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Publications

Book Chapters

• N. Patwari, A. O. Hero, J. A. Costa, Learning Sensor Location from Signal Strength and Connectivity, in Secure Localization and Time Synchronization for Wireless Sensor and Ad Hoc Networks, editors: Radha Poovendran, Cliff Wang, and Sumit Roy, Advances in Information Security series, Vol. 30, Springer, 2006, ISBN 978-0-387-32721-1.
• N. Patwari, "Cooperative Localization using Sensor Networks", Encyclopedia of Geographic Information Science, edited by Shashi Shekhar and Hui Xiong, Springer, 2008, ISBN: 978-0-387-30858-6.
• Neal Patwari, Piyush Agrawal, "Calibration and Measurement of Signal Strength for Sensor Localization", in Localization Algorithms and Strategies for Wireless Sensor Networks, edited by Guoqiang Mao, University of Sydney, Australia; Baris Fidan, National ICT Australia and Australian National University, Australia, Information Science Reference, May 2009, ISBN 978-1-60566-396-8.

Technical Reports

• Joey Wilson and Neal Patwari, Radio Tomographic Imaging With Wireless Networks Tech Report, 16 Sep 2008
• P. Agrawal and N. Patwari, Correlated Link Shadow Fading in Multi-hop Wireless Networks, Tech Report arXiv:0804.2708v2, 18 Apr 2008.

Journal Publications

• N. Patwari, J. Ash, S. Kyperountas, A. O. Hero, R. M. Moses, N. S. Correal, Locating the Nodes: Cooperative Localization in Wireless Sensor Networks, IEEE Signal Processing Magazine, special issue on Signal Processing in Positioning and Navigation, vol. 22, no. 4, July 2005, pp. 54-69.
• J. A. Costa, N. Patwari, A. O. Hero, Distributed Weighted Multidimensional Scaling for Node Localization in Sensor Networks, ACM Transactions on Sensor Networks, Feb. 2006, vol. 2, no. 1, pp. 39-64.
• N. Patwari, A. O. Hero, M. Perkins, N. S. Correal, R. J. O'Dea, Relative Location Estimation in Wireless Sensor Networks, IEEE Transactions on Signal Processing, special issue on Signal Processing in Networks, vol. 51, no. 8, August 2003, pp. 2137-2148.
• N. Patwari, A. Safaai-Jazi, High-Gain Low-Sidelobe Double-Vee Dipoles, IEEE Transactions on Antennas and Propagation, vol. 48, no. 2, Feb 2000.
• G. D. Durgin, N. Patwari, T. S. Rappaport, Improved 3D Ray Launching Method for Wireless Propagation Prediction, IEE Electronics Letters, 31 July 1997, Vol. 33, No. 16.

Conference Publications

• A. Farhang, N. Patwari, "Cognitive Geolocation: Learning Location by Listening to the Radio", in Proc. of the Software Defined Radio (SDR) Forum 2008 Technical Conference, Washington, DC, Oct. 28, 2008.
• J. Zhang, M. H. Firooz, N. Patwari, S. K. Kasera, Advancing Wireless Link Signatures for Location Distinction, 14th Int. Conf. on Mobile Computing and Networking (Mobicom-08), Sep. 14-19, San Francisco, CA.
• N. Patwari and P. Agrawal, Effects of Correlated Shadowing: Connectivity, Localization, and RF Tomography, IEEE/ACM IPSN 2008, April 22-24, 2008, St. Louis. (slides).
• N. Patwari and P. Agrawal, NeSh: A joint shadowing model for links in a multi-hop network, in Proc. IEEE Intl. Conference on Acoustic, Speech, and Signal Proessing (ICASSP'08), March 30 - April 4, 2008, Las Vegas. poster
• N. Patwari and S. K. Kasera, Robust Location Distinction using Temporal Link Signatures, in Proc. of 13th Int. Conf. on Mobile Computing and Networking (Mobicom-07), pages 111-122, Montreal, QC, Sept 12, 2007. Slides.
• N. Patwari, and A. O. Hero, Signal Strength Localization Bounds in Ad Hoc and Sensor Networks when Transmit Powers are Random, in Proceedings of the Fourth IEEE Workshop on Sensor Array and Multichannel Processing (SAM-2006), Special session honoring Peter M. Schultheiss, "A Thirty Year Survey of Performance Bounding in Signal and Array Processing". Waltham, MA, July 12-14, 2006, pp. 299-303.
• N. Patwari, and A. O. Hero, Indirect Radio Interferometric Localization via Pairwise Distances, in Proceedings of the Third IEEE Workshop on Embedded Networked Sensors (EmNets 2006), Boston, MA, May 30-31, 2006, pp. 26-30.
• N. Patwari, A. O. Hero, and A. Pacholski, Manifold Learning Visualization of Network Traffic Data, in Proceedings of the 2005 Workshop on Mining Network Data (MineNet'05), Philadelphia, PA, August 26, 2005, pp. 191-196.
• N. Patwari and A. O. Hero, Adaptive Neighborhoods for Manifold Learning-based Sensor Localization, in Proceedings of the 2005 IEEE Signal Processing and Wireless Communications Conference (SPAWC'05), New York City, 5-8 June 2005, pp. 1098-1102.
• J. A. Costa, N. Patwari, A. O. Hero, Achieving High-Accuracy Distributed Localization in Sensor Networks, in Proceedings of the 2005 IEEE Int. Conf. on Acoustics, Speech, and Signal Processing (ICASSP'05), Philadelphia, PA, March, 2005, vol. 3, pp. 640-644. A Student Paper Contest Finalist.
• N. Patwari, A. O. Hero, Manifold Learning Algorithms for Localization in Wireless Sensor Networks, in Proceedings of the 2004 IEEE Int. Conf. on Acoustics, Speech, and Signal Processing (ICASSP'04), Montreal, Quebec, Wed. May 19, 2004, vol. 3, pp. 857-860.
• N. Patwari, A. O. Hero, B. Sadler, Hierarchical Censoring Sensors for Change Detection, in Proceedings of the 2003 IEEE Workshop on Statistical Signal Processing, St. Louis, MO, Sept. 29, 2003, pp. 21-24.
• N. Patwari, A. O. Hero, Using Proximity and Quantized RSS for Sensor Localization in Wireless Networks, in Proceedings of the 2nd International ACM Workshop on Wireless Sensor Networks and Applications (WSNA'03), San Diego, CA, Sept. 19, 2003, pp. 20-29.
• N. Patwari, A. O. Hero, Hierarchical Censoring for Distributed Detection in Wireless Sensor Networks, in Proceedings of IEEE Int. Conf. on Acoustics, Speech, and Signal Processing (ICASSP'03), April 2003, vol. 4, pp. 848-851.
• N. Patwari, A. O. Hero, Location Estimation Accuracy in Wireless Sensor Networks, in Proceedings of 2002 IEEE Asilomar Conference on Signals and Systems, Pacific Grove, CA, Nov. 2002, vol. 2, pp. 1523-1527.
• N. Patwari, Y. Wang, R. J. O'Dea, The Importance of the Multipoint-to-Multipoint Indoor Radio Channel in Ad Hoc Networks, in Proceedings of the IEEE Wireless Communication and Networking Conference (WCNC'02), Orlando FL, March 2002.
• N. S. Correal, N. Patwari, Wireless Sensor Networks: Challenges and Opportunities, in Proceedings of the 2001 MPRG/Virginia Tech Wireless Symposium, June 2001.
• N. Patwari, R. J. O'Dea, Y. Wang, Relative Location in Wireless Networks, in Proceedings of the Spring 2001 IEEE Vehicular Technology Conference (VTC), Rhodes, Greece, May 2001, vol. 2, pp. 1149-1153.

Symposium and Workshop Presentations

• J. Gaines, Entropic Analysis of Spectrum Sensing for Cognitive Radio, oral presentation at the University of Utah Undergraduate Research Symposium, Salt Lake City, April 3, 2008.
• A. Farhang, Cognitive Geolocation, oral presentation at the University of Utah Undergraduate Research Symposium, Salt Lake City, April 3, 2008.
• N. Patwari, J. Croft, and P. Agrawal, Localization is Sensor Data Dimensionality Reduction, poster presentation at SAMSI 2007-2008 Program on Environmental Sensor Networks Opening Workshop, Research Triangle Park, NC, January 14, 2008.

Demonstrations

• N. Patwari, P. Agrawal, A. O. Hero, Demonstrating Distributed Signal Strength Location Estimation, in Proceedings of the Fourth Int. Conf. on Embedded Networked Sensor Systems (SenSys'06), Boulder, CO, Nov. 1-3, 2006, pp. 353-354. (Poster and Video Clip 1, Clip 2, and Clip 3)

Theses

• N. Patwari, Location estimation in sensor networks, University of Michigan Dept. of EECS, Sept. 2005.

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