Engineering Computer

Ali Khalajmehrabadi September *, **** Last update on April 16, 2017

ali.https:khalajmehrabadi@//www.linkedin.utsa.com/edu in/ali-khalajmehrabadi- +1.210-663-ab60a145 0444 ali.khalajmehrabadi (Skype) Biotechnology Sciences and Engineering (BSE) Building Room 0.236 The University of Texas at San Antonio 1 UTSA Circle San Antonio TX 78249 USA Summary

I am a Ph.D. candidate in the Department of Electri- cal and Computer Engineering, the University of Texas at San Antonio (UTSA), and expect to graduate in May, 2017. My career interests include Global Navigation Satellite System (GNSS), Collaborative Localization, In- door Localization and Navigation Systems, and Wire- less Communication Systems. My technical expertise include Wireless Communication Systems, 4G/5G LTE

Communications Systems, Engineering Optimization,

Spread SpectrumCommunications andGPS, Signal Pro-

cessing, Spatial Statistics, SDR Development, Estima- tion Theory and Kalman Filtering, Sensor Fusion, and Android Application Development.

Education

University of Texas at San Antonio (UTSA) San Antonio, USA Ph.D. in Electrical Engineering 2014 - Present (Expected Graduation Date: May, 2017) Research Topic: Localization and Navigation Systems Main subjects: Global Positioning and Navigation System Security, Collaborative Multi-agent Local- ization and Tracking, and Indoor Localization and Navigation Systems. Dissertation: “Optimization Techniques for Robust Positioning, Timing, and Security ”. GPA: 3.88/4

University Technology Malaysia (UTM) Johor, Malaysia M.Sc. in Electrical-Electronics and Tele-Communications 2010 – 2012 Research Topic: Compressed Spectrum Sensing Scheme for Wideband Cognitive Radio Networks; Design and Analysis of Wideband Circularly Polarized Dielectric Resonator Antenna for Wireless Communication Applications

Main subjects: Spectrum Sensing and Sharing in Cognitive Radio Networks, Signal Processing for Wireless Communications, Dielectric Resonator Antenna Design. Thesis: “Design and Analysis of Wideband Circularly Polarized Dielectric Resonator Antenna for Wireless Communication Applications ”.

GPA: 3.98/4

University of Mazandaran (Babol Noshirvani University of Technology) Mazandaran, Iran B.Sc. in Electrical and Computer Engineering 2005 – 2010 Research Topic: Signal Processing

Main subjects: Programming, Operational Research, Signal Processing. Project: “New E cient Fractal Based Compression Method for Electrocardiogram Signals”. Experience

Research Fellow at SCNS & USL Laboratories, UTSA San Antonio, USA Developed a SDR for GNSS Receiver with Spoofing Detection Capability September ’16 – Present AGPS receiver is augmented with a spoofing detection block to robustify the receiver against malicious attacks. This is developed on Python, MATLAB, C++ and Android platforms. Developed an Application for RawGNSS Measurements fromAndroid DevicesSeptember ’16 – Present The recent release of the GNSS package for Android devices provides access to the raw GNSS measure- ments. An Android application has been developed to obtain the real GPS measurements. DevelopedMulti-Agent Collaborative Localization and Tracking Algorithms in GPS-denied Environ- ments January ’15 –

Present

The technique develops a beacon-free collaborative localization of multiple flying agents with pairwise range measurements. A unified set of distributive and non-distributive LS techniques are applied over Intuitive Coarse Localization (ICL), Multidimensional Scaling (MDS) and Semidefinite Programming

(SDP) schemes. The technique provides navigation of agents where trajectory prediction techniques such as Kalman filtering are not applicable.

Designed an Android Application for Indoor Localization and Navigation June ’15 – Present An Android application is being developed which provides a User Interface (UI) with the map of envi- ronment. The application receives the RSSI data fromWLAN APs and sends it to a computing source to perform localization. The user’s location is shown on the map of environment. The application calculates the shortest distance to the destination and navigates the user through the building. Developed Indoor WLAN Localization and Navigation Algorithms based on Robust Optimization Techniques January ’14 – December ’16

The scheme collects Wi-Fi Fingerprinting through a self-developed Android application and performs machine learning, pattern recognition, estimation, and robust optimization techniques for localization. For navigation, the data from accelerometer, gyroscope, magnetometer are incorporated through Kalman tracking and performs Wi-Fi SLAM. The algorithms have been developed on MATLAB, Android, Python, and Java environments.

Implemented Real-time DSP for Wireless Communication System August ’15 – December ’15 Signal processing applications of real-time DSP and the associated programming issues for wireless communication system design using DSP algorithms on ARM Cortex M Series. Developed a SDR for Relay Communication Systems August ’16 – December’16 A SDR has been developed which performs time synchronization and frequency o set compensation to the received OFDM signals and relays the signals through VITA-49 protocol. The algorithm has been developed on MATLAB and Python platforms.

Designed a MIMO-OFDMCommunication System for LTE signals August ’16 – December’16 AMIMO-OFDM communication system has been developed through Alamouti space-time coding on MATLAB platform.

Research Fellow at MIMOs & Advanced Microwave & Antenna Laboratory, UTM Johor, Malaysia Developed an Algorithm for Compressive Sensing in Cognitive Radio Networks Jan.’11 – May ’12 Di erent Compressive Sensing Algorithms have been studied and a simple method based on fractals have been proposed to perform spectrum sensing for cognitive radios. Developed and Fabricated Circularly Polarized Dielectric Resonator Antennas Jan.’11 – May ’12 A novel circularly polarized antenna has been designed and simulated with CST and Ansoft HFSS. The antenna was fabricated and the linear and circular bandwidths were measured. Please refer to my Linked-in profile for a more complete list of work experiences along with recommendations. Skills

Technical expertise: Indoor Localization and Navigation Systems, Multi-agent Collaborative Localization, Global Positioning and Navigation Systems, Wireless Communication Systems, 4G/5G LTE Communica- tions Systems, Engineering Optimization, Spread Spectrum Communications and GPS, Signal Processing, Spatial Statistics, SDR Development, Estimation Theory and Kalman Filtering, Wi-Fi-SLAM, and Android Application Development.

Programming languages: C++ /C/ Python/ MATLAB/ Android / R / Java Natural languages: Farsi (mother tongue), English (full professional proficiency). Patent

Systems and Methods for Network Localization US provisional patent 62/408,665 – Oct., 14, 2016. Publications

Journals

1- A. Khalajmehrabadi; N. Gatsis; A. Taha; and D. Akopian; “GPS Spoofing Detection and Mitigation through Clock Bias and Peak Tracking ”, in preparation. 2- A. Khalajmehrabadi; D. Akopian; N. Gatsis; D. Pack, “Beacon-free Multi-Agent Collaborative Navigation in GPS-Denied Environments ”, in preparation.

3- A. Khalajmehrabadi; N. Gatsis; D. Akopian; A. Taha, “Identifiability Analysis and Sparse Detection of GPS Spoofing Attacks on Phasor Measurement Units ”, Ready for Submission. 4- A. Khalajmehrabadi; N. Gatsis; D. Pack; D. Akopian, “HybridLeast Squares for Collaborative Localization: Comparative Analysis and Integrated Outlier Rejection”, Submitted to IEEE Transactions on Aerospace and Electronic Systems, January 2017 (Under Review).

5- A. Khalajmehrabadi; N. Gatsis; D. Pack; D. Akopian,“A Joint Indoor WLAN Localization and Outlier Detection Scheme Using LASSO and Elastic-Net Optimization Techniques”, in IEEE Transactions on Mobile Computing, vol.PP, no.99, pp.1-1.

6- A. Khalajmehrabadi; N. Gatsis; D. Akopian, “Structured Group Sparsity: A Novel Indoor WLAN Lo- calization, Outlier Detection, and Radio Map Interpolation Scheme”, in IEEE Transactions on Vehicular Technology, vol.PP, no.99, pp.1-1.

7- A. Khalajmehrabadi; N. Gatsis; D. Akopian, “ModernWLAN Fingerprinting Indoor Positioning Methods and Deployment Challenges”, IEEE Communications Surveys and Tutorials, January, 2017 (Accepted). Conferences

1- A. Khalajmehrabadi; N. Gatsis; D. Akopian, “Indoor WLAN localization using group sparsity optimiza- tion technique ”, Proceedings of the IEEE/ION Position, Location and Navigation Symposium (PLANS), Savannah, GA, 2016, pp. 584-588.

2- A. Khalajmehrabadi; D. Akopian andD. Pack, “Range-based trilateration usingmultipurpose cost function optimization with Lagrangian multipliers ”, Proceedings of the IEEE/ION Position, Location and Navigation Symposium (PLANS), Savannah, GA, 2016, pp. 118-121. 3- D. Akopian; A. Khalajmehrabadi, and N. Gatsis, “Introduction to WLAN-fingerprinting based indoor localization ”, to appear in Mobile Devices and Multimedia: Enabling Technologies, Algorithms, and Applications, IS&T Electronic Imaging 2017 Symposium.

4- A. Khalajmehrabadi, M. K. A. Rahim, N. A. Murad and M. R. Kamarudin, “Square circular polarized dielectric resonator antenna with a rotated notch ”, Proceedings of the 6th European Conference on Antennas and Propagation (EUCAP), Prague, 2012, pp. 2819-2822. 5- A. Khalajmehrabadi, M. K. A. Rahim and M. Khalily, “Dual band double stacked dielectric resonator antenna with a P-Shape parasitic strip for circular polarization ”, Proceedings of the IEEE International RF and Microwave Conference (RFM), Seremban, Negeri Sembilan, 2011, pp. 444-447. 6- M. Khalily, M. K. A. Rahim, A. Khalajmehrabadi and M. R. Kamarudin, “A compact circularly polarized and wideband Rectangular Dielectric Resonator Antenna ”, Proceedings of the IEEE International RF and Microwave Conference (RFM), Seremban, Negeri Sembilan, 2011, pp. 448-451. 7- A. Khalaj and H. M. Naimi, “New e cient fractal based compression method for electrocardiogram signals ”, Proceedings of the IEEE Canadian Conference on Electrical and Computer Engineering, St. John’s, NL, 2009, pp. 983-986.

Projects

Indoor Localization and Navigation

Global Navigation and Satellite Systems (GNSS)

Collaborative Localization

Wireless Communication Systems (4G/5G LTE, MIMO, OFDM, OFDMA)

Machine Learning, Pattern Recognition

Signal Processing

Android Application Development

Certifications

Raw GNSS Measurements from Android Phones Portland, Oregon Google Android Location Team in ION GNSS+ Symposium 2016 September ’16 Academic Grant Writing San Antonio, Texas

UTSA Graduate School Summer ’16

Honors, Awards, and Activities

Institute of Navigation (ION) Savannah, Georgia

Indoor Positioning and Navigation Session Chair April ’16 2016 IEEE/ION Position, Location and Navigation Symposium (PLANS) UTSA San Antonio, Texas

Who’s Who Award March ’17

Who’s Who Among Students in American Universities and Colleges Grant Writing Participation (literature review, one research thrust, research validation)November, 2016 Submitted to National Science Foundation

Reviewer of IEEE SMC & IEEE Systems Journals April ’15 – Present Proof of Concept (POF) Patent Fellowship September ’16–August ’17 O ce of Innovation and Commercialization

Travel Award April ’16

Graduate School

Valero PhD Competitive Research Scholarship Award January ’15 – December ’15 College of Engineering

Valero Competitive Research Scholar Fellowship January ’14 – December ’15 College of Engineering

Graduate Fellowship January ’14 – Present

UTSA Department of Electrical and Computer Engineering Vice-President of Iranian Student Association (ISA) April ’15 – August ’16 Iranian Student Association at UTSA

UTM Johor, Malaysia

Best Graduate Student Award August ’12

Faculty of Electrical Engineering UTM

Tutorials, Presentations, Workshops

Tutorial Portland, Oregon

Raw GNSS Measurements fromAndroid Phones September ’16 Google Location Team Tutorial in ION GNSS+ Pre-conference Tutorials Presentations Savannah, Georgia

Indoor WLAN localization using group sparsity optimization technique April ’16 2016 IEEE/ION Position, Location and Navigation Symposium (PLANS) Range-based trilateration usingmultipurpose cost function optimizationwith Lagrangianmultipliers April ’16

2016 IEEE/ION Position, Location and Navigation Symposium (PLANS) Workshop San Antonio, Texas

Optimized Coding and Parallel Computing with MATLAB August ’15 April 16, 2017

Ali Khalajmehrabadi

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