaidyanathan, "MIMO transceivers with decision feedback and bit loading: theory and optimization", IEEE Transactions on Signal Processing, March 2010. https://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5272297
Chih-Hao Liu and P. P. Vaidyanathan, "MMSE DFE Transceiver Design over Slowly Time-varying MIMO Channels Using ST-GTD", IEEE Transactions on Signal Processing, vol. 59, pp. 277--289, Jan. 2011. https://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5601795
Chun-Yang Chen and P. P. Vaidyanathan, "MIMO Radar Waveform Optimization with Prior Information of the Extended Target and Clutter", IEEE Transactions on Signal Processing, vol. 57, no. 9, pp. 3533-3544, Sept. 2009. https://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4840496
Piya Pal and P. P. Vaidyanathan, "Nested arrays: a novel approach to array processing with enhanced degrees of freedom," IEEE Transactions on Signal Processing, vol. 58, pp. 4167--4181, August 2010. https://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5456168
S. V. Tenneti and P. P. Vaidyanathan, "Nested Periodic Matrices and Dictionaries: New Signal Representations for Period Estimation," IEEE Trans. on Signal Proc., vol. 63, no. 14, pp. 3736--3750, July 2015. https://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7109930&tag=1