David Akopian

Orcid: 0000-0001-5977-9969

Affiliations:
  • University of Texas at San Antonio, Department of Electrical and Computer Engineering, TX, USA


According to our database1, David Akopian authored at least 115 papers between 1995 and 2024.

Collaborative distances:
  • Dijkstra number2 of four.
  • Erdős number3 of four.

Timeline

Legend:

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Bibliography

2024
Assessing Performance of Cloud-Based Heterogeneous Chatbot Systems and A Case Study.
IEEE Access, 2024

2023
Kernel-level Rootkit Detection, Prevention and Behavior Profiling: A Taxonomy and Survey.
CoRR, 2023

A Comparative Assessment of Unsupervised Keyword Extraction Tools.
IEEE Access, 2023

Detection and Mitigation of Spoofing Attacks Against Time Synchronization and Positioning.
IEEE Access, 2023

San Antonio Research Partnership Portal: Evaluating keyword extraction tools to automate matchmaking for community research partnership.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2023

An RF modulation recognition method using machine learning.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2023

Data-driven approach for robust flood prediction.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2023

2022
On the Performance of Cloud-Based mHealth Applications: A Methodology on Measuring Service Response Time and a Case Study.
IEEE Access, 2022

Quantifying Performance Gains of GPUDirect Storage.
Proceedings of the IEEE International Conference on Networking, Architecture and Storage, 2022

Community research partnership: A case study of San Antonio Research Partnership Portal.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2022

Chatbot integration with Google Dialogflow environment for conversational intervention.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2022

A robust indoor localization approach exploiting multipath.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2022

Chatbot integrated with machine learning deployed in the cloud and performance evaluation.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2022

2021
Firmware Vulnerability Analysis of Widely Used Low-Budget TP-Link Routers.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2021

Characteristic Features of the Kernel-level Rootkit for Learning-based Detection Model Training.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2021

Integration of NLP and Speech-to-text Applications with Chatbots.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2021

2020
A GPS Spoofing Detection and Classification Correlator-Based Technique Using the LASSO.
IEEE Trans. Aerosp. Electron. Syst., 2020

Toward UAV Control via Cellular Networks: Delay Profiles, Delay Modeling, and a Case Study Within the 5-mile Range.
IEEE Trans. Aerosp. Electron. Syst., 2020

Facilitating the development of cross-platform mHealth applications for chronic supportive care and a case study.
J. Biomed. Informatics, 2020

Tuning-Free, Low Memory Robust Estimator to Mitigate GPS Spoofing Attacks.
IEEE Control. Syst. Lett., 2020

High-Resolution Correlator Based Detection of GPS Spoofing Attacks Using the LASSO.
Proceedings of the IEEE/ION Position, Location and Navigation Symposium, 2020

Performance Assessment of mHealth Apps.
Proceedings of the 2020 IEEE International Conference on Pervasive Computing and Communications Workshops, 2020

Performance analysis of Mobile Cloud Computing Architectures for mHealth app.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2020

2019
Software-Defined Radio GNSS Instrumentation for Spoofing Mitigation: A Review and a Case Study.
IEEE Trans. Instrum. Meas., 2019

A Low-Cost Approach of Magnetic Field-Based Location Validation for Global Navigation Satellite Systems.
IEEE Trans. Instrum. Meas., 2019

A Fast-rate WLAN Measurement Tool for Improved Miss-rate in Indoor Navigation.
CoRR, 2019

Fast prototyping of an SDR WLAN 802.11b receiver for an indoor positioning system.
CoRR, 2019

Exploiting Acceleration Features of LabVIEW platform for Real-Time GNSS Software Receiver Optimization.
CoRR, 2019

Development of a Real-Time Software-Defined Radio GPS Receiver Exploiting a LabVIEW-based Instrumentation Environment.
CoRR, 2019

SDR-Fi: Deep-Learning-Based Indoor Positioning via Software-Defined Radio.
IEEE Access, 2019

2018
A Performance Study of a Fast-Rate WLAN Fingerprint Measurement Collection Method.
IEEE Trans. Instrum. Meas., 2018

Development of a Real-Time Software-Defined GPS Receiver in a LabVIEW-Based Instrumentation Environment.
IEEE Trans. Instrum. Meas., 2018

Real-Time Rejection and Mitigation of Time Synchronization Attacks on the Global Positioning System.
IEEE Trans. Ind. Electron., 2018

A reduced complexity cross-correlation interference mitigation technique on a real-time software-defined radio GPS L1 receiver.
Proceedings of the IEEE/ION Position, Location and Navigation Symposium, 2018

Evaluation of the detection and mitigation of time synchronization attacks on the global positioning system.
Proceedings of the IEEE/ION Position, Location and Navigation Symposium, 2018

Review of Interactive Communication Systems for Business-to-Business (B2B) Services.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, Algorithms, and Applications 2018, Burlingame, CA, USA, January 28, 2018

An Integration of Health Tracking Sensor Applications and eLearning Environments for Cloud-Based Health Promotion Campaigns.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, Algorithms, and Applications 2018, Burlingame, CA, USA, January 28, 2018

Designing Apps Interoperable and Functional on Multiple Mobile Platforms using Google Environment.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, Algorithms, and Applications 2018, Burlingame, CA, USA, January 28, 2018

2017
Structured Group Sparsity: A Novel Indoor WLAN Localization, Outlier Detection, and Radio Map Interpolation Scheme.
IEEE Trans. Veh. Technol., 2017

A Joint Indoor WLAN Localization and Outlier Detection Scheme Using LASSO and Elastic-Net Optimization Techniques.
IEEE Trans. Mob. Comput., 2017

Modern WLAN Fingerprinting Indoor Positioning Methods and Deployment Challenges.
IEEE Commun. Surv. Tutorials, 2017

Two-Tier State-Machine Programming for Messaging Applications.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, Algorithms, and Applications 2017, Burlingame, CA, USA, January 29, 2017

A study of IoT MQTT control packet behavior and its effect on communication delays.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, Algorithms, and Applications 2017, Burlingame, CA, USA, January 29, 2017

Introduction to WLAN-Based Indoor Positioning of Mobile Devices.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, Algorithms, and Applications 2017, Burlingame, CA, USA, January 29, 2017

2016
Indoor WLAN localization using group sparsity optimization technique.
Proceedings of the IEEE/ION Position, Location and Navigation Symposium, 2016

Range-based trilateration using multipurpose cost function optimization with Lagrangian multipliers.
Proceedings of the IEEE/ION Position, Location and Navigation Symposium, 2016

2015
Network delay modeling for assisted GPS.
IEEE Trans. Aerosp. Electron. Syst., 2015

A Closed-Loop Transmission Power Control System Using a Nonlinear Approximation of Power-Time Curve.
IEEE Syst. J., 2015

Cognitive interference avoidance in 4<sup>th</sup> generation GPS.
Proceedings of the 10th System of Systems Engineering Conference, SoSE 2015, 2015

Indoor positioning system using WLAN channel estimates as fingerprints for mobile devices.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2015

Platform-dependent optimization considerations for mHealth applications.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2015

A sensor data format incorporating battery charge information for smartphone-based mHealth applications.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2015

A privacy protection for an mHealth messaging system.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2015

2014
A Development and Testing Instrumentation for GPS Software Defined Radio With Fast FPGA Prototyping Support.
IEEE Trans. Instrum. Meas., 2014

Measurement and Characterization of Channel Delays for Broadband Power Line Communications.
IEEE Trans. Instrum. Meas., 2014

Measurement and Modeling of Network Delays for MS-Based A-GPS Assistance Delivery.
IEEE Trans. Instrum. Meas., 2014

Facilitating Remote Laboratory Deployments Using a Relay Gateway Server Architecture.
IEEE Trans. Ind. Electron., 2014

An Assessment of Remote Laboratory Experiments in Radio Communication.
IEEE Trans. Educ., 2014

Closed Loop Power Control Using Third Order Quadratic Approximator.
Int. J. Wirel. Inf. Networks, 2014

Thermal conditions of breast cancer progress-treatment.
Proceedings of the 2014 IEEE International Conference on Systems, Man, and Cybernetics, 2014

Thermal-image quality measurements.
Proceedings of the IEEE International Conference on Acoustics, 2014

Indoor positioning system using WLAN multipath signals as fingerprints for mobile devices.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2014

Dealing with faulty measurements in WLAN indoor positioning.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2014

Human activity recognition by smartphones regardless of device orientation.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2014

A remote laboratory for USRP-based software defined radio.
Proceedings of the Mobile Devices and Multimedia: Enabling Technologies, 2014

2013
Fast Time-Recursive Block Correlators for Pseudorandom Sequences.
IEEE Trans. Circuits Syst. I Regul. Pap., 2013

A Template-Based Short Course Concept on Android Application Development.
J. Inf. Technol. Educ. Innov. Pract., 2013

An adaptive stochastic-based M-ary Modulation extension algorithm for short range wireless CRs.
Proceedings of the 2013 Wireless Telecommunications Symposium, 2013

A novel BER-feedback power control algorithm for Personal Area Network Devices.
Proceedings of the IEEE International Systems Conference, 2013

A LabVIEW-based fast prototyping software defined GPS receiver platform.
Proceedings of the IEEE Global Conference on Signal and Information Processing, 2013

Human movement activity classification approaches that use wearable sensors and mobile devices.
Proceedings of the Multimedia Content and Mobile Devices 2013, 2013

MessageSpace: a messaging system for health research.
Proceedings of the Multimedia Content and Mobile Devices 2013, 2013

2012
Guest Editors' Introduction to the Special Issue on The design and analysis of wireless systems: New inspirations.
Comput. Electr. Eng., 2012

Reduced complexity crosscorrelation interference mitigation in GPS-enabled collaborative ad-hoc wireless networks - Theory.
Comput. Electr. Eng., 2012

SUPL support for mobile devices.
Proceedings of the Multimedia on Mobile Devices 2012; and Multimedia Content Access: Algorithms and Systems VI, 2012

Template-based education toolkit for mobile platforms.
Proceedings of the Multimedia on Mobile Devices 2012; and Multimedia Content Access: Algorithms and Systems VI, 2012

2011
Temporal-spatial fuzzy logic algorithm for effective dynamic load balancing in distributed 3D graphics engine.
Int. J. Syst. Syst. Eng., 2011

Integrity monitoring and thresholding-based WLAN indoor positioning algorithm for mobile devices.
Proceedings of the 6th International Conference on System of Systems Engineering, 2011

Mobile text messaging solutions for obesity prevention.
Proceedings of the Multimedia on Mobile Devices 2011; and Multimedia Content Access: Algorithms and Systems V, 2011

Wi-Fi assistance to SUPL-based Assisted-GPS simulators for indoor positioning.
Proceedings of the 2011 IEEE Consumer Communications and Networking Conference, 2011

2010
Design Method for Scalable DCT Algorithm Suitable for Reconfigurable Systems.
Proceedings of the 2010 International Conference on Embedded Systems & Applications, 2010

2009
A Fast Positioning Method Without Navigation Data Decoding for Assisted GPS Receivers.
IEEE Trans. Veh. Technol., 2009

Flexible Spectrum and Power Allocation for OFDM Unlicensed Wireless Systems.
IEEE Syst. J., 2009

Scalable FFT Architecture vs. Multiple Pipeline FFT Architectures Hardware Implementation and Cost.
Proceedings of the IEEE International Conference on Systems, 2009

A Sensor Placement Measure for Impact Detection in Structural Health Monitoring.
Proceedings of the IEEE International Conference on Systems, 2009

A Remote Over-Internet Hands-on Laboratory.
Proceedings of the IEEE International Conference on Systems, 2009

A Land Mobile Channel Modeling in LabVIEW.
Proceedings of the IEEE International Conference on Systems, 2009

2008
Reduced Complexity Algorithm for Spreading Sequence Design.
IEEE Trans. Circuits Syst. II Express Briefs, 2008

A Wavelet-Denoising Approach Using Polynomial Threshold Operators.
IEEE Signal Process. Lett., 2008

A Fast Time-Recursive Correlator for DSSS Communications.
IEEE Signal Process. Lett., 2008

On Optimal Bit Allocation for Classification-Based Source-Dependent Transform Coding.
J. Electr. Comput. Eng., 2008

A family of scalable FFT architectures and an implementation of 1024-point radix-2 FFT for real-time communications.
Proceedings of the 26th International Conference on Computer Design, 2008

2007
A Software GPS+Receiver Toolkit.
Proceedings of the 2nd IEEE International Conference on System of Systems Engineering, 2007

Enhancing Security in Wireless Networks Using Positioning Techniques.
Proceedings of the 2nd IEEE International Conference on System of Systems Engineering, 2007

Spreading Sequence Design for MC-CDMA Systems.
Proceedings of the 2nd IEEE International Conference on System of Systems Engineering, 2007

Optimization of Time-Varying Two-Band Filterbanks for Wavelet Transforms.
Proceedings of the 2nd IEEE International Conference on System of Systems Engineering, 2007

2005
An optimal nonlinear extension of linear filters based on distributed arithmetic.
IEEE Trans. Image Process., 2005

2003
Multistage interconnection networks for parallel Viterbi decoders.
IEEE Trans. Commun., 2003

2001
Pipeline architecture for DCT/IDCT.
Proceedings of the 2001 International Symposium on Circuits and Systems, 2001

Register-based multi-port perfect shuffle networks.
Proceedings of the 2001 International Symposium on Circuits and Systems, 2001

Multi-port interconnection networks for radix-R algorithms.
Proceedings of the IEEE International Conference on Acoustics, 2001

2000
Constant geometry algorithm for discrete cosine transform.
IEEE Trans. Signal Process., 2000

Scalable interconnection networks for partial column array processor architectures.
Proceedings of the IEEE International Symposium on Circuits and Systems, 2000

Pipeline architecture for 8×8 discrete cosine transform.
Proceedings of the IEEE International Conference on Acoustics, 2000

Pipelined architecture for inverse discrete cosine transform.
Proceedings of the 10th European Signal Processing Conference, 2000

Lossless compression of natural images using regressive analysis.
Proceedings of the 10th European Signal Processing Conference, 2000

1999
Architecture-oriented regular algorithms for discrete sine and cosine transforms.
IEEE Trans. Signal Process., 1999

An optimized multiscanning approach for still image compression.
Proceedings of the Third IEEE Workshop on Multimedia Signal Processing, 1999

1997
New digit-serial implementations of stack filters.
Signal Process., 1997

Systematic approaches to parallel architectures for DSP algorithms.
Signal Process., 1997

1996
Fault detection in stack filter circuits based on sample selection probabilities.
Proceedings of the Proceedings 1996 International Conference on Image Processing, 1996

Pipeline processor for fast architecture oriented regular DCT-IDCT algorithm.
Proceedings of the 1996 IEEE International Conference on Acoustics, 1996

Processor architecture for extended lapped transform.
Proceedings of the 8th European Signal Processing Conference, 1996

1995
Processors for generalized stack filters.
IEEE Trans. Signal Process., 1995

Fibonacci P-Code Method for Generalized Stack Filtering.
Proceedings of the 1995 IEEE International Symposium on Circuits and Systems, ISCAS 1995, Seattle, Washington, USA, April 30, 1995


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