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P. Sumathi
P. Sumathi Associate Professor psumifee[at] 01332-285259
Areas of Interest
  • Control and signal processing, phase locking schemes, sliding DFT filters, multi-component decomposition
  • Parameter esitmation, on-line estimation of sinusoidal and exponentially decaying sinusoidal signal parameters
  • Instrumentation, vibration measurement, capacitance measurement,ultrasonics
Professional Background
2015On GoingAssociate ProfessorDepartment of Electrical Engineering, Indian Institute of Technology Roorkee
20112015Assistant ProfessorDepartment of Electrical Engineering, Indian Institute of Technology Roorkee
20092011Assistant ProfessorDepartment of Information and Communication Technology, DAIICT, Gujarat
Educational Details
Ph.D.Electrical EngineeringIndian Institute of Technology Madras, Chennai2009
M.E.Control and InstrumentationCollege of Engineering Guindy, Anna University, Chennai2002
B.E.Electrical and Electronics EngineeringS.R.M. Engineering College, Chennai1996
Sponsored Research Projects
TopicFunding AgencyYear
Active Vibration Control of Single-Link Flexible manipulator DST2012
Field Deployable Signal Processing System for Measurement of Path Integrated Gas Concentration DRDO2015
  • Senior Member, IEEE
Teaching Engagements
TitleCourse CodeClass NameSemester
Virtual InstrumentationEEN-625M.Tech and B.TechSpring
Digital Signal and Image ProcessingEEN-521M.TechAutumn
Advanced Digital System DesignEEN-682M.Tech and B.TechAutumn
PHDs Supervised
TopicScholar NameStatus of PHDRegistration Year
Time-frequency Analysis of Seismic SignalsRoshan KumarA2011
Vibration Parameter Estimation Technique for Ultrasonic Measurement SystemsKsh. Milan SinghA2013
Semi-active Vibration Control of Structures with Magnetorheological DamperSoju J. AlexanderO2014
Capacitance to Frequency Conversion with Recursive Discrete Fourier Transform EstimatorTushar TyagiO2015
Refereed Journal Papers
  1. Tushar Tyagi and P. Sumathi, "Frequency Estimation based on Moving-Window DFT with Fractional Bin-Index for Capacitance Measurement," IEEE Transactions on Instrumentation and Measurement (Accepted).
  2. Shikha Tomar and P. Sumathi, "Amplitude and Frequency Estimation of Exponentially Decaying Sinusoids," IEEE Transactions on Instrumentation and Measurement, vol. 67, no. 1, pp. 229 - 237, Jan. 2018.
  3. Roshan Kumar, P. Sumathi, and Ashok Kumar, "Synchrosqueezing Transform-Based Frequency Shifting Detection for Earthquake-Damaged Structures," IEEE Geoscience and Remote Sensing Letters, vol. 14, no. 8, pp. 1393 - 1397, Aug. 2017.
  4. Udaya Joshi and P. Sumathi, "Sliding Discrete Fourier Transform Based Frequency-Locked Loop for Adaptive Carrier Tracking of Bi-Phase Signals," IET Communications, vol. 10, no.18, pp. 2649 - 2655, Dec. 2016.
  5. Ksh. Milan Singh and P. Sumathi,  "Moving-Window DFT based Frequency-Locked Loop for FM demodulation," IEEE Communications Letters, vol. 20, no. 5, pp. 898-901, May 2016.
  6. Jinti Hazarika and P. Sumathi, "Moving Window Filter Based Frequency-Locked Loop for Capacitance Measurement," IEEE Transactions on Industrial Electronics, vol. 62, no. 12, pp. 7821-7823, Dec. 2015.
  7. Ksh. Milan Singh and P. Sumathi, "Synchronization Technique for Doppler Signal Extraction in Ultrasonic Vibration Measurement Systems," IEEE Transactions on Instrumentation and Measurement, vol. 64, no. 12, pp. 3162-3172, Dec. 2015.
  8. P. Sumathi and Ksh. Milan Singh, "Sliding discrete Fourier transform-based mono-component amplitude modulation-frequency modulation signal decomposition," IET Communications, vol. 9, no. 9, pp. 1221 - 1229, June 2015.
  9. Chandrashekhar Shitole and P. Sumathi, "Sliding DFT-Based Vibration Mode Estimator for Single-Link Flexible Manipulator," IEEE/ASME Transactions on Mechatronics, vol. 20, no. 6, pp. 3249-3256, Dec. 2015.
  10. Ksh. Milan Singh and P. Sumathi, "Vibration Parameter Estimation Methods for Ultrasonic Measurement Systems- A Review," IET Science, Measurement and Technology, vol. 9, no. 4, pp. 492 - 504, July 2015.
  11. Sarita Mishra, Debasmit Das, Roshan Kumar, and P. Sumathi, "A Power-Line Interference Canceler Based on Sliding DFT Phase Locking Scheme for ECG Signals," IEEE Transactions on Instrumentation and Measurement, vol. 64, no. 1, pp.132 - 142, Jan. 2015. 
  12. P. Sumathi, “A Frequency Demodulation Technique based on Sliding DFT Phase Locking Scheme for Large Variation FM Signals,” IEEE Communications Letters, vol. 16, no.11, pp. 1864 - 1867, Nov. 2012.
  13. P. Sumathi, P. A. Janakiraman, “Phase locking scheme based on look-up-table-assisted sliding discrete Fourier transform for low-frequency power and acoustic signals,” IET Circuits, Devices and Systems, vol. 5, Issue 6, pp. 494 - 504, Dec. 2011.
  14. P. Sumathi, P. A. Janakiraman, “FPGA Implementation of an Amplitude Modulated Continuous Wave Ultrasonic Ranger using Restructured Phase Locking Scheme,” Journal of VLSI Design, Article ID 213043, 2010.
  15. P. Sumathi, P. A. Janakiraman, “SDFT based Ultrasonic Range Finder using AM Continuous Wave and Online Parameter Estimation,” IEEE Transactions on Instrumentation and Measurement, vol. 59, no. 8, pp.1994 - 2004, Aug. 2010.
  16. P. Sumathi, P. A. Janakiraman, “Integrated Phase-Locking Scheme for SDFT-Based Harmonic Analysis of Periodic Signals,” IEEE Transactions on Circuits and Systems-II: Express Briefs, vol. 55, no.1, pp. 51 - 55, Jan. 2008.