Senior Principal Research Scientist
BAE Systems, Electronic Systems Sector
Burlington MA 01803
Email: thakshila.wewelwala(at)baesystems(dot)com
Google scholar: https://scholar.google.com/citations?user=PrFaG0cAAAAJ&hl=en&oi=ao
LinkedIn: https://www.linkedin.com/in/thakshila-wimalajeewa-631b4914
I received my B.Sc degree (with First Class Honors) in Electronic and Telecommunication Engineering from the University of Moratuwa, Sri Lanka in March 2004 and PhD in Electrical and Computer Engineering from the University of New Mexico, Albuquerque, NM, in December 2009. In January 2010, I joined the Department of Electrical Engineering and Computer Science in Syracuse University, Syracuse, NY as a Post Doctorate Research Associate and then worked as a Research Assistant Professor from 2012 to 2018. Starting August 2018, I have been with BAE Systems, Burlington MA as a Senior Principal Research Scientist.
Statistical Inference with low dimensional signal models
Compressive sensing
Decentralized algorithms for sparse signal processing with multiple measurement vectors
Detection, estimation and tracking
Sensor, cognitive radio and ad hoc networks
Decision making in human-in-the-loop networks
Ph.D., Electrical and Computer Engineering, University of New Mexico, NM, Dec 2009
M. S., Electrical and Computer Engineering, University of New Mexico, NM, May 2008
B.Sc. (First Class Honors), Electronic and Telecommunication Engineering, University of Moratuwa, Sri Lanka, Mar. 2004
Deep Learning Fundamentals with Keras, IBM, Jan 2020
Deep Learning with Python and PyTorch, IBM, Dec 2020
Senior member, IEEE
First runner up: ISIF 2018 Jean-Pierre Le Cadre Best Paper Award, 21st International Conference on Information Fusion, Cambridge, UK, July 2018 (with Pramod K Varshney and Muralidhar Rangaswamy)
Supervised/mentored research: 48th Annual Asilomar Conf. on Signals, Systems and Computers, Pacific Grove, CA Best paper runner-up, Bhavya Kailkhura Nov 2014
First Class Honors (B.Sc. in Engineering), University of Moratuwa, Sri Lanka, March 2004
1. T. Wimalajeewa, and P. K. Varshney, 'Compressed Distributed Detection and Estimation", Book chapter in the IET book 'Data Fusion in Wireless Sensor Network: A Statistical Signal Processing Perspective' edited by Domenico Ciuonzo and Pierluigi Salvo Rossi, May 2019
2. T. Wimalajeewa, S. K. Jayaweera and C. Mosquera, `Multi-Sensor Data Fusion over Noisy Communication Channels', Sensor and Data Fusion, Open access online book, Edited by N. Milisavljevic, I-Tech Education and Publishing, Vienna, Austria. , Feb. 2009.
Baocheng Geng, Swastik Brahma, Thakshila Wimalajeewa, Pramod K. Varshney and Muralidhar Rangaswamy, 'Prospect Theoretic Utility Based Human Decision Making In Multi-agent Systems", IEEE Trans. Signal Process., vol. 68, pp.1091-1104, Jan. 2020
T. Wimalajeewa, and P. K. Varshney 'Compressive Sensing Based Classification in the Presence of Intra- and Inter- Signal Correlation' , IEEE Signal Process. Lett., Volume: 25, Issue: 9, Sept. 2018
S. Kafle, V. Gupta, B. Kailkhura T. Wimalajeewa, and P. K. Varshney `Joint Sparsity Pattern Recovery with 1-bit Compressive Sensing in Distributed Sensor Networks', IEEE Trans. Signal and Information Processing over Networks , to appear 2018
O. Ozdemir, T. Allen, S. Choi, T. Wimalajeewa, and P. K. Varshney `Copula Based Classifier Fusion Under Statistical Dependence', IEEE Transactions on Pattern Analysis and Machine Intelligence, , to appear 2018
T. Wimalajeewa, and P. K. Varshney `Compressive Sensing Based Detection With Multimodal-Dependent Data', IEEE Trans. Signal Process., , vol. 66, no.3, pp. 627 - 640, Feb. 2018
T. Wimalajeewa, P. K. Varshney, and W. Su, `Detection of Single vs Multiple Antenna Transmission Systems Using Pilot Data', IEEE Trans. Signal and Information Processing over Networks , vol.3, no.1, Mar. 2017
T. Wimalajeewa, and P. K. Varshney `Sparse Signal Detection with Compressive Measurements via Partial Support Set Estimation', IEEE Trans. Signal and Information Processing over Networks , vol.3, no.1, Mar. 2017
B. Kailkhura, T. Wimalajeewa, and P. K. Varshney `Collaborative Compressive Detection with Physical Layer Secrecy Constraints', IEEE Trans. Signal Process. , vol. 65, no.4, pp. 1013 - 1025, Feb. 2017
B. Kailkhura, S. Liu, T. Wimalajeewa, and P. K. Varshney `Measurement Matrix Design for Compressed Detection with Secrecy Guarantees', IEEE Wireless Commun. Lett. , vol.5, no.4, pages 420-423, Aug 2016
G. Li, T. Wimalajeewa, and P. K. Varshney , `Decentralized and Collaborative Subspace Pursuit: A Communication-Efficient Algorithm for Joint Sparsity Pattern Recovery', IEEE Trans. Signal Process. , vol. 64, No. 3, pp.556-566, Feb. 2016
Y. Zheng, N. Cao, T. Wimalajeewa and P. K. Varshney `Compressive Sensing based Probabilistic Sensor Management for Target Tracking in Wireless Sensor Networks', IEEE Trans. Signal Process. , vol. 63, no. 22, pp. 6049-6060 , Nov 2015
O. Ozdemir, T. Wimalajeewa, B. Dulek, P. K. Varshney, and W. Su `Asynchronous Linear Modulation Classification With Multiple Sensors via Generalized EM Algorithm', IEEE Trans. Wireless Commun. , vol. 14, no. 11, pp. 6389-6400, Nov 2015
T. Wimalajeewa, Y. C. Eldar, and P. K. Varshney, `Subspace Detection from Structured Union of Subspaces via Linear Sampling', IEEE Trans. Inf. Theory , vol. 61, No.4, pp. 2101-2114, Apr 2015
T. Wimalajeewa, and P. K. Varshney, `Wireless Compressive Sensing Over Fading Channels with Distributed Sparse Random Projections', IEEE Trans. Signal and Information Processing over Networks , vol. 1, no.1, March 2015
Z. Bai, T. Wimalajeewa, Z. Berger, G. Wang, M. Glauser, and P. K. Varshney, A Low Dimensional Approach for Reconstruction of Airfoil Data via Compressive Sensing, AIAA Journal , vol. 53, No. 4, pp. 920-933, doi: 10.2514/1.J053287, Apr 2015
T. Wimalajeewa, and P. K. Varshney, OMP Based Joint Sparsity Pattern Recovery Under Communication Constraints, IEEE Trans. Signal Process. , vol. 62, no. 19, pp. 5059-5072, Oct 2014
T. Wimalajeewa, and P. K. Varshney, Asymptotic Performance of Categorical Decision Making with Random Thresholds, IEEE Signal Process. Lett. , vol. 21, no. 8, pp. 994-997, Aug. 2014
T. Wimalajeewa, and P. K. Varshney, Collaborative Human Decision Making with Random Local Thresholds, IEEE Trans. Signal Process., vol.61, no.11, pages 2975-2989, June 2013
T. Wimalajeewa, H. Chen and P. K. Varshney, Performance Limits of Compressive Sensing-Based Signal Classification, IEEE Trans. Signal Process., vol.60, no.6, pp 2758-2770, June 2012
T. Wimalajeewa and P. K. Varshney, Performance Bounds for Sparsity Pattern Recovery with Quantized Noisy Random Projections, IEEE Journal of Selected Topics in Signal Processing, Special Issue on Robust Measures and Tests Using Sparse Data for Detection and Estimation, vol.6, no.1, pages 43-57, Feb. 2012
T. Wimalajeewa and P. K. Varshney, Polarity-Coincidence-Array Based Spectrum Sensing for Multiple Antenna Cognitive Radios in the Presence of Non-Gaussian Noise, IEEE Transactions on Wireless Communications, Vol. 10, no. 7, pp 2362 - 2371, July 2011.
T. Wimalajeewa and S. K. Jayaweera, Distributed and Collaborative Node Mobility Management for Dynamic Coverage Improvement in Hybrid Sensor Networks, EURASIP Journal on Wireless Communications and Networking ,Article ID 724136, 17 pages, Feb 2011.
T. Wimalajeewa and S. K. Jayaweera, Distributed Node Selection for Sequential Estimation over Noisy Communication Channels IEEE Trans. Wireless Communications Vol. 9, no. 7, pp 2290 - 2301, July 2010
T. Wimalajeewa and S. K. Jayaweera, Impact of mobile node density on detection performance measures in a hybrid sensor network, IEEE Trans. Wireless Communications Vol. 9, no. 5, pp 1760-1769, May 2010
T. Wimalajeewa and S. K. Jayaweera, Distributed Detection of Randomly Located Targets in Mobility-Assisted Sensor Networks with Node Mobility Management EURASIP Journal on Advances in Signal Processing Article ID: 695026, April 2010
T. Wimalajeewa and S. K. Jayaweera, Optimal Power Scheduling for Correlated Data Fusion in Wireless Sensor Networks Via Constrained PSO IEEE Trans. Wireless Communications vol. 7, no. 9, pp 3608-3618, Sep. 2008
Swatantra Kafle, Thakshila Wimalajeewa and Pramod K. Varshney, 'Noisy 1-bit Compressed Sensing with Heterogeneous Side-Information", International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Brighton, United Kingdom, May 2019
S. Kafle, T. Wimalajeewa, and P. K. Varshney, 'Generalized Approximate Message Passing for Noisy 1-bit Compressed Sensing with Side-Information ", 52nd Asilomar Conference on Signals, Systems and Computers , Pacific Grove, California, Oct 2018
T. Wimalajeewa, ,P. K. Varshney, and Muralidhar Rangaswamy 'On Integrating Human Decisions with Physical Sensors for Binary Decision Making ", 21st International Conference on Information Fusion , Cambridge, UK, July 2018 (First runner up: ISIF 2018 Jean-Pierre Le Cadre Best Paper Award)
S. Kafle, T. Wimalajeewa, and P. K. Varshney, 'Decentralized Joint Sparsity Pattern Recovery Using 1-bit Compressive Sensing ", IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) , Calgary, Alberta, Canada, April 2018
T. Wimalajeewa, and P. K. Varshney, 'Robust Detection of Random Events with Spatially Correlated Data in Wireless Sensor Networks via Distributed Compressive Sensing ", IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP) , Curacao, Dutch Antilles, December 2017
O. Ozdemir, L. N. Theagarajan, M. Agarwal, T. Wimalajeewa, and P. K. Varshney, 'An MCMC Approach to Multisensor Linear Modulation Classification ",IEEE Wireless Communications and Networking Conference (WCNC) , San Francisco, CA, March 2017
T. Wimalajeewa, and P. K. Varshney, 'Detection with Multimodal Dependent Data Using Low Dimensional Random Projections ", 42nd International Conference on Acoustics, Speech, and Signal Processing (ICASSP) , New Orleans, LA, March 2017
S. Kafle, B. Kailkhura, T. Wimalajeewa, and P. K. Varshney, 'Decentralized Joint Sparsity Pattern Recovery Using 1-bit Compressive Sensing ", IEEE Global Conference on Signal and Information Processing (GlobalSip) , Washington, DC, 2016
V. Gupta, B. Kailkhura, T. Wimalajeewa, S. Liu and P. K. Varshney, 'Joint Sparsity Pattern Recovery with 1-bit Compressive Sensing in Distributed Sensor Networks ", 49th Annual Asilomar Conf. on Signals, Systems and Computers , Pacific Grove, CA, Nov 2015
T. Wimalajeewa, J. Jagannath, P. K. Varshney, A. Drozd and W. Su, 'Distributed Asynchronous Modulation Classification Based on Hybrid Maximum Likelihood Approach ", Military Communications Conference (MILCOM) , Tampa, FL, Oct 2015
T. Wimalajeewa and P. K. Varshney, 'Asymptotic Performance of Categorical Decision Making with Random Thresholds ", 40th International Conference on Acoustics, Speech, and Signal Processing (ICASSP'15) , Brisbane, Australia, April, 2015 (SP letter presentation)
G. Li, H. Zhang, T. Wimalajeewa and P. K. Varshney, 'On the Detection of Sparse Signals with Sensor Networks based on Subspace Pursuit' ", 2nd IEEE Global Conference on Signal and Information Processing (GlobalSip) , Atlanta, GA, Dec 2014
B. Kailkhura, T. Wimalajeewa and P. K. Varshney, 'On Physical Layer Secrecy of Collaborative compressive Detection ", 48th Annual Asilomar Conf. on Signals, Systems and Computers , Pacific Grove, CA, Nov 2014
S. Foulke, J. Jagannath, A. Drozd, T. Wimalajeewa , P. K. Varshney and W. Su, 'Multisensor Modulation Classification (MMC) implementation considerations - USRP case study' ", Military Communications Conference (MILCOM) , Baltimore, MD, Oct 2014
B. Kailkhura, T. Wimalajeewa, L. Shen and P. K. Varshney, 'Distributed Compressive Detection with Perfect Secrecy' ", 2nd Int. Workshop on Compressive Sensing in Cyber-Physical Systems (CSCPS'14) , Philadelphia, PA, Oct 2014
G. Li, T. Wimalajeewa and P. K. Varshney, 'Decentralized subspace pursuit for joint sparsity pattern recovery ", 39th International Conference on Acoustics, Speech, and Signal Processing (ICASSP'14) , Florence, Italy, May 2014
Y. Zheng, T. Wimalajeewa and P. K. Varshney, 'Probabilistic sensor management for target tracking via compressive sensing ", 39th International Conference on Acoustics, Speech, and Signal Processing (ICASSP'14) , Florence, Italy, May 2014
T. Wimalajeewa and P. K. Varshney, 'Cooperative Sparsity Pattern Recovery in Distributed Networks Via Distributed-OMP ", 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP'13) , Vancouver, Canada, May, 2013
M. Glauser, P. K. Varshney, T. Wimalajeewa, Z. Bai, Z. Berger, and G. Wang, 'Application of Compressive Sensing to NACA 4412 PIV Data ", AIAA ASM Conference , Dallas, Texas, Jan, 2013 (invited)
Z. Bai, T. Wimalajeewa, Z. Berger, M. Glauser, P. K. Varshney, and D. Leskiw, `Physics Based Compressive Sensing Approach Applied to Airfoil Data Collection and Analysis ", 65th Annual Meeting of the APS Division of Fluid Dynamics , San Diego, CA, Nov, 2012
T. Wimalajeewa and P. K. Varshney `Collaborative Human Decision Making with Imperfect Knowledge of Individual Thresholds ", 15th Int. Conf. on Information fusion , Singapore, July, 2012
T. Wimalajeewa and P. K. Varshney `A Non-parametric Approach for Spectrum Sensing with Multiple Antenna Cognitive Radios in the Presence of Non-Gaussian Noise ", IEEE Wireless Communications and Networking Conference (WCNC), Cancun, Mexico, March 2011.
T. Wimalajeewa and H. Chen and P. K. Varshney, `Performance Analysis of Stochastic Signal Detection with Compressive Measurements', 44th Annual Asilomar Conf. on Signals, Systems and Computers ,Pacific Grove, CA, Nov 2010.
T. Wimalajeewa and S. K. Jayaweera, `A Novel Distributed Mobility Protocol for Dynamic Coverage in Sensor Networks', IEEE Global Communications Conference (GLOBECOM 2010) Miami, FL, Dec. 2010.
T. Wimalajeewa and S. K. Jayaweera, `Mobility Assisted Distributed Tracking in Hybrid Sensor Networks', 29th IEEE Int. Conf. on Communications (ICC)Cape Town, South Africa, May 2010
T. Wimalajeewa and S. K. Jayaweera, `Trade-off Between Mobile Node Density and Detection Performance in Hybrid Sensor Networks with Random Node Mobility', 5th International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP) Melbourne, Australia, Dec. 2009
T. Wimalajeewa and S. K. Jayaweera, `Sequential Estimation Over Noisy Channels with Distributed Node Selection', Military Communications Conference (MILCOM) Boston, MA, Oct. 2009
S. K. Jayaweera and T. Wimalajeewa, `Optimal Sensor Placement for Distributed Detection of a Randomly-Located Target in the Presence of Fading', Military Communications Conference (MILCOM) San Diego, CA, Nov. 2008
T. Wimalajeewa and S. K. Jayaweera, `Power Efficient Distributed Estimation in a Bandlimited Wireless Sensor Network', 41st Annual Asilomar Conf. on Signals, Systems and Computers Pacific Grove, CA, Nov. 2007
T. Wimalajeewa and S. K. Jayaweera, `PSO for Constrained Optimization: Optimal Power Scheduling for Correlated Data Fusion in Wireless Sensor Networks', 18th IEEE International symposium on Personal, Indoor, Mobile and Radio Communications (PIMRC'07) Athens, Greece, Sep. 2007
T. Wimalajeewa and S. K. Jayaweera, `Power Scheduling for Correlated Data Fusion in Wireless Sensor Networks', 66th IEEE Vehicular Technology Conference (VTC'07 - Fall) Baltimore, MD, USA, Oct. 2007
T. Wimalajeewa and S. K. Jayaweera, `Optimal Power Scheduling for Decision Fusion in Inhomogeneous Wireless Sensor Networks', IEEE International Conference on Advanced Video and Signal-based Surveillance (AVSS) Sydney, Australia, Nov. 2006
T. Wimalajeewa and P. K. Varshney, `Polarity-Coincidence-Array Based Spectrum Sensing for Multiple Antenna Cognitive Radios in the Presence of Non-Gaussian Noise', Dept. of Electrical Engineering and Computer Science, Syracuse University No: SYR-EECS-2011-01, Jan. 2011
T. Wimalajeewa S. Brennan and A. Galbraith, `Vehicle Classification from Seismic Data using Discrete Wavelet Transform', Los Alamos National LaboratoryRelease No: LA-UR-08-06389, 2008
- IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 2018
- IEEE ComSoc Signal Processing for Communications and Electronics Technical Committee
- IEEE Global Communications conference (Globecom), 2015, 2018, 2019
- IEEE International Conference on Communications (ICC), 2015, 2018, 2019, 2020
- IEEE Wireless Communications and Networking Conference (WCNC), 2020, 2019, 2016, 2015, 2014, 2013
- Third International Symposium on Signal Processing and Intelligent Recognition Systems (SIRS’17), 2017, 2019
- 11th IEEE International Conference on Mobile Ad hoc and Sensor Systems, Session: ’Algorithms and Theory’, Oct 2014, Philadelphia, PA
- IEEE Transactions on Signal Processing
- IEEE Transactions on Information Theory
- IEEE Transactions on Wireless Communications
- IEEE Transactions on Communications
- IEEE Transactions on Computers
- IEEE Journal on Selected Areas in Communications - Cognitive Radio Series
- IEEE Transactions on Vehicular Technology
- IEEE Communication Letters
- IEEE Signal Processing Letters
- IEEE Wireless Communication Letters
- Signal Processing
- Applied Mathematics and Computation
- several conferences (ICC, WCNC, MILCOM, VTC)