David Akopian

ORCID

Publication Activity (10 Years)

Years Active: 1995-2024
Publications (10 Years): 63

Top Venues

MOBMU

CoRR

IEEE Trans. Instrum. Meas.

PLANS

Publications

Ganesh Reddy Gunnam, Devasena Inupakutika, Rahul Mundlamuri, Sahak Kaghyan, David Akopian
Assessing Performance of Cloud-Based Heterogeneous Chatbot Systems and A Case Study. IEEE Access 12 (2024)
Ganesh Reddy Gunnam, Devasena Inupakutika, Rahul Mundlamuri, Sahak Kaghyan, David Akopian
Data-driven approach for robust flood prediction. MOBMU (2023)
Mohammad Nadim, Wonjun Lee, David Akopian
Kernel-level Rootkit Detection, Prevention and Behavior Profiling: A Taxonomy and Survey. CoRR (2023)
Junhwan Lee, Erick Schmidt, Nikolaos Gatsis, David Akopian
Detection and Mitigation of Spoofing Attacks Against Time Synchronization and Positioning. IEEE Access 11 (2023)
Mohammad Nadim, David Akopian, Adolfo Matamoros
A Comparative Assessment of Unsupervised Keyword Extraction Tools. IEEE Access 11 (2023)
Rahul Mundlamuri, Devasena Inupakutika, Ganesh Reddy Gunnam, Thinh Ngo, David Akopian
An RF modulation recognition method using machine learning. MOBMU (2023)
Mohammad Nadim, David Akopian, Adolfo Matamoros
San Antonio Research Partnership Portal: Evaluating keyword extraction tools to automate matchmaking for community research partnership. MOBMU (2023)
Devasena Inupakutika, Bridget Davis, Qirui Yang, Daniel Kim, David Akopian
Quantifying Performance Gains of GPUDirect Storage. NAS (2022)
Devasena Inupakutika, Gerson Rodriguez, David Akopian, Palden Lama, Patricia Chalela, Amelie G. Ramirez
On the Performance of Cloud-Based mHealth Applications: A Methodology on Measuring Service Response Time and a Case Study. IEEE Access 10 (2022)
Ganesh Reddy Gunnam, Devasena Inupakutika, Rahul Mundlamuri, Sahak Kaghyan, David Akopian
Chatbot integrated with machine learning deployed in the cloud and performance evaluation. MOBMU (2022)
Rahul Mundlamuri, Devasena Inupakutika, Ganesh Reddy Gunnam, Sahak Kaghyan, David Akopian
Chatbot integration with Google Dialogflow environment for conversational intervention. MOBMU (2022)
Rahul Mundlamuri, Devasena Inupakutika, Krishna Sandeep Ayyagari, Ganesh Reddy Gunnam, David Akopian
A robust indoor localization approach exploiting multipath. MOBMU (2022)
Mohammad Nadim, David Akopian, Adolfo Matamoros
Community research partnership: A case study of San Antonio Research Partnership Portal. MOBMU (2022)
Devasena Inupakutika, Mohammad Nadim, Ganesh Reddy Gunnam, Sahak Kaghyan, David Akopian, Patricia Chalela, Amelie G. Ramirez
Integration of NLP and Speech-to-text Applications with Chatbots. MOBMU (2021)
Mohammad Nadim, Wonjun Lee, David Akopian
Characteristic Features of the Kernel-level Rootkit for Learning-based Detection Model Training. MOBMU (2021)
Franziska Schwarz, Klaus Schwarz, Daniel Fuchs, Reiner Creutzburg, David Akopian
Firmware Vulnerability Analysis of Widely Used Low-Budget TP-Link Routers. MOBMU (2021)
Erick Schmidt, Nikolaos Gatsis, David Akopian
A GPS Spoofing Detection and Classification Correlator-Based Technique Using the LASSO. IEEE Trans. Aerosp. Electron. Syst. 56 (6) (2020)
Devasena Inupakutika, Sahak Kaghyan, David Akopian, Patricia Chalela, Amelie G. Ramirez
Facilitating the development of cross-platform mHealth applications for chronic supportive care and a case study. J. Biomed. Informatics 105 (2020)
Devasena Inupakutika, David Akopian, Patricia Chalela, Amelie G. Ramirez
Performance analysis of Mobile Cloud Computing Architectures for mHealth app. MOBMU (2020)
Gerson Rodriguez, Devasena Inupakutika, Sahak Kaghyan, David Akopian, Palden Lama, Patricia Chalela, Amelie G. Ramirez
Performance Assessment of mHealth Apps. PerCom Workshops (2020)
Erick Schmidt, Nikolaos Gatsis, David Akopian
A GPS spoofing detection and classification correlator-based technique using the LASSO. CoRR (2020)
Junhwan Lee, Ahmad F. Taha, Nikolaos Gatsis, David Akopian
Tuning-Free, Low Memory Robust Estimator to Mitigate GPS Spoofing Attacks. IEEE Control. Syst. Lett. 4 (1) (2020)
Erick Schmidt, Nikolaos Gatsis, David Akopian
High-Resolution Correlator Based Detection of GPS Spoofing Attacks Using the LASSO. PLANS (2020)
Jafet Morales, Gerson Rodriguez, Grant Huang, David Akopian
Toward UAV Control via Cellular Networks: Delay Profiles, Delay Modeling, and a Case Study Within the 5-mile Range. IEEE Trans. Aerosp. Electron. Syst. 56 (5) (2020)
Erick Schmidt, David Akopian, Daniel J. Pack
Development of a Real-Time Software-Defined Radio GPS Receiver Exploiting a LabVIEW-based Instrumentation Environment. CoRR (2019)
Erick Schmidt, Zachary Ruble, David Akopian, Daniel J. Pack
Software-Defined Radio GNSS Instrumentation for Spoofing Mitigation: A Review and a Case Study. IEEE Trans. Instrum. Meas. 68 (8) (2019)
Erick Schmidt, David Akopian
Exploiting Acceleration Features of LabVIEW platform for Real-Time GNSS Software Receiver Optimization. CoRR (2019)
Grant Huang, Brian K. Taylor, David Akopian
A Low-Cost Approach of Magnetic Field-Based Location Validation for Global Navigation Satellite Systems. IEEE Trans. Instrum. Meas. 68 (12) (2019)
Erick Schmidt, Zach A. Ruble, David Akopian, Daniel J. Pack
Software-Defined Radio GNSS Instrumentation for Spoofing Mitigation: A Review and a Case Study. CoRR (2019)
Erick Schmidt, David Akopian
A Fast-rate WLAN Measurement Tool for Improved Miss-rate in Indoor Navigation. CoRR (2019)
Erick Schmidt, David Akopian
Indoor positioning system using WLAN channel estimates as fingerprints for mobile devices. CoRR (2019)
Erick Schmidt, Devasena Inupakutika, Rahul Mundlamuri, David Akopian
SDR-Fi: Deep-Learning-Based Indoor Positioning via Software-Defined Radio. IEEE Access 7 (2019)
Erick Schmidt, Misbahuddin A. Mohammed, David Akopian
A Performance Study of a Fast-Rate WLAN Fingerprint Measurement Collection Method. CoRR (2019)
Erick Schmidt, David Akopian
Fast prototyping of an SDR WLAN 802.11b receiver for an indoor positioning system. CoRR (2019)
Erick Schmidt, Zach A. Ruble, David Akopian, Daniel J. Pack
A Reduced Complexity Cross-correlation Interference Mitigation Technique on a Real-time Software-defined Radio GPS L1 Receiver. CoRR (2019)
Junhwan Lee, Ahmad F. Taha, Nikolaos Gatsis, David Akopian
Tuning-Free, Low Memory Robust Estimator to Mitigate GPS Spoofing Attacks. CoRR (2019)
Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian, Ahmad F. Taha
Real-Time Rejection and Mitigation of Time Synchronization Attacks on the Global Positioning System. IEEE Trans. Ind. Electron. 65 (8) (2018)
Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian, Ahmad F. Taha
Real-Time Rejection and Mitigation of Time Synchronization Attacks on the Global Positioning System. CoRR (2018)
Erick Schmidt, David Akopian, Daniel J. Pack
Development of a Real-Time Software-Defined GPS Receiver in a LabVIEW-Based Instrumentation Environment. IEEE Trans. Instrum. Meas. 67 (9) (2018)
Devasena Inupakutika, Chetan Basutkar, Sahak Kaghyan, David Akopian, Patricia Chalela, Amelie G. Ramirez, Alfred Mcalister
Designing Apps Interoperable and Functional on Multiple Mobile Platforms using Google Environment. MOBMU (2018)
Erick Schmidt, Zach A. Ruble, David Akopian, Daniel J. Pack
A reduced complexity cross-correlation interference mitigation technique on a real-time software-defined radio GPS L1 receiver. PLANS (2018)
Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian
Evaluation of the detection and mitigation of time synchronization attacks on the global positioning system. PLANS (2018)
Erick Schmidt, Misbahuddin A. Mohammed, David Akopian
A Performance Study of a Fast-Rate WLAN Fingerprint Measurement Collection Method. IEEE Trans. Instrum. Meas. 67 (10) (2018)
Devasena Inupakutika, Girish Vaidyanathan Natarajan, Sahak Kaghyan, David Akopian, Martin Evans, Zenong Yin, Deborah Parra-Medina
An Integration of Health Tracking Sensor Applications and eLearning Environments for Cloud-Based Health Promotion Campaigns. MOBMU (2018)
Sahak Kaghyan, Shubham Sarpal, Andrei Zorilescu, David Akopian
Review of Interactive Communication Systems for Business-to-Business (B2B) Services. MOBMU (2018)
David Akopian, Ali Khalajmehrabadi, Nikolaos Gatsis
Introduction to WLAN-Based Indoor Positioning of Mobile Devices. MOBMU (2017)
Ali Khalajmehrabadi, Nikolaos Gatsis, Daniel J. Pack, David Akopian
A Joint Indoor WLAN Localization and Outlier Detection Scheme Using LASSO and Elastic-Net Optimization Techniques. IEEE Trans. Mob. Comput. 16 (8) (2017)
Jafet Morales, Rodrigo Escobar, Sahak Kaghyan, Girish Vaidyanathan Natarajan, David Akopian, Patricia Chalela, Amelie G. Ramirez, Alfred Mcalister
Two-Tier State-Machine Programming for Messaging Applications. MOBMU (2017)
Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian
Modern WLAN Fingerprinting Indoor Positioning Methods and Deployment Challenges. IEEE Commun. Surv. Tutorials 19 (3) (2017)
Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian
Structured Group Sparsity: A Novel Indoor WLAN Localization, Outlier Detection, and Radio Map Interpolation Scheme. IEEE Trans. Veh. Technol. 66 (7) (2017)
Brian Bendele, David Akopian
A study of IoT MQTT control packet behavior and its effect on communication delays. MOBMU (2017)
Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian
Modern WLAN Fingerprinting Indoor Positioning Methods and Deployment Challenges. CoRR (2016)
Ali Khalajmehrabadi, Nikolaos Gatsis, Daniel J. Pack, David Akopian
A Joint Indoor WLAN Localization and Outlier Detection Scheme Using LASSO and Elastic-Net Optimization Techniques. CoRR (2016)
Ali Khalajmehrabadi, David Akopian, Daniel J. Pack
Range-based trilateration using multipurpose cost function optimization with Lagrangian multipliers. PLANS (2016)
Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian
Structured Group Sparsity: A Novel Indoor WLAN Localization, Outlier Detection, and Radio Map Interpolation Scheme. CoRR (2016)
Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian
Indoor WLAN localization using group sparsity optimization technique. PLANS (2016)
Grant Huang, David Akopian, C. L. Philip Chen
Network delay modeling for assisted GPS. IEEE Trans. Aerosp. Electron. Syst. 51 (1) (2015)
Erick Schmidt, David Akopian
Indoor positioning system using WLAN channel estimates as fingerprints for mobile devices. MOBMU (2015)
Brian Kelley, Gonzalo De La Torre Parra, David Akopian
generation GPS. SoSE (2015)
Lakshmipathi Aaleswara, David Akopian, Anthony T. Chronopoulos
A privacy protection for an mHealth messaging system. MOBMU (2015)
Andre M. Mayers, Patrick J. Benavidez, G. V. S. Raju, David Akopian, Mo M. Jamshidi
A Closed-Loop Transmission Power Control System Using a Nonlinear Approximation of Power-Time Curve. IEEE Syst. J. 9 (3) (2015)
Rodrigo Escobar, David Akopian, Rajendra V. Boppana
A sensor data format incorporating battery charge information for smartphone-based mHealth applications. MOBMU (2015)
Sahak Kaghyan, David Akopian, Hakob G. Sarukhanyan
Platform-dependent optimization considerations for mHealth applications. MOBMU (2015)
Andreas Gampe, Arsen Melkonyan, Murillo Pontual, David Akopian
An Assessment of Remote Laboratory Experiments in Radio Communication. IEEE Trans. Educ. 57 (1) (2014)
Mehdi Roopaei, Sos S. Agaian, Mehdi Shadaram, David Akopian, Hélio Rios
Thermal conditions of breast cancer progress-treatment. SMC (2014)
Grant Huang, David Akopian, C. L. Philip Chen
Measurement and Characterization of Channel Delays for Broadband Power Line Communications. IEEE Trans. Instrum. Meas. 63 (11) (2014)
Anirban Saha, David Akopian
Indoor positioning system using WLAN multipath signals as fingerprints for mobile devices. MOBMU (2014)
Rudresh Gandhinagar Ekanthappa, Rodrigo Escobar, Achot Matevossian, David Akopian
A remote laboratory for USRP-based software defined radio. MOBMU (2014)
Arsen Melkonyan, Andreas Gampe, Murillo Pontual, Grant Huang, David Akopian
Facilitating Remote Laboratory Deployments Using a Relay Gateway Server Architecture. IEEE Trans. Ind. Electron. 61 (1) (2014)
Andre M. Mayers, Patrick Benavidez, G. V. S. Raju, David Akopian, Mo M. Jamshidi
Closed Loop Power Control Using Third Order Quadratic Approximator. Int. J. Wirel. Inf. Networks 21 (2) (2014)
Jafet Morales, David Akopian, Sos S. Agaian
Dealing with faulty measurements in WLAN indoor positioning. MOBMU (2014)
Jafet Morales, David Akopian, Sos S. Agaian
Human activity recognition by smartphones regardless of device orientation. MOBMU (2014)
Sos S. Agaian, Mehdi Roopaei, David Akopian
Thermal-image quality measurements. ICASSP (2014)
Arpine Soghoyan, Adnan Suleiman, David Akopian
A Development and Testing Instrumentation for GPS Software Defined Radio With Fast FPGA Prototyping Support. IEEE Trans. Instrum. Meas. 63 (8) (2014)
Grant Huang, David Akopian, C. L. Philip Chen
Measurement and Modeling of Network Delays for MS-Based A-GPS Assistance Delivery. IEEE Trans. Instrum. Meas. 63 (8) (2014)
David Akopian, Arsen Melkonyan, Santosh C. Golgani, Timothy T. Yuen, Can Saygin
A Template-Based Short Course Concept on Android Application Development. J. Inf. Technol. Educ. Innov. Pract. 12 (2013)
David Akopian, Arpine Soghoyan
A LabVIEW-based fast prototyping software defined GPS receiver platform. GlobalSIP (2013)
Andre M. Mayers, Patrick Benavidez, G. V. S. Raju, David Akopian, Mo M. Jamshidi
A novel BER-feedback power control algorithm for Personal Area Network Devices. SysCon (2013)
Rodrigo Escobar, David Akopian, Deborah Parra-Medina, Laura Esparza
MessageSpace: a messaging system for health research. Multimedia Content and Mobile Devices (2013)
Sahak Kaghyan, Hakob Sarukhanyan, David Akopian
Human movement activity classification approaches that use wearable sensors and mobile devices. Multimedia Content and Mobile Devices (2013)
Andre M. Mayers, B. Kone, G. V. S. Raju, David Akopian
An adaptive stochastic-based M-ary Modulation extension algorithm for short range wireless CRs. WTS (2013)
David Akopian, Phanikrishna Sagiraju, Brent Nowak
Fast Time-Recursive Block Correlators for Pseudorandom Sequences. IEEE Trans. Circuits Syst. I Regul. Pap. (7) (2013)
Jayanthi Narisetty, Arpine Soghoyan, Mohanapriya Chittoor Sundaramurthy, David Akopian
SUPL support for mobile devices. Multimedia on Mobile Devices / Multimedia Content Access: Algorithms and Systems (2012)
Santosh Chandana Golagani, Moosa Esfahanian, David Akopian
Template-based education toolkit for mobile platforms. Multimedia on Mobile Devices / Multimedia Content Access: Algorithms and Systems (2012)
Catalin Lacatus, David Akopian, Mehdi Shadaram
Reduced complexity crosscorrelation interference mitigation in GPS-enabled collaborative ad-hoc wireless networks - Theory. Comput. Electr. Eng. 38 (3) (2012)
Mehdi Shadaram, David Akopian, Glaucio H. S. Carvalho
Guest Editors' Introduction to the Special Issue on The design and analysis of wireless systems: New inspirations. Comput. Electr. Eng. 38 (3) (2012)
Aleksandr Panchul, David Akopian, Mo M. Jamshidi
Temporal-spatial fuzzy logic algorithm for effective dynamic load balancing in distributed 3D graphics engine. Int. J. Syst. Syst. Eng. 2 (4) (2011)
Arsen Melkonyan, Sireesha Yalamanchili, David Akopian, Philip C. L. Chen
Integrity monitoring and thresholding-based WLAN indoor positioning algorithm for mobile devices. SoSE (2011)
David Akopian, Varun Jayaram, Lakshmipathi Aaleswara, Moosa Esfahanian, Cynthia Mojica, Deborah Parra-Medina, Sahak Kaghyan
Mobile text messaging solutions for obesity prevention. Multimedia on Mobile Devices / Multimedia Content Access: Algorithms and Systems (2011)
Mohanapriya Chittoor Sundaramurthy, Sandesh N. Chayapathy, Abhinav Kumar, David Akopian
Wi-Fi assistance to SUPL-based Assisted-GPS simulators for indoor positioning. CCNC (2011)
Nabil Kerkiz, Adel Hussein, Amr Elchouemi, Adnan Suleiman, David Akopian
Design Method for Scalable DCT Algorithm Suitable for Reconfigurable Systems. ESA (2010)
Arsen Melkonyan, David Akopian, C. L. Philip Chen
A Remote Over-Internet Hands-on Laboratory. SMC (2009)
Arsen Melkonyan, David Akopian, C. L. Philip Chen
A Sensor Placement Measure for Impact Detection in Structural Health Monitoring. SMC (2009)
Adnan Suleiman, Adel Hussein, Khaldoun Bataineh, David Akopian
Scalable FFT Architecture vs. Multiple Pipeline FFT Architectures Hardware Implementation and Cost. SMC (2009)
Catalin Lacatus, David Akopian, Prasad Yaddanapudi, Mehdi Shadaram
Flexible Spectrum and Power Allocation for OFDM Unlicensed Wireless Systems. IEEE Syst. J. 3 (2) (2009)
Grant Huang, Arpine Soghoyan, David Akopian, C. L. Philip Chen, Abhay Samant
A Land Mobile Channel Modeling in LabVIEW. SMC (2009)
David Akopian, Jari Syrjärinne
A Fast Positioning Method Without Navigation Data Decoding for Assisted GPS Receivers. IEEE Trans. Veh. Technol. 58 (8) (2009)
Catalin Lacatus, David Akopian, Mehdi Shadaram
Reduced Complexity Algorithm for Spreading Sequence Design. IEEE Trans. Circuits Syst. II Express Briefs (12) (2008)
David Akopian
On Optimal Bit Allocation for Classification-Based Source-Dependent Transform Coding. J. Electr. Comput. Eng. 2008 (2008)
David Akopian, Sos S. Agaian
A Fast Time-Recursive Correlator for DSSS Communications. IEEE Signal Process. Lett. 15 (2008)

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Publication Activity (10 Years)

Top Topics

Top Venues

David Akopian