Research Interests
My Ph.D. research is focused on indoor acoustic channel characterization using acoustical image method, and use the indoor channel information in estimating a source location. In a recent publication on “Distributed Sensing for Acoustic Source Localization in Indoor Reverberant Environments” that I co-authored, where Jetz’s and triangulation methods were utilized in estimating a source location using room impulse response received at distributed acoustic sensors.
- Indoor Acoustic Channel Modeling and Source Localization
- Spatial-Temporal Signal Processing
- Wireless Spectrum Sensing and Sharing
- Cognitive Radio and MIMO
Education
- PhD in Electrical and Computer Engineering, University of Massachusetts Lowell – Present
- Thesis: Acoustic Channel Modeling and Source Localization in Indoor Environments
- Research focused on indoor acoustic channel characterization using an acoustical image method, and use the indoor channel information in estimating a source location.
- Statistically analyze the computationally derived channel impulse responses, and capture their space and temporal features by a stochastic model.
- For the Source Localization problem, extract spatial and temporal features of impulse responses in reverberant channels to mitigate the effect of false identification of image sources.
- MS in Electrical and Computer Engineering, University of Massachusetts Lowell – 2014
- Thesis: A Sensing and Transmission Model for Spectrum Sharing
- Research focused on wireless spectrum sensing and sharing model using Markov chain for licensed primary and opportunistic secondary users
- Spectrum sensing experiments in indoor wireless channels using state-of-art commercial software-defined radio transceivers
- BS in Electrical and Computer Engineering, University of Massachusetts Lowell – 2010
- Member of Eta Kappa Nu (Electrical Engineering Honor Society)
- Member of Tau Beta Pi (Engineering Honor Society)
Selected Awards and Honors
- NSF GK-12 Fellowship (2011-2013)
- At Center for Advanced Computation and Telecommunications, University of Massachusetts Lowell
- This fellowship offered by the National Science Foundation to help graduate students develop their communication skills to present technical concepts to diverse audience.
- Brought research methods, tools and findings into high school classrooms.
- Best Graduate Student Poster Award (2012)
- At American Society of Engineering Education – North East Section Conference. University of Massachusetts Lowell
- Title: MATLAB Computing and Modeling: Analysis of Weather Data
- Led a project with a Lawrence high school teacher (Mr. MacDonald) in crafting a Weather Model using collected weather data and processed through MATLAB software to give high school students hands-on research experience.
Selected Publications
- Gandhi,Pratik; Joasil,Arielle; Obi,Chester; Bertolino,Angela; Chandra,Kavitha; Thompson,Charles. “Distributed Sensing for Acoustic Source Localization in Reverberant Environments” Proceedings of Meetings on Acoustics, 36-1, 2019.
- Abstract: The acoustic source localization problem relies on estimating the difference in time-delays of a signal received between multiple acoustic sensors separated by a fixed distance. Read the complete abstract for Distributed Sensing for Acoustic Source Localization in Reverberant Environments on the Acoustical Society of America website.
- Abstract: The acoustic source localization problem relies on estimating the difference in time-delays of a signal received between multiple acoustic sensors separated by a fixed distance. Read the complete abstract for Distributed Sensing for Acoustic Source Localization in Reverberant Environments on the Acoustical Society of America website.
- Gandhi, Pratik, Ibrahim Alshawabkeh, Kavitha Chandra, and Charles Thompson. “A Spectrum Sensing and Transmission Model for Secondary Users in Cognitive Radios” International Conference on Software, Telecommunications and Computer Networks, 11-13 September 2012. Split Croatia: 2012.
- Abstract: An analysis of spectrum sensing and transmission of a secondary user sharing a channel with a licensed primary user is presented. Read the complete abstract for A Spectrum Sensing and Transmission Model for Secondary Users in Cognitive Radios on the Institute of Electrical and Electronic Engineering (IEEE) website.
- Abstract: An analysis of spectrum sensing and transmission of a secondary user sharing a channel with a licensed primary user is presented. Read the complete abstract for A Spectrum Sensing and Transmission Model for Secondary Users in Cognitive Radios on the Institute of Electrical and Electronic Engineering (IEEE) website.
- Misiunas, Nicholas, Pratik Gandhi, Raji Remany, Kavitha Chandra, and Charles Thompson. “Wideband Spectrum Sensing Experiments in Indoor Wireless Channels” ITC 2011 – 23rd International Teletraffic Congress, July 2011. San Francisco CA: 2011. pp.318-319.
- Abstract: In this work, spectrum sensing experiments are conducted in indoor wireless channels using state-of-the-art commercial software radio transceivers. Read the complete abstract for Wideband spectrum sensing experiments in indoor wireless channel on the IEEE website.
Selected Presentations
- Bertolino,Angela and Gandhi,Pratik and Joasil,Arielle and Obi,Chester and Chandra,Kavitha and Thompson,Charles. “Distributed Sensing for Acoustic Source Localization in Reverberant Environments” Acoustic Society of America, May 2019, Louisville KY. pp 1733.
- Gandhi, Pratik, Steven MacDonald, Kavitha Chandra, and Charles Thompson. “MATLAB Computing and Modeling: Analysis of Weather Data” American Society of Engineering Education – Northeast Section, April 2012. Lowell MA: 2012. pp. 33.
- Gandhi, Pratik, Kavitha Chandra, and Charles Thompson. “Spectrum Sensing for Cognitive Radio” NSF GK-12 Annual Meeting, March 2012. Washington DC: 2012. pp. 30.
- Gandhi, Pratik, Nicholas Misiunas, Raji Remany, Kavitha Chandra, and Charles Thompson. “Wideband Spectrum Sensing Experiments in Indoor Wireless Channels” James E. West Symposium. October 2011. Baltimore MD: 2012.
Projects
- Configured Pentek 7741 Transceivers: Software-defined radios platform
- Bit Error Rate for a BPSK signal using MATLAB: Using the given SNR, add the noise to the bits, and use them to plot a waterfall curve
- Capstone Project: Somatron Sensory Beanbag Chair: Created a vibroacoustic chair for a rehabilitation center, which is controlled by a music player
- Analyzed Airport Surface Detection Equipment – Model X: Group project in a Radar class
Work
- Electrical Engineer / Pathways Intern (2013-Present)
- At Air Navigation and Surveillance Division, John A. Volpe National Transportation Systems Center OST-R/ USDOT, Cambridge, Massachusetts
- Positioning, Navigation and Timing (PNT) Technology Readiness for Safe Automated Vehicles (AV) Application (AVPNT)
- GPS Adjacent Band Compatibility Assessment
- Airport Surface Surveillance Capability (ASSC) Assessment
- Volpe 1030-1090 MHz Simulator Modification
- Electromagnetic Interference Analysis for Massport
- Research Engineer (2018)
- At Center for Advanced Computation and Telecommunications, University of Massachusetts Lowell The project includes coming up with Command & Control Display Equipment (CCDE) Requirements Specification for Force Protection/Integrated Base Defense Security System (IBDSS) Program Office (AFLCMC/HBU)
- At Center for Advanced Computation and Telecommunications, University of Massachusetts Lowell The project includes coming up with Command & Control Display Equipment (CCDE) Requirements Specification for Force Protection/Integrated Base Defense Security System (IBDSS) Program Office (AFLCMC/HBU)
- Hardware Engineering Intern (2011)
- At Mayflower Communications Company, Inc. Burlington, Massachusetts Performed functional tests on ASICs to be used to build GPS receivers for research and development.
- At Mayflower Communications Company, Inc. Burlington, Massachusetts Performed functional tests on ASICs to be used to build GPS receivers for research and development.
- Research Assistant (2010-2011)
- At Center for Advanced Computation and Telecommunications, University of Massachusetts Lowell
- Used MATLAB to design Wiener filter and observed its effect by using a waterfall curve
- Implemented Multiple Signal Classification (MUSIC) algorithm in MATLAB from theoretical calculation
- Used Vector Network Analyzer to perform indoor channel measurements and finding transfer functions