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Home     Staff     Research     Papers     Reports and Presentations     Collaborators    

Research Papers

Books

·   S. A. Zekavat, and M. Buehrer, Handbook of Position Location; Theory, Practice and Advances, Wiley-IEEE Press; Sept. 2011.

Book Chapters

·   S. A. Zekavat, S. Kansal, and A. Levesque, Chapter “ Wireless Positioning Systems: Operation, Application, and Comparison,” in, Handbook of Position Location; Theory, Practice and Advances, Wiley-IEEE press; 2011.

·   S. A. Zekavat , Chapter “ An Introduction to DOA Estimation Techniques via Antenna Arrays,” in, Handbook of Position Location; Theory, Practice and Advances, Wiley-IEEE Press; 2011.

·   Pourkhaatoun, and S. A. Zekavat , “An Introduction to TOA Estimation Techniques for Narrow and Wide band Communications,” in, Handbook of Position Location; Theory, Practice and Advances, Wiley-IEEE Press; 2011

·   W. Xu, Z. Wang, and, S. A. Zekavat, “An Introduction to NLOS Identification and Localization Techniques,” in, Handbook of Position Location; Theory, Practice and Advances, Wiley-IEEE Press; 2011.

·   S. A. Zekavat, “An Introduction to Wireless Channel Modeling and its Impact on Localization,” in, Handbook of Position Location; Theory, Practice and Advances, Wiley-IEEE Press; 2011.

·   S. A. Zekavat,, “An Introduction to Wireless Local Positioning Systems,” in, Handbook of Position Location; Theory, Practice and Advances, Wiley-IEEE Press; 2011.

·   S. A. Zekavat, and Z. Wang, Chapter, “Node Localization in Ad-hoc Networks,” in the Book: Handbook of Research on Mobility and Computing: Evolving Technologies and Ubiquitous Impacts, Editors: Maria Manuela Cruz-Cunha, Poly-technic Institute of Cavado and Ave, and Fernando Moreira, University of Portugal, Portugal, IGI-Global, April 2011, Invited

·   X. Li and and S. A. Zekavat Chapter:, “Evaluating Channel Availability Based on Traffic Pattern Prediction in Cognitive Radio Systems,” in the Book: Cognitive Radio Systems, Editor: W. Wang, IN-TECH, November 2009, Invited

·   S. A. Zekavat and H. Tong, Chapter: , “Single Node Multi-Antenna Positioning Systems for Airport Security,” of the book: Protecting Airline Passengers in the Age of Terrorism. Editors: Paul Seidenstat (Temple University), and, Francis X. Splane (Pennsylvania State University); Praeger Publishers, August 2009, Invited

·   S. A. Zekavat, and C. R. Nassar, Contribution in the Chapter: , “Channel Modeling / Characteristics ,” of the book: Adaptive Antennas Array Techniques, Editor: Chandran, Springer Verlag, Jan 2004, Invited.

Patents

·   S. A. Zekavat, Wireless Local Positioning System (WLPS); US Patent 7,489,935;

Journal Articles

·   Mohsen Jamalabdollahi and S. A. Zekavat, “High Resolution ToA Estimation via Optimal Waveform Design ,” IEEE Transactions on Communications, Jan 2017

·   Mohsen Jamalabdollahi and S. A. Zekavat, “ToA Ranging and Layer Thickness Computation in Non-homogeneous Media,” IEEE Transactions on Geoscience and Remote Sensing, vol. 55, pp. 742-752, Jan 2017

·   Amir Torabi and S. A. Zekavat, “Near-Ground Channel Modeling for Distributed Cooperative Communications,” IEEE Transactions on Antennas and Propagation, vol. 64, pp. 2494-2502, July 2016

·   Amir Torabi and S. A. Zekavat, “Wideband directional channel characterization for multiuser MIMO systems over a random rough dielectric ground,” IEEE Transactions on Wireless Communications, vol. 15, pp. 3103-3113, May 2016

·   Mohsen Jamalabdollahi and S. A. Zekavat, “Joint Neighbor Discovery and Time of Arrival Estimation in Wireless Sensor Networks via OFDMA,” Sensors Journal, IEEE, vol. 15, pp. 5821-5833, 2015

·   S. G. Ting, S. A. Zekavat and O. Abdelkhalik, “Space-based Solar Power transfer via LEO satellites network: Doppler Effect Analysis,” Aerospace and Electronic Systems, IEEE Transactions on, vol. 51, pp. 18-30, 2015

·   X. Li, and S. A. Zekavat, “ Number of Clusters Formed in An Emergency Cognitive Radio Network And Upper Bound of Network Simultaneous Transmission Capacity,” IET Communications, vol. 8, no. 14, 25 Sept. 2014, p. 2516–2527

·   S. G. Ting, S. A. Zekavat andKaveh Pahlavan, , “ DOA-Based Endoscopy Capsule Localization and Orientation Estimation via Unscented Kalman Filter,” IEEE Sensors Journal, vol. 14, no. 11, 16 Sept. 2014, pp. 3819-3829.

·   A. Reisi, S. G. Ting, and S. A. Zekavat, “ Circular Arrays and Inertial Measurement Unit for DOA/TOA-based Endoscopy Capsule Localization: Performance and Complexity Investigation,” ,IEEE Sensors Journal, vol. 14, no. 11, 16 Sept. 2014, pp. 3791-3799.

·   M. Pourkhaatoun, andS. A. Zekavat, “ High Resolution Multi-band Range Estimation: Concatenated Spectrum vs. Fusion-based Methods,” IEEE Systems Journal Special Issue on Sensor Networks for Advanced Localization Systems, vol. 08, no. 1, pp. 83-92, Mar. 2014.

·   M. Pourkhaatoun, andS. A. Zekavat, “ High Resolution Cognitive Radio-Based Concatenated Spectrum Time-of-Arrival Estimation,” Springer International Journal of Wireless Information Networks, special issue, December 2012, Vol. 19, no. 4, pp. 341-351.

·   W. Xu, and S. A. Zekavat, “ A High Performance Measure for Non-Line-of-Sight Identification in MIMO-OFDM-based Sensor Networks,,” IEEE Systems Journal Special Issue on Sensor Networks for Advanced Localization Systems, vol. 08, no. 1, pp. 125-130, March 2014.

·   S. G. Ting, S. A. Zekavat, and O. Abdelkhalik,, “ A Weighted Measurement Fusion Kalman Filter Implementation for UAV Navigation,”Aerospace Science and Technology, 20 Dec. 2012, DOI information: 10.1016/j.ast.2012.11.012.

·   Z. Wang, and S. A. Zekavat, “Omni Mobile Node Localization in NLOS Scenarios,” IEEE Transactions on Mobile Computing, in the third round of review.

·   W. Xu, and S. A. Zekavat, “Novel High Performance MIMO-OFDM based Measures for NLOS Identification in Time-Varying Frequency and Space Selective Channels,” IEEE Communication Letters, vol. 16, no. 02, pp. 212-215, 2012.

·   I. Aslam, and S. A. Zekavat, “Channel Path Loss Modeling for Near Ground Antennas,” IET Sensor Systems, vol. 2. , no. 2, pp. 103-107, 2012.

·   S. G. Ting, O. Abdelkahlik, and S. A. Zekavat, “Constraint Estimation of Spacecraft Positions,” AIAA Journal of Guidance, Control, and Dynamics, Journal of Guidance, Control, and Dynamics, vol. 35, no. 2, 2012.

·   S. G. Ting, O. Abdelkhalik, and S. A. Zekavat, “Implementation of Differential Geometric Filter for Spacecraft Formation Orbit Estimation,” International Journal of Aerospace Engineering, vol. 2012, Article ID 910496, 13 pages, 2012. doi:10.1155/2012/910496.

·   W. Xu, Z. Wang, and S. A. Zekavat, “Non-Line-of-Sight Identification in Wireless Localization via Phase Difference Statistics across Two Antenna Elements,” IET Communications, Accepted.

·   I. Ahmed, W. F. Perger and S. A. Zekavat, “Effects of Ground Constituent Parameters on Array Mutual Coupling for DOA Estimation,” International Journal of Antennas and Propagation, Special Issue on Mutual Coupling in Antenna Arrays 2011, vol. 2011 (2011), Article ID 425913, 5 pages, doi:10.1155/2011/425913

·   S. G. Ting, O. Abdelkhalik, and S. A. Zekavat, “High Performance Spacecraft Formation Orbit Estimation using WLPS-based Relative Position Measurements: Signal Transmission Time Delay Modeling,” EURASIP Journal on Navigation and Observation, vol. 2011 (2011), Article ID 654057, 12 pages, doi:10.1155/2011/654057.

·   M. Pourkhaatoun, and S. A. Zekavat, “A Novel High Resolution ICA-based TOA Estimation Technique for Multi-path Environments,” IET Communications, Accepted.

·   S. A. Zekavat and , F. Emdad, “Achieving Higher Uplink Performance and Capacity via Non Overlapping Window Adaptive Maximum Noise Fraction Beamforming Technique,” IET Communications, vol. 5, no. 5, pp. 598–605, 2011.

·   X. Li, and S. A. Zekavat, “Spectrum Sharing across Multiple Service Providers via Cognitive Radio Nodes,” IET Communications, vol. 04, no. 5, 2010, pp. 551–561.

·   P. T. Keong, and S. A. Zekavat, “Achieving Directionality and Transmit Diversity via Integrating Beam Pattern Scanning (BPS) Antenna Arrays and OFDM,” Journal of Wireless Sensor Networks, pp.186-196, Feb 01 2010, DOI: 10.4236/wsn.2010.22024

·   P. T. Keong, and S. A. Zekavat, “Beam Pattern Scanning (BPS) versus Space-Time Block Coding (STBC) and Space-Time Trellis Coding,” International Journal of Communications, Network and System Sciences, IJCNS, vol.2, no. 8, pp. 469-479, November 2009, Invited paper.

·   W. Wang, and S. A. Zekavat, “A Novel Semi-distributed Localization via Multi-node TOA-DOA Fusion,” IEEE Transactions on Vehicular Technology, vol. 58, no. 7, pp. 3426 – 3435, Sept. 2009.

·   W. Xu, S. A. Zekavat, and H. Tong, “A Novel Spatially Correlated Multi-User MIMO Channel Modeling: Impact of Surface Roughness,” IEEE Transactions on Antennas and Propagations, vol. 57, no. 8, pp. 2429-2438, August 2009.

·   X. Li, and S. A. Zekavat, “Cognitive Radio Based Spectrum Sharing: Evaluating Channel Availability via Traffic Pattern Prediction,” Journal of Communications and Networks, JCN: Special Issue on Cognitive Radio: A Path in the Evolution of Public Wireless Networks, vol. 11, no. 2, April 2009.

·   W. Wang, and S. A. Zekavat, “Comparison of Semi-Distributed Multi-Node TOA-DOA Fusion Localization and GPS-Aided TOA (DOA) Fusion Localization for MANETs,” EURASIP Journal on Advances in Signal Processing, vol. 2008, Article ID 439523, 16 pages, 2008. doi:10.1155/2008/439523, 2008.

·   H. Tong, J. Pourrostam, and S. A. Zekavat, “Optimum Beam-forming for a Novel Wireless Local Positioning System: A Stationarity Analysis and Solution,” EURASIP Journal on Advances in Signal Processing, vol. 2007, Article ID 98243, 12 pages, 2007.

·   H. Tong and S. A. Zekavat, “A Novel Wireless Local Positioning System via Asynchronous DS-CDMA and Beam-forming: Implementation and Perturbation Analysis,” IEEE Transactions on Vehicular Technology, vol. 56, no. 3, pp. 1307–1320, May 2007.

·   S. A. Zekavatand P. T. Keong, “Beam-pattern-scanning dynamic-time block coding: achieving high performance,” IEEE Transactions on Wireless Communications, vol. 5, no. 9, pp. 2334–2337, Sept. 2006

·   S. A. Zekavat and X. Li,, “Ultimate Dynamic Spectrum Allocation via User Central Wireless Systems,” Journal of Communications, vol. 01, no. 01, pp. 60–67, April 2006.

·   H. Tong, and S. A. Zekavat, “Spatially Correlated MIMO Channel: Generation via Virtual Channel Representation,” ,” IEEE Comm. Letters, vol. 10, no. 5, pp. 332–334, May 2006.

Conference Proceedings

·   A. Torabi, and S. A. Zekavat, “ Mobile Wireless Channel Characterization for Multi-Antenna Systems over a Random Rough Dielectric Ground,” proceedings IEEE PIMRC 2014, Sept. 02-05 2014, Washington DC

·   M. Athi, and S. A. Zekavat, “A novel parallel polynomial rooting technique for root-MUSIC,” proceedings IEEE PIMRC 2014, Sept. 02-05 2014, Washington DC.

·   Mohsen JamalabdollahiS. A. Zekavat, “Energy Efficient Ranging in Wireless Sensor Network via a New Time Slot Based Round-Trip Algorithm,” proceedings IEEE Aerospace Conference, March 2014

·   S. Giri Vankita, G. Price and S. A. Zekavat, “Generic SDR Architecture: Vendor Independent Implementations,” proceedings IEEE Aerospace Conference, March 2014;

·   A. Alrasheed and S. A. Zekavat, “Rough Surface Impact on Spatial Correlation: 30, 60 and 300 GHz,” proceedings IEEE Globecom Conference, Atlanta, Dec. 2013

·   A. Reisi, S. G. Ting, and S. A. Zekavat, “High Performance DOA/TOA-based Endoscopy Capsule Localization and Tracking via 2D Circular Arrays and Inertial Measurement Unit,” ,” proceedings IEEE WiSEE Conference, Baltimore, Nov. 2013

·   S. Giri Vankita, G. Price and S. A. Zekavat, “A Novel Synchronization Method for Active Positioning via DSSS: Achieving Low Resource Usage and Latency,” proceedings IEEE WiSEE Conference, Baltimore, Nov. 2013

·   S. G. Ting and S. A. Zekavat, “Space-based Solar Power via LEO Satellite Networks: Synchronization Efficiency Analysis,” proceedings IEEE Aerospace Conference, Big Sky, MT, March 03-09, 2013.

·   Xiukui Li and S. A. Zekavat, “Connectivity analysis of group-based cognitive radio networks,” proceedings 2012 IEEE International Symp. on a World of Wireless, Mobile and Multimedia Networks (WoWMoM), pp.1-6, San Francisco, CA, 25-28 June 2012.

·   B. Bastaami, and S. A. Zekavat, “On the Error Probability Of Wideband Spatially Correlated Coherent MIMO Channels,” proceedings IEEE ICC 2012, Ottawa, ON, June 09-15, 2012.

·   S. G. Ting, S. A. Zekavat, “Space-Based Wireless Solar Power transfer via a network of LEO satellites: Doppler Effect Analysis,” proceedings IEEE Aerospace Conference, Big Sky, MT, March 03-09, 2012.

·   W. Xu, and S. A. Zekavat, “High Performance Non-Line-of-Sight Identification using MIMO-OFDM Space Frequency Correlation Statistics,” proceedings IEEE PIMRC 2011, Sept. 11–14, 2011, Toronto, CA.

·   M. Pourkhaatoun, and S. A. Zekavat, “Concatenated Spectrum Multi-Band TOA Estimation,” proceedings IEEE PIMRC 2011, Sept. 11–14, 2011, Toronto, CA

·   S. A. Zekavat, andO. Abdlekhalik, “An Introduction to Space-Based Power Grids: Feasibility Study,” proceedings, IEEE Aerospace Conf., Big Sky, MT, Mar. 06-12, 2011.

·   W. Xu, and S. A. Zekavat, “Non-Line-of-Sight Identification via Space-Frequency Correlation in MIMO-OFDM Systems: a Preliminary Study,” proceedings IEEE MILCOM’2010, Nov. 03 – 06, 2010, San Jose, CA; Won Student Travel Award.

·   M. Pourkhaatoun, and S. A. Zekavat, “High Precision Concatenated Spectrum Cognitive Radio-Based Range Estimation,” proceedings IEEE MILCOM’2010, Nov. 03 – 06, 2010, San Jose, CA.

·   Z. Wang, andS. A. Zekavat, “A New TOA-DOA Based Node Localization for Mobile Ad-hoc Networks: Achieving High Performance and Low Complexity”, proceedings IEEE ICT 2010 Conference, Qatar, April 2010.

·   S. A. Zekavat, O. Abdelkhalik, S. G. Ting, and D. Fuhrmann,, “A Novel Space-Based Solar Power Collection via LEO Satellite Networks: Orbital via a Novel Wireless Local Positioning System,,” ,” proceedings IEEE Aerospace Conf., Mar. 07–12, 2010, Big Sky, MT.

·   S. G. Ting, O. Abdelkhalik, and S. A. Zekavat, “Differential Geometric Estimation for Spacecraft Formations Orbits via a Novel Wireless Positioning,” proceedings IEEE Aerospace Conference, March 07–12, 2010, Big Sky, MT.

·   M. Roddewig, S. Nooshabadi, and S. Zekavat, “Design of a Costas Loop Down Converter,” proceedings IEEE Mid West Symposium on Circuits and Systems (MWSCAS09), August 2-5, 2009, Cancún, México,

·   S. A. Zekavat, O. Abdelkhalik, and D. Fuhrmann,, “Wireless Solar Power Transfer via Distributed LEO Satellites,” the National workshop on New Research Directions for Future Cyber-Physical Energy Systems, Organized by NITRD, NSF, NIST, NSA, June 3, 4, 2009, Baltimore, MD.

·   X. Li, andS. A. Zekavat, “Distributed Channel Assignment in Cognitive Radio Networks,” proceedings IWCMC 2009, Germany, June 22–25, 2009.

·   S. G. Ting, O. Abdelkhalik, and S. A. Zekavat, “Spacecraft Constellation Orbit Estimation via a Novel Wireless Positioning System,” proceedings AAS/AIAA Space Flight Mechanics Meeting, Savannah, GA, Feb. 8-12, 2009

·   Z. Wang, W. Xu, and S. A. Zekavat, “A novel LOS and NLOS localization technique,” proceedings IEEE DSP/SPE workshop 2009, Florida, Jan. 4-7, 2009.

·   W. Xu, and S. A. Zekavat, “Spatially Correlated Multi-user Channels: LOS vs. NLOS” proceedings IEEE DSP/SPE workshop 2009, Florida, Jan. 4-7, 2009, Invited Paper.

·   H. Tong, and S. A. Zekavat, “Diversity-Multiplexing Tradeoff with Arbitrary Doppler Spectrum,” proceedings IEEE VTC Fall 2008 Conference, 21 – 24 Sept. Calgary, Canada, 2008.

·   Z. Wang, C. Li, and S. A. Zekavat, “A Novel Smart Antenna Calibration Technique,” proceedings Virginia Tech Annual Wireless Symposium, June 2 – 4, 2008.

·   M. Pourkhaatoun, and S. A. Zekavat, “A Novel ICA-based TOA Estimation Technique: Achieving High Resolution, High Reliability, and, Low Cost,” proceedings IEEE International Workshop on Signal Processing and its Applications, WOSPA’08, UAE, March 18-20, 2008.

·   Z. Wang, and S. A. Zekavat “A Novel Semi-distributed Cooperative Localization Technique for MANET: Achieving High Performance,” proceedings IEEE WCNC Conference, 2008, March 31 – April 03, Las Vegas, 2008.

·   S. A. Zekavat, O. Abdelkhalek, and H. Tong,, “Aircraft Navigation and Spacecraft Coordination via Wireless Local Positioning Systems,” proceedings 2008 Integrated Comm. Navigation and Surveillance (ICNS) Conference, Bethesda, MD, May 5–7, 2008.

·   H. Tong, and S. A. Zekavat, “On the Suitable Environments of the Kronecker Product Form in MIMO Channel Modeling,” proceedings IEEE WCNC Conference, 2008, March 31 – April 03, Las Vegas, 2008

·   H. Tong, and S. A. Zekavat, “Asymptotic Outage Analysis of Large Size Correlated MIMO Systems,” proceedings IEEE WCNC Conference, 2008, March 31 – April 03, Las Vegas, 2008.

·   S. A. Zekavat, A. Kolbus, X. Yang, Z. Wang, J. Pourrostam, and M. Pourkhaatoon, “A Novel Implementation of DOA Estimation for Node Localization on Software Defined Radios: Achieving High Performance with Low Complexity,” proceedings IEEE ICSPC 2007, Dubai, UAE, 26 – 27 Nov. 2007.

·   W. Xu, S. A. Zekavat, and H. Tong, “Novel Approach for Spatially Correlated Multi-User MIMO Channel Modeling: Impact of Surface Roughness and Directional Scattering,” proceedings Forty-Fourth Annual Allerton Conference on Communication, Control, and Computing, Sept. 2007.

·   X. Li, and S. A. Zekavat, “Traffic Pattern Prediction and Performance Investigation for Cognitive Radio Systems,” proceedings IEEE WCNC Conference, 2008, March 31–April 03, Las Vegas, 2008.

·   H. Tong, and S. A. Zekavat, “Capacity and Error Performance of Correlated MIMO Systems via Virtual Channel Representation,” proceedings IEEE PIMRC 2007, Athens, Greece, 3 – 6 Sept. 2007.

·   T. Abdelhakim, and S. A. Zekavat, “On the Error Floor of MC-CDMA Systems over Rayleigh Fading Channels: Uplink vs. Downlink,” proceedings IEEE ICSPC 2007, Dubai, UAE, 26–27 Nov. 2007.

·   M. Pourkhaatoun, and S. A. Zekavat, and J. Pourrostam, “A High Resolution ICA Based TOA Estimation Technique,” proceedings IEEE Radar’07, 17 – 20 April, 2007, Boston.

·   S. A. Zekavat, K. Hungwe, and W. Bulleit,, “A Novel Integrated Class/Web-based Curriculum for the Course Introduction to Electrical Engineering for non-majors: Progresses made lessons learned,” proceedings IEEE Frontiers in Education, FIE 2007, Milwaukee, Oct. 10–13, 2007.

·   X. Li, and S. A. Zekavat, “Inter-Vendor Dynamic Spectrum Sharing: Feasibility Study and Performance Evaluation,” proceedings IEEE DySPAN 2007, April, 17–20, 2007.

·   J. Pourrostam, S. A. Zekavat, and H. Tong “Novel Direction-of-Arrival Estimation Techniques for Periodic Sense Local Positioning Systems in Wireless Environment,” proceedings IEEE Radar’07, 17 – 20 April, 2007, Boston.

·   S. A. Zekavat, “,”

·   J. Pourrostam, S. A. Zekavat, and, M. Pourkhatoon, “Super-Resolution Direction-of-Arrival Estimation via Blind Signal Separation Methods,” proceedings IEEE Radar’07, 17 – 20 April, 2007, Boston.

·   Z. Wang, and S. A. Zekavat, “MANET Localization via Multi-node TOA-DOA Optimal Fusion,” proceedings IEEE Milcom’06, Washington DC, Oct. 22 – 26, 2006.

·   S. A. Zekavat, “A Wireless Local Positioning System for Road Safety,” Proceedings Research Opportunities in Radio Frequency Identification (RFID) Transportation Applications Conference 2006, Washington DC, Oct. 17 – 18, 2006.

·   H. Mehta, and S. A. Zekavat, “Dynamic Resource Allocation via Clustered MC-CDMA in Multi-Service Ad-hoc Networks: Achieving Low Interference Temperature and Low Code Reuse Distance,” proceedings IEEE DySPAN 2007, April, 17–20, 2007.

·   R. Kulkarni, and S. A. Zekavat, “Smart inter-vendor spectrum allocation in multi-vendor environments,” proceedings IEEE IWCMC 2006, Vancouver Canada, July 3–6, 2006.

·   K. Hungwe, S. A. Zekavat, and G. Archer,, “Gender perspectives on the optimization of the interdisciplinary course curriculum introduction to electrical engineering for non-major,” proceedings American Society of Engineering Education Annual Conference, ASEE06, Chicago, IL, June, 18-21 2006.

·   H. Tong, and S. A. Zekavat, “A simple beam-forming-SIMO merger in spatially correlated channel via virtual channel representation,” proceedings IEEE Globecom 2005, St. Louis, 28 Nov.–02 Dec., 2005.

·   S. A. Zekavat, and X. Li,, “User-Central Wireless System: Ultimate Dynamic Channel Allocation,” proceedings IEEE DySPAN05, Baltimore, Nov. 8–11, 2005, Won NSF Graduate Student Travel Award

·   Hui Tong and S. A. Zekavat, "Wireless Local Positioning System via DS-CDMA and Beamforming: A Perturbation Analysis", WCNC 2005, New Orleans, LA, Mar 2005.

·   S. A. Zekavat, K. Hungwe, and S. Sorby, “An optimized approach for teaching the interdisciplinary course electrical engineering for non majors,” proceedings 2005 American Society of Engineering Education Annual Conference, ASEE05, Portland, Oregon, June 12-15, 2005.

·   R. Kulkarni, and S. A. Zekavat, “Smart versus blind inter-vendor spectrum sharing for MC-CDMA systems,” proceedings The University of Texas at Austin, WNCG04 Symposium, Austin, TX, Oct. 2004.

·   S. A. Zekavat, Hui Tong and Jindong Tan, "A Novel Wireless Local Positioning System for Airport (Indoor) Security", SPIE 04, Denver, CO, Aug 2004.

·   P. T. Keong, and S. A. Zekavat, “Space-time trellis codes (STTC) versus Beam Pattern Scanning (BPS) scheme,” proceedings IEEE VTC Fall 2004, Los Angeles, CA, USA, Sept. 26-29, 2004.

·   P. T. Keong, andS. A. Zekavat, “Space-time block codes (STBC) versus beam pattern scanning (BPS): Capacity, performance, complexity and spectrum efficiency evaluation,” proceedings IEEE wireless and Networking conference, WCNC04, Atlanta, GA, March 21-25, 2004

·   S. A. Zekavat, “A novel application for wireless communications in vehicle early warning,” proceedings IEEE Consumer Comm. and Networking 2004, Las Vegas, NV, Jan. 5-8 2004

·   P. T. Keong, and S. A. Zekavat, “A merger of OFDM and antenna array beam pattern scanning (BPS): Achieving directionality and transmit diversity,” proceedings IEEE 37th Asilomar conference on Signals, Systems and Computers, Nov. 9-12, 2003

·   A. Pezeshk, and S. A. Zekavat, “Inter-vendor spectrum sharing in DS-CDMA and MC-CDMA systems,” proceedings IEEE 37th Asilomar conference on Signals, Systems and Computers, Nov. 9-12, 2003

·   S. A. Zekavat, F. Emdad, and M. Kirby, “A merger of maximum noise fraction beam forming and MC-CDMA systems: Perturbation analysis in dispersive channels,” proceedings IEEE 37th Asilomar conference on Signals, Systems and Computers, Nov. 9-12, 2003.

·   P. T. Keong, and S. A. Zekavat, “Merging multi-carrier OFDM and beam pattern scanning smart antennas: Achieving low PAPR, high performance and high directionality,” proceedings The University of Texas at Austin 2003 WNCG Symp., Oct. 22-24, Austin, TX, 2003.

·   S. A. Zekavat, and P. T. Keong, , “Beam-pattern-scanning dynamic-time block coding,” proceedings The University of Texas at Austin 2003 WNCG Symp., Oct. 22-24, Austin, TX, 2003.

·   A. Pezeshk, and S. A. Zekavat, “Intervendor spectrum sharing in MC-CDMA systems using subcarrier clustering,” proceedings The University of Texas at Austin 2003 WNCG Symp., Oct. 22-24, 2003.

·   S. A. Zekavat, “Mobile Base Station (MBS) wireless with applications in vehicle early warning systems,” proceedings The University of Texas at Austin 2003 WNCG Symposium, Oct. 22-24, 2003, Austin, TX