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Scott Thurston Rickard

Associate Professor

School Of Electric, Electron & Comms Eng
Belfield Office Park - 8
Belfield
Dublin 4

Tel: +353 1 7165324
Email: scott.rickard@ucd.ie

Biography

o Mathematics (S.B.) - M.I.T. (1992)
o Computer Science and Engineering (S.B.) - M.I.T. (1993)
o Electrical Engineering and Computer Science (S.M.) - M.I.T. (1993)
o Applied and Computational Mathematics (M.A.) - Princeton (2000)
o Applied and Computational Mathematics (Ph.D.) - Princeton (2003)
Research Interests:
o time-frequency/scale analysis applied to signal processing
o blind source localization and separation
o computational and mathematical finance
o time-varying channel models
o frequency-hopping and Costas arrays

Extended Bio:
Scott Rickard was born in New York in 1970. He received the S.B. degree in Mathematics in 1992, the S.B. degree in Computer Science and Engineering in 1993, and the S.M. degree in Electrical Engineering and Computer Science also in 1993, all from the Massachusetts Institute of Technology (M.I.T.). He received the M.A. and Ph.D. degrees in Applied and Computational Mathematics from Princeton University in 2000 and 2003 respectively.

From 1991 to 1993 he was a research assistant at the Charles Stark Draper Laboratory in Cambridge, Massachusetts and worked on a prototype analog neural network computer, designed neural networks for mine detection from sonar images, and designed large sets of frequency hopped waveforms with nearly ideal ambiguity properties for sonar applications. From 1993 to 2003 he was a member of technical staff at Siemens Corporate Research in Princeton, New Jersey. He spent 1995 and 1996 in Munich Germany with Siemens working in the Neural Networks Group. While with Siemens, he developed and applied machine learning technology to industrial problems such as vehicle navigation, automated image analysis, biomedical signal classification, and industrial plant state prediction.

Professor Rickard moved to UCD in September 2003 and is currently an Associate Professor in the School of Electrical, Electronic and Mechanical Engineering and the founding Director of the UCD Complex & Adaptive Systems Laboratory (CASL). Since joining UCD, Professor Rickard has obtained over 1.4M euro in individual funding including:

  • SFI's Research Frontiers Programme Award (2009-2011)
  • SFI's President of Ireland Young Researcher Award (2005-2010)
  • Enterprise Ireland's Proof-of-Concept Award (2004-2005 & 2010-2011)

as well as over 120M euro in group funding including:

  • HEA PRTLI5 Award for the UCD Science Centre (2011)
  • HEA PRTLI5 PhD Programme in Simulation Science (2011)
  • SFI Stokes Professorship and Lectureship Programme (2007-2013)
  • SFI Mathematics initiative for the creation of the Claude Shannon Institute (2006-2011)
  • LIBERTY Consortium for the creation of the National Digital Research Centre (NDRC) (2005-2011)

Professional

 

Associations

Association: Institute of Electrical and Electronics Engineers (IEEE), Function/Role: Senior Member
Association: MIT Club of Ireland, Function/Role: President 2006-present; Membership Chair 2004-2006.
Association: Science and Technology Committee of the Royal Dublin Society (RDS) , Function/Role: Member
Association: American Mathematical Society (AMS), Function/Role: Member
Association: Tau Beta Pi (Engineering Honor Society), Function/Role: Member
Association: Society for Industrial and Applied Mathematics (SIAM), Function/Role: Member
Association: European Association for Signal, Speech and Image Processing (EURASIP), Function/Role: Member
Association: Mathematical Association of America (MAA), Function/Role: Member

Patents

Patent 6262760 : Omnidirectional Visual Image Detector and Processor
Patent 6954494 : Online Blind Source Separation
Patent 6901363 : Method of Denoising Signal Mixtures
Patent 6526148 : Device and Method for Demixing Signal Mixtures Using Fast Blind Source Separation Technique Based on Delay and Attenuation Compensation, and for Selec
Patent 6430528 : Method and Apparatus for Demixing Degenerate Mixtures
Patent 5961571 : Method and Apparatus for Automatically Tracking the Location of Vehicles
Patent 5920337 : Omnidirectional Visual Image Detector and Processor
Patent 5642106 : Visual Incremental Turn Detector
Patent Irish Patent Ap : A method and apparatus for blind source separation
Patent Patent Pending : System and Method for Non-Square Blind Source Separation Under Coherent Noise by Beamforming and Time-Frequency Masking
   

Conference Contributions

IMA; (2008) Mathematics in Signal Processing. [Conference Organising Committee Member], 8th International Conference on Mathematics in Signal Processing, Cirencester, UK , 16-DEC-08 - 18-DEC-08.
S. Rickard; WASPAA07. [Conference Organising Committee Member], 2007 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, New York, USA .
S. Rickard; ISSC06. [Conference Organising Committee Member], 2006 Irish Signals and Systems Conference, Dublin, Ireland .

Committees

Committee : 2007-present UCD Research IT Steering Group
Committee : 2007 UCD Seed Funding Committee
Committee : 2005 Marine Technology Forsight Panel, National Marine Research & Innovation Strategy Initiative, Marine Institute.
Committee : 2005 Enterprise Ireland Proof-of-Concept Review Panel
Committee : 2004-2007: School Committee on Teaching and Learning
Committee : 2004 Science Foundation Ireland Basic Research Grant Review Panel

Employment

Employer: University College Dublin
Position: Senior Lecturer
Employer: University College Dublin
Position: Lecturer
Employer: Siemens Corporate Research, Princeton, NJ
Position: Member of Technical Staff
Employer: Siemens Central Research and Development, Munich, Germany
Position: Member of Technical Staff
Employer: Siemens Corporate Research, Princeton, NJ
Position: Member of Technical Staff
Employer: Siemens Corporate Research, Princeton, NJ
Position: Associate Member of Technical Staff
Employer: Charles Stark Draper Laboratory
Position: Research Assistant
Employer: Computer Science Corporation, Laurel, MD
Position: Software Engineer
Employer: Plasma Fusion Laboratory, M.I.T.
Position: UROP Student
Employer: National Institutes of Health, Silver Spring, MD
Position: Summer Intern

Education

Year 2003 Institution:
Qualification: PhD Subject:
Year 2000 Institution: Princeton University
Qualification: MA Subject: Applied and Computational Mathematics
Year 1993 Institution: Massachusetts Inst of Tech
Qualification: MSc Subject:
Year 1993 Institution: Massachusetts Institute of Technology
Qualification: BSc Subject: Computer Science and Engineering
Year 1992 Institution: Massachusetts Inst of Tech
Qualification: BSc Subject:
   

Outreach Activities

Morning Session Chair: Sudden Cardiac Death Information Day, Irish Heart Foundation, May 2006.
   

Publications

 

Book Chapters

S. Rickard; (2007) 'The DUET Blind Source Separation Algorithm' In: Shoji Makino, Te-Won Lee, Hiroshi Sawada (eds). Blind Speech Separation. Berlin: Springer-Verlag. [Details]
 

Peer Reviewed Journals

K. Taylor, S. Rickard, K. Drakakis; (2010) 'Costas Arrays: Survey, Standardization and MATLAB Toolbox'. ACM Transactions on Mathematical Software, . [Details]
K. Drakakis, R. Gow, S. Rickard; (2010) 'On the disjointness of algebraically constructed arrays'. Journal of Algebra and Its Applications, . [Details]
S. Rickard, K. Drakakis, N. Tsakalozos; (2010) 'Channel models of the Doppler effect'. Advanced Studies in Theoretical Physics, 4 (2):67-90. [Details]
K. Drakakis, S. Rickard; (2010) 'On the construction of nearly optimal Golomb rulers by unwrapping Costas arrays'. Contemporary Engineering Sciences, 3 (7):295-309. [Details]
K. Drakakis, A. Moni, S. Rickard, K. Taylor; (2010) 'A receiver/transmitter localization algorithm on the plane'. Contemporary Engineering Sciences, . [Details]
Barker, L,Drakakis, K,Rickard, S; (2009) 'On the Complexity of the Verification of the Costas Property'. Proceedings of the IEEE, 97 :586-593. [DOI] [Details]
N. Hurley, S. Rickard; (2009) 'Comparing Measures of Sparsity'. IEEE Transactions on Information Theory, 55 (10):4723-4741. [Details]
Melia, T,Rickard, S; (2007) 'Underdetermined blind source separation in echoic environments using DESPRIT'. EURASIP Journal on Advances in Signal Processing, 2007 :Article ID 86484-19 pages. Available Online [DOI] [Details]
Gow, R., Drakakis, K., Rickard, S.; (2007) 'Parity properties of Costas arrays defined via finite fields'. Advances in Mathematics of Communications, 1 :321-330. [Details]
K. Drakakis, R. Gow, S. Rickard; (2009) 'Common distance vectors between Costas arrays'. Advances in Mathematics of Communications, 3 (1):35-52. [Details]
Drakakis, K,Gow, R,Rickard, S; (2008) 'Interlaced Costas Arrays Do Not Exist'. Mathematical Problems in Engineering, 2008 (Article ID 456034). [DOI] [Details]
Took, C. C., Sanei, S., Rickard, S., Chambers, J., Dunne, S., ; (2008) 'Fractional delay estimation for blind source separation and localization of temporomandibular joint sounds'. IEEE Transactions on Biomedical Engineering, 55 (3):949-956. [Details]
K. Drakakis, R. Gow, J. Healy, S. Rickard ; (2008) 'Cross-correlation properties of Costas arrays and their images under horizontal and vertical flips'. Mathematical Problems in Engineering, . [Details]
K. Drakakis, J. Healy, S.Rickard; (2008) 'A stochastic analysis approach in the search for Costas arrays'. International Journal of Applied Mathematics and Engineering Sciences, 2 (1):93-108. [Details]
K. Drakakis, S. Rickard, J. Beard, R. Caballero, F. Iorio, G. O'Brien, J. Walsh; (2008) 'Results of the enumeration of Costas arrays of order 27'. IEEE Transactions on Information Theory, 54 (10):4684-4687. [Details]
Drakakis, K., Rickard, S., ; (2008) 'On the generalization of the Costas property in the continuum'. Advances in Mathematics of Communications, 2 (2):113-130. [Details]
Clive Cheong Took, Saeid Sanei', Scott Rickard, Jonathon Chambers and Stephen Dunne; (2008) 'Fractional Delay Estimation for Blind Source Separation and Localization of Temporomandibular Joint Sounds'. IEEE Transactions in Biomedical Engineering, 55 (3):949-956. [Details]
K. Drakakis, S. Rickard, R. de Frein, A. Cichocki; (2008) 'Analysis of Financial Data using Non-Negative Matrix Factorization'. International Mathematical Forum, 3 (38):1853-1870. [Details]
S. Rickard, R. Balan, V. Poor, S. Verdu; (2005) 'Canonical Time-Frequency, Time-Scale, and Frequency-Scale Representations of Time-Varying Channels'. Journal on Communications in Information and Systems, 5 (2):197-226. Available Online [Details]
R. Balan, J. Rosca, S. Rickard; (2005) 'Equivalence Principle for Optimization of Sparse versus Low-Spread Representations for Signal Estimation in Noise'. International Journal of Imaging Systems and Technology, 15 (1):10-17. Available Online [Details]
P. O'Grady, B. Pearlmutter, S. Rickard; (2005) 'Survey of sparse and non-sparse methods in source separation'. International Journal of Imaging Systems and Technology, 15 (1):18-33. Available Online [Details]
O. Yilmaz, S. Rickard; (2004) 'Blind separation of speech mixtures via time-frequency masking'. IEEE Transactions on Signal Processing, 52 (7):1830-1847. Available Online [Details]
S. Rickard; (2000) 'A new approach to direction of arrival estimation'. RF Design, 23 (5):54-62. [Details]
S. Rickard, J. Fricke; (1993) 'Large sets of frequency hopped codes with nearly ideal orthogonality properties'. Journal of the Acoustical Society of America, 94 :1867-1867. [Details]
 

Conference Publications

K. Drakakis, S. Rickard; (2010) Cross-correlation of Costas arrays: the current status Proceedings of the 19th International Symposium on Mathematical Theory of Networks and Systems, Budapest, Hungary [Details]
A. Moni, K. Drakakis, S. Rickard, K. Taylor; (2010) A new algorithm for receiver/transmitter localization on the plane Proceedings of the 44th Annual Conference on Information Sciences and Systems Princeton, NJ, USA, [Details]
R. de Frein, S. Rickard, B. Pearlmutter; (2009) Constructing Time-Frequency Dictionaries for Source Separation via Time-Frequency Masking and Source Localisation International Symposium on Independent Component Analysis and Blind Source Separation Paraty, Brazil, [Details]
P. O¿Grady, S. Rickard; (2009) Recovery of Non-negative Signals form Compressively Sampled Observations Via Non-negative Quadratic Programming Workshop on Signal Processing with Adaptive Sparse Structured Representations Saint-Malo, France, [Details]
P. O¿Grady, S. Rickard; (2009) Automatic Hexaphonic Guitar Transcription Using Non-Negative Constraints IET Irish Signals and Systems Conference Dublin, Ireland, [Details]
N. Tsakalozos, S. Rickard, K. Drakakis; (2009) Some remarks on the well-posedness of the EMD algorithm IET Irish Signals and Systems Conference Dublin, Ireland, [Details]
R. de Frein, S. Rickard; (2009) Learning speech features in the presence of noise: Sparse convolutive robust non-negative matrix factorization 16th International Conference on Digital Signal Processing Santorini, Greece, [Details]
K. Taylor, S. Rickard, K. Drakakis; (2009) On Costas arrays with various types of symmetry 16th International Conference on Digital Signal Processing Santorini, Greece, [Details]
R. de Frein, S. Rickard, K. Drakakis; (2009) Extracting GARCH E ects from Asset Returns using Robust NMF IEEE Digital Signal Processing Workshop Marco Island, Florida, USA, [Details]
A. Moni, S. Rickard; (2009) Comparison of Localization Algorithms using Attenuation Estimates IEEE Digital Signal Processing Workshop Marco Island, Florida, USA, [Details]
K. Drakakis, S. Rickard; (2008) Distance vectors in Costas arrays Proceedings of the 42nd Annual Conference on Information Sciences and Systems Princeton, NJ, USA, [Details]
K. Drakakis, S. Rickard; (2008) Costas permutations in the continuum Proceedings of the 42nd Annual Conference on Information Sciences and Systems Princeton, NJ, USA, [Details]
P. O'Grady and S. Rickard; (2008) Non-negative Matrix Factorisation of Compressively-Sampled Non-Negative Signals IMA International Conference on Mathematics in Signal Processing The Royal Agricultural College, Cirencester, UK, [Details]
R. de Frein, S. Rickard; (2008) Sparse Multi-channel Echoic Source Separation IMA International Conference on Mathematics in Signal Processing The Royal Agricultural College, Cirencester, UK, [Details]
A. Moni, S. Rickard; (2008) Comparison of Localization Algorithms using Time Delay of Arrival Estimates IMA International Conference on Mathematics in Signal Processing The Royal Agricultural College, Cirencester, UK, [Details]
P. O'Grady and S. Rickard; (2008) Compressive Sampling Of Non-Negative Signals IEEE International Workshop on Machine Learning for Signal Processing Cancun, Mexico, [Details]
N. Hurley and S. Rickard; (2008) Comparing Measures Of Sparsity IEEE International Workshop on Machine Learning for Signal Processing Cancun, Mexico, [Details]
P. O'Grady, S. Rickard; (2008) Automatic ASCII Art Conversion of Binary Images Using Non-negative Constraints IET Irish Signals and Systems Conference Galway, Ireland, [Details]
K. Drakakis, S. Rickard, R. Caballero, F. Iorio, G. O'Brien, J. Walsh; (2008) The enumeration of Costas arrays of order 27 IET Irish Signals and Systems Conference Galway, Ireland, [Details]
R. de Frein, K. Drakakis, S. Rickard; (2008) Portfolio diversification using subspace factorizations Proceedings of the 42nd Annual Conference on Information Sciences and Systems Princeton, NJ, USA, [Details]
S. Rickard, A. Cichocki; (2008) When is non-negative matrix decomposition unique? Proceedings of the 42nd Annual Conference on Information Sciences and Systems Princeton, NJ, USA, [Details]
J. Devlin, S. Rickard; (2008) Accelerated Costas Array enumeration using FPGAs Proceedings of the 42nd Annual Conference on Information Sciences and Systems Princeton, NJ, USA, [Details]
N. Hurley, S. Rickard, P. Curran, K. Drakakis; (2007) Maximizing Sparsity of Wavelet Representations via Parameterized Lifting IEEE 15th International Conference on Digital Signal Processing Cardif, Wales, , 01-JUL-07 - 01-JUL-07 [Details]
S. Rickard; (2006) Open Problems in Costas Arrays IMA Seventh International Conference on Mathematics in Signal Processing Cirencester, UK, , 01-DEC-06 - 01-DEC-06 [Details]
S. Rickard, K. Drakakis, N. Tsakalozos; (2006) On the efficiency of time-varying channel models 40th Annual Conference on Information Sciences and Systems Princeton, NJ, USA, , 01-MAR-06 - 01-MAR-06 [Details]
K. Drakakis, R. Gow, S. Rickard; (2006) On the parity populations of Welch-constructed Costas arrays 40th Annual Conference on Information Sciences and Systems Princeton, NJ, USA, , 01-MAR-06 - 01-MAR-06 [Details]
S. Rickard, E. Connell, F. Duignan, A. Wade; (2006) The enumeration of Costas Arrays of size 26 40th Annual Conference on Information Sciences and Systems Princeton, NJ, USA, , 01-MAR-06 - 01-MAR-06 [Details]
S. Rickard, J. Healy; (2006) Stochastic Search for Costas Arrays 40th Annual Conference on Information Sciences and Systems Princeton, NJ, USA, , 01-MAR-06 - 01-MAR-06 [Details]
T. Melia, A. Moni, S. Rickard; (2006) Maximum Likelihood Estimation in Sparse Systems and the Power Weighted Histogram Estimation Tool IMA Seventh International Conference on Mathematics in Signal Processing Cirencester, UK, , 01-DEC-06 - 01-DEC-06 [Details]
S. Rickard, K. Drakakis, N. Tsakalozos; (2006) A comparison of the classic and relativistic Doppler effect in linear time-variant channel models IMA Seventh International Conference on Mathematics in Signal Processing Cirencester, UK, , 01-DEC-06 - 01-DEC-06 [Details]
S. Rickard; (2006) Sparse sources are separated sources 16th European Signal Processing Conference Florence, Italy, , 01-SEP-06 - 01-SEP-06 [Details]
S. Rickard, K. Drakakis, N. Tsakalozos; (2006) Time-varying channel models efficiency 16th European Signal Processing Conference Florence, Italy, , 01-SEP-06 - 01-SEP-06 [Details]
T. Melia, S. Rickard; (2005) Extending the DUET Blind Source Separation technique Workshop on Signal Processing with Adaptive Sparse Structured Representations (SPARS'05) Rennes, France, , 16-NOV-05 - 18-NOV-05 [Details]
S. Rickard, R. de Frein, C. Fearon; (2005) SAGI: Sparsification Algorithm using Greedy Iteration Workshop on Signal Processing with Adaptive Sparse Structured Representations (SPARS'05) Rennes, France, , 16-NOV-05 - 18-NOV-05 [Details]
Gaffney, B., Fagan, A. D., Rickard, S.; (2005) Upper bound on the probability of error for repetition MB-OFDM in the Rayleigh Fading Channel IEEE International Conference on Ultra-Wideband Zurich, Switzerland, , 05-SEP-05 - 08-SEP-05 [Details]
Hurley, N., Rickard, S., Curran, P.; (2005) Parameterized Lifting for Sparse Signal Representations Using the Gini Index Workshop on Signal Processing with Adaptive Sparse Structured Representations (SPARS'05) Rennes, France, , 16-NOV-05 - 18-NOV-05 [Details]
N. Harte, N. Hurley, C. Fearon, and S. Rickard; (2005) Towards a Hardware Realization of Time-Frequency Source Separation of Speech European Conference on Circuit Theory and Design Cork, Ireland, , 01-JAN-05 [Details]
T. Melia, S. Rickard, and C. Fearon; (2005) Histogram Based Blind Source Separation of More Sources than Sensors using a DUET-ESPRIT Technique 13th European Signal Processing Conference Antalya, Turkey, , 01-JAN-05 [Details]
S. Rickard and M. Fallon; (2004) The Gini Index of Speech Conference on Information Sciences and Systems (CISS2004) Princeton, NJ, USA, , 17-MAR-04 - 19-MAR-04 [Details]
S. Rickard, C. Fearon, R. Balan, and J. Rosca; (2004) MINUET: Musical Interference Unmixing Estimation Technique Conference on Information Sciences and Systems (CISS2004) Princeton, NJ, 2004, , 17-MAR-04 - 19-MAR-04 [Details]
S. Rickard; (2004) Searching for Costas Arrays using Periodicity Properties IMA International Conference on Mathematics in Signal Processing The Royal Agricultural College, Cirencester, , 01-JAN-04 [Details]
T. Melia, S. Rickard, and A. Fagan; (2004) Subspace Methods and the DUET Blind Source Separation Algorithm IMA International Conference on Mathematics in Signal Processing The Royal Agricultural College, Cirencester, , 01-JAN-04 [Details]
B. Coleman and S. Rickard; (2004) Cardioid Microphones and DUET IEE Irish Signals and Systems Conference Belfast, Ireland, , 01-JAN-04 [Details]
S. Rickard, C. Fearon, R. Balan, and J. Rosca; (2004) MINUET: Musical Interference Unmixing Estimation Technique Conference on Information Sciences and Systems Princeton, NJ, , 01-JAN-04 [Details]
S. Rickard and M. Fallon; (2004) The Gini Index of Speech Conference on Information Sciences and Systems Princeton, NJ, , 01-JAN-04 [Details]
R. Balan, V. Poor, S. Rickard, and S. Verdu; (2004) Time-Frequency and Time-Scale Canonical Representations of Doubly Spread Channels 12th European Signal Processing Conference Vienna, Austria, , 01-JAN-04 [Details]
R. Balan, J. Rosca, and S. Rickard; (2003) A New Stochastic Model of Speech Signals International Symposium on Optical Science and Technology (SPIE03), San Diego, CA, August 2003 San Diego, CA, , 01-AUG-03 [Details]
S. Rickard, R. Balan, and J. Rosca; (2003) Blind Source Separation Based on Space-Time-Frequency Diversity International Symposium on Independent Component Analysis and Blind Source Separation (ICA2003), April 2003 Nara, Japan, , 01-APR-03 [Details]
R. Balan, J. Rosca, and S. Rickard; (2003) Scalable Non-Square Blind Source Separation in the Presence of Noise IEEE International Conference on Acoustics, Speech, and Signal Processing Hong Kong, , 01-JAN-03 [Details]
R. Balan, J. Rosca, and S. Rickard; (2003) A Stochastic Speech Model Supporting W-Disjoint Orthogonality Conference on Information Sciences and Systems Baltimore, Maryland, , 01-JAN-03 [Details]
J. Rosca, R. Balan, and S. Rickard; (2003) Scalable Audio Separation in the Presence of Noise Proceedings Fortschritte der Akustik Aachen, Germany, , 01-JAN-03 [Details]
R. Balan, J. Rosca, and S. Rickard,; (2003) Non-Square Blind Source Separation under Co-herentNoise by Beamforming and Time-Frequency Masking International Sympo-siumon Independent Component Analysis and Blind Source Separation (ICA2003),Nara, Japan, April 2003 Nara, Japan, , 01-APR-03 [Details]
R. Balan, J. Rosca, and S. Rickard,; (2003) A Stochastic Speech Model Support-ingW-Disjoint Orthogonality Conference on Information Sciences and Systems(CISS2003), Baltimore, MD, March 2003 Baltimore, MD, , 01-MAR-03 [Details]
R. Balan, J. Rosca, and S. Rickard,; (2003) Scalable Non-Square Blind Source Separationin the Presence of Noise International Conference on Acoustics, Speech, and SignalProcessing (ICASSP2003), Hong Kong, April 2003 Hong Kong, , 01-APR-03 [Details]
R. Radke and S. Rickard; (2002) Audio Interpolation International Conference on Vir-tual,Synthetic and Entertainment Audio (AES22), Espoo, Finland, June 2002 Espoo, Finland, , 01-JUN-02 [Details]
R. Radke and S. Rickard; (2002) Audio Interpolation International Conference on Virtual, Synthetic and Entertainment Audio Finland, , 01-JAN-02 [Details]
S. Rickard, O. Yilmaz; (2002) On the W-Disjoint Orthogonality of Speech International Conference on Acoustics, Speech, and Signal Processing (ICASSP2002) Orlando, FL, , 01-JAN-02 , pp.529-532 Available Online [Details]
S. Rickard, R. Balan, and J. Rosca, ,; (2001) Real-Time Time-Frequency Based Blind SourceSeparation International Symposium on Independent Component Analysis andBlind Source Separation (ICA2001), December 2001 San Diego, CA, , 01-DEC-01 , pp.651-656 [Details]
R. Balan, J. Rosca, and S. Rickard,; (2001) Robustness of Parametric Source DemixingIn Echoic Environments International Symposium on Independent ComponentAnalysis and Blind Source Separation (ICA2001), , December 2001 San Diego, CA, , 01-DEC-01 [Details]
R. Balan, J. Rosca, S. Rickard, and J. ORuanaidh,; (2000) The In uence of Window-ingon Time Delay Estimation Conference on Information Sciences and Systems(CISS2000), Volume 1, pages WP1(15-17), Princeton, NJ, March 2000 Princeton, NJ, , 01-MAR-00 , pp.15-17 [Details]
A. Jourjine, S. Rickard, O. Yilmaz; (2000) Blind Separation of Disjoint Orthogonal Signals: Demixing N Sources from 2 Mixtures IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) Istanbul, Turkey, , 01-JAN-00 , pp.2985-2988 Available Online [Details]
S. Rickard and F. Dietrich,; (2000) DOA Estimation of Many W-Disjoint OrthogonalSources from Two Mixtures using DUET IEEE Workshop on Statistical Signaland Array Processing (SSAP2000), Pocono Manor, PA, August 2000 Pocono Manor, PA, , 01-AUG-00 , pp.311-314 [Details]
J. Rosca, J. ORuanaidh, A. Jourjine, and S. Rickard,; (1999) Broadband Direction-Of-ArrivalEstimation Based on Second Order Statistics Neural Information Process-ingSystems (NIPS*99), Denver, CO, December 1999 Denver, CO, , 01-DEC-99 [Details]
B. Rao, S. Rickard, and F. Coetzee,; (1998) Time Series Forecasting from High-DimensionalData with Multiple Adaptive Layers Knowledge Discovery and DataMining (KDD-98), New York, NY, August 1998 New York, NY, , 01-AUG-98 [Details]
R. Gorr, T. Hancock, S. Judd, C. Novak, and S. Rickard,; (1997) Automatic VehicleLocation Using Cameras: A Demonstration Annual meeting of ITS America,Washington D.C., June 1997 Washington D.C, , 01-JUN-97 [Details]
         

Dissertations/Theses

S. Rickard; (2003) Time-frequency and time-scale representations of doubly spread channels. PhD Thesis. 101 pages. Fine Hall Library. Princeton University. Princeton, NJ, USA: Dissertations/Theses [Details]
S. Rickard; (1993) Large sets of frequency hopped waveforms with nearly ideal orthogonality properties. MSc Thesis. 111 pages. Barker Library. Massachusetts Institute of Technology. Cambridge, MA, USA: Dissertations/Theses [Details]
                                                                             

Research

Research Interests

Professor Rickard's research for the past several years has focused on the application of time-frequency methods and sparse signal processing for the blind separation of more sources than sensors. His research interests include time-frequency/scale analysis applied to signal processing, design of optimal wavelets, mobile channel models, blind source localization and separation, multiuser frequency-hop communication systems, and Costas arrays. His research group, the Sparse Signal Processing Group, consists of 8 Ph.D. students, 1 M.Eng. student, and 2 postdocs.

Research Projects

Sponsor : European Science Foundation (ESF)
Title : COST Action MP0801 Physics of Competition and Conflicts
Start Date / End Date : 01-FEB-10 / 31-JAN-11
Sponsor : Enterprise Ireland (EI)
Title : Darius: Diagnosing coronary artery disease using heart sounds
Start Date / End Date : 01-FEB-10 / 08-MAY-11
Sponsor : National Digital Research Centre (NDRC)
Title : Heartphone
Start Date / End Date : 01-APR-09 / 31-DEC-10
Sponsor : National Digital Research Centre (NDRC)
Title : CTone
Start Date / End Date : 15-FEB-09 / 14-FEB-11
Sponsor : Science Foundation Ireland (SFI)
Title : Stokes Professorship and Lectureship Awards 2007
Start Date / End Date : 01-SEP-08 / 31-AUG-13
Sponsor : Science Foundation Ireland (SFI)
Title : Costas Arrays
Start Date / End Date : 01-SEP-08 / 31-AUG-11
Sponsor : Science Foundation Ireland (SFI)
University College Dublin (UCD)
Title : UCD CASL Sense Tile System
Start Date / End Date : 01-DEC-07 / 30-NOV-08
Sponsor : University College Dublin (UCD)
Title : Blind source separation using Speech Time Frequency Masks
Start Date / End Date : 01-APR-04 / 30-OCT-05
Sponsor : Enterprise Ireland (EI)
Title : Speech Optimised Source Separation in Echoic Environments (SOSSEE)
Start Date / End Date : 01-OCT-04 / 30-SEP-05
Sponsor : Irish Research Council for Science Engineering and Technology (IRCSET)
Title : Time-Frequency and Time-Scale Representations of Signals and their Applications in Blind Source Separation. Candidate: Conor Fearon
Start Date / End Date : 01-OCT-04 / 31-MAR-08
Sponsor : Irish Research Council for Science Engineering and Technology (IRCSET)
Title : The Digital Speech therapist (A computer based feedback system for treatment of speech impairments). Candidate: Ruairi de Frein
Start Date / End Date : 01-OCT-04 / 31-MAR-08
Sponsor : Science Foundation Ireland (SFI)
Title : Time-frequency/time-scale analysis, sparse signal representation theory, and finite field theory for signal processing application
Start Date / End Date : 01-SEP-05 / 31-AUG-10
Sponsor : UCD College of Engineering, Mathematical and Physical Sciences
Title : Distributed Environmental enabling problem-solving in Engineering and Architecture
Start Date / End Date : 01-SEP-05 / 01-SEP-06
Sponsor : University College Dublin (UCD)
Title : Project Darius - a multichannel cardiac auscultation device
Start Date / End Date : 01-DEC-06 / 30-NOV-07