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ORCIDDavid Akopian
Person information
- affiliation: University of Texas at San Antonio, Department of Electrical and Computer Engineering, TX, USA
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2020 – today
- 2023
[i15]Mohammad Nadim, Wonjun Lee, David Akopian:
Kernel-level Rootkit Detection, Prevention and Behavior Profiling: A Taxonomy and Survey. CoRR abs/2304.00473 (2023)- 2022
- [j40]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: 53208-53224 (2022) - [c37]Devasena Inupakutika, Bridget Davis, Qirui Yang, Daniel Kim, David Akopian:
Quantifying Performance Gains of GPUDirect Storage. NAS 2022: 1-9 - 2020
- [j39]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): 145-150 (2020) - [j38]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: 103420 (2020) - [j37]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): 4132-4151 (2020) - [j36]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): 4224-4237 (2020) - [c36]Gerson Rodriguez, Devasena Inupakutika, Sahak Kaghyan, David Akopian, Palden Lama, Patricia Chalela, Amelie G. Ramirez:
Performance Assessment of mHealth Apps. PerCom Workshops 2020: 1-7 - [c35]Erick Schmidt, Nikolaos Gatsis, David Akopian:
High-Resolution Correlator Based Detection of GPS Spoofing Attacks Using the LASSO. PLANS 2020: 1196-1201 - [i14]Erick Schmidt, Nikolaos Gatsis, David Akopian:
A GPS spoofing detection and classification correlator-based technique using the LASSO. CoRR abs/2004.13900 (2020)
2010 – 2019
- 2019
- [j35]Erick Schmidt, Devasena Inupakutika, Rahul Mundlamuri, David Akopian:
SDR-Fi: Deep-Learning-Based Indoor Positioning via Software-Defined Radio. IEEE Access 7: 145784-145797 (2019) - [j34]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): 2768-2784 (2019) - [j33]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): 4937-4944 (2019) - [i13]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 abs/1901.03434 (2019) - [i12]Erick Schmidt, Misbahuddin A. Mohammed, David Akopian:
A Performance Study of a Fast-Rate WLAN Fingerprint Measurement Collection Method. CoRR abs/1902.05646 (2019) - [i11]Erick Schmidt, David Akopian, Daniel J. Pack:
Development of a Real-Time Software-Defined Radio GPS Receiver Exploiting a LabVIEW-based Instrumentation Environment. CoRR abs/1902.07095 (2019) - [i10]Junhwan Lee, Ahmad F. Taha, Nikolaos Gatsis, David Akopian:
Tuning-Free, Low Memory Robust Estimator to Mitigate GPS Spoofing Attacks. CoRR abs/1906.03928 (2019) - [i9]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 abs/1907.00460 (2019) - [i8]Erick Schmidt, David Akopian:
Exploiting Acceleration Features of LabVIEW platform for Real-Time GNSS Software Receiver Optimization. CoRR abs/1907.00463 (2019) - [i7]Erick Schmidt, David Akopian:
Fast prototyping of an SDR WLAN 802.11b receiver for an indoor positioning system. CoRR abs/1907.00465 (2019) - [i6]Erick Schmidt, David Akopian:
A Fast-rate WLAN Measurement Tool for Improved Miss-rate in Indoor Navigation. CoRR abs/1907.00468 (2019) - [i5]Erick Schmidt, David Akopian:
Indoor positioning system using WLAN channel estimates as fingerprints for mobile devices. CoRR abs/1907.00478 (2019) - 2018
- [j32]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): 6425-6435 (2018) - [j31]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): 2082-2096 (2018) - [j30]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): 2273-2281 (2018) - [c34]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: 931-939 - [c33]Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian:
Evaluation of the detection and mitigation of time synchronization attacks on the global positioning system. PLANS 2018: 1368-1371 - [i4]Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian, Ahmad F. Taha:
Real-Time Rejection and Mitigation of Time Synchronization Attacks on the Global Positioning System. CoRR abs/1802.01649 (2018) - 2017
- [j29]Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian:
Modern WLAN Fingerprinting Indoor Positioning Methods and Deployment Challenges. IEEE Commun. Surv. Tutorials 19(3): 1974-2002 (2017) - [j28]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): 2079-2092 (2017) - [j27]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): 6498-6510 (2017) - 2016
- [c32]Ali Khalajmehrabadi, David Akopian, Daniel J. Pack:
Range-based trilateration using multipurpose cost function optimization with Lagrangian multipliers. PLANS 2016: 118-121 - [c31]Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian:
Indoor WLAN localization using group sparsity optimization technique. PLANS 2016: 584-588 - [i3]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 abs/1610.05419 (2016) - [i2]Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian:
Structured Group Sparsity: A Novel Indoor WLAN Localization, Outlier Detection, and Radio Map Interpolation Scheme. CoRR abs/1610.05421 (2016) - [i1]Ali Khalajmehrabadi, Nikolaos Gatsis, David Akopian:
Modern WLAN Fingerprinting Indoor Positioning Methods and Deployment Challenges. CoRR abs/1610.05424 (2016) - 2015
- [j26]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): 1011-1019 (2015) - [j25]Grant Huang, David Akopian, C. L. Philip Chen:
Network delay modeling for assisted GPS. IEEE Trans. Aerosp. Electron. Syst. 51(1): 52-64 (2015) - [c30]Brian Kelley, Gonzalo De La Torre Parra, David Akopian:
Cognitive interference avoidance in 4th generation GPS. SoSE 2015: 410-415 - 2014
- [j24]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): 125-132 (2014) - [j23]Andreas Gampe, Arsen Melkonyan, Murillo Pontual, David Akopian:
An Assessment of Remote Laboratory Experiments in Radio Communication. IEEE Trans. Educ. 57(1): 12-19 (2014) - [j22]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): 477-485 (2014) - [j21]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): 1896-1906 (2014) - [j20]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): 2001-2012 (2014) - [j19]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): 2583-2590 (2014) - [c29]Sos S. Agaian, Mehdi Roopaei, David Akopian:
Thermal-image quality measurements. ICASSP 2014: 2779-2783 - [c28]Mehdi Roopaei, Sos S. Agaian, Mehdi Shadaram, David Akopian, Hélio Rios:
Thermal conditions of breast cancer progress-treatment. SMC 2014: 642-647 - 2013
- [j18]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: 13-28 (2013) - [j17]David Akopian, Phanikrishna Sagiraju, Brent Nowak:
Fast Time-Recursive Block Correlators for Pseudorandom Sequences. IEEE Trans. Circuits Syst. I Regul. Pap. 60-I(7): 1835-1844 (2013) - [c27]David Akopian, Arpine Soghoyan:
A LabVIEW-based fast prototyping software defined GPS receiver platform. GlobalSIP 2013: 1230-1233 - [c26]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: 370-375 - [c25]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: 1-6 - 2012
- [j16]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): 471-472 (2012) - [j15]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): 603-615 (2012) - 2011
- [j14]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): 309-328 (2011) - [c24]Mohanapriya Chittoor Sundaramurthy, Sandesh N. Chayapathy, Abhinav Kumar, David Akopian:
Wi-Fi assistance to SUPL-based Assisted-GPS simulators for indoor positioning. CCNC 2011: 918-922 - [c23]Arsen Melkonyan, Sireesha Yalamanchili, David Akopian, Philip C. L. Chen:
Integrity monitoring and thresholding-based WLAN indoor positioning algorithm for mobile devices. SoSE 2011: 191-196 - 2010
- [c22]Nabil Kerkiz, Adel Hussein, Amr Elchouemi, Adnan Suleiman, David Akopian:
Design Method for Scalable DCT Algorithm Suitable for Reconfigurable Systems. ESA 2010: 185-191
2000 – 2009
- 2009
- [j13]Catalin Lacatus, David Akopian, Prasad Yaddanapudi, Mehdi Shadaram:
Flexible Spectrum and Power Allocation for OFDM Unlicensed Wireless Systems. IEEE Syst. J. 3(2): 254-264 (2009) - [j12]David Akopian, Jari Syrjärinne:
A Fast Positioning Method Without Navigation Data Decoding for Assisted GPS Receivers. IEEE Trans. Veh. Technol. 58(8): 4640-4645 (2009) - [c21]Arsen Melkonyan, David Akopian, C. L. Philip Chen:
A Sensor Placement Measure for Impact Detection in Structural Health Monitoring. SMC 2009: 3775-3778 - [c20]Adnan Suleiman, Adel Hussein, Khaldoun Bataineh, David Akopian:
Scalable FFT Architecture vs. Multiple Pipeline FFT Architectures Hardware Implementation and Cost. SMC 2009: 3792-3796 - [c19]Grant Huang, Arpine Soghoyan, David Akopian, C. L. Philip Chen, Abhay Samant:
A Land Mobile Channel Modeling in LabVIEW. SMC 2009: 4575-4580 - [c18]Arsen Melkonyan, David Akopian, C. L. Philip Chen:
A Remote Over-Internet Hands-on Laboratory. SMC 2009: 4634-4640 - 2008
- [j11]David Akopian:
On Optimal Bit Allocation for Classification-Based Source-Dependent Transform Coding. J. Electr. Comput. Eng. 2008 (2008) - [j10]David Akopian, Sos S. Agaian:
A Fast Time-Recursive Correlator for DSSS Communications. IEEE Signal Process. Lett. 15: 589-592 (2008) - [j9]Christopher B. Smith, Sos S. Agaian, David Akopian:
A Wavelet-Denoising Approach Using Polynomial Threshold Operators. IEEE Signal Process. Lett. 15: 906-909 (2008) - [j8]Catalin Lacatus, David Akopian, Mehdi Shadaram:
Reduced Complexity Algorithm for Spreading Sequence Design. IEEE Trans. Circuits Syst. II Express Briefs 55-II(12): 1309-1313 (2008) - [c17]Adnan Suleiman, Hani H. Saleh, Adel Hussein, David Akopian:
A family of scalable FFT architectures and an implementation of 1024-point radix-2 FFT for real-time communications. ICCD 2008: 321-327 - 2007
- [c16]David Akopian, Paul Ybarra, C. L. Philip Chen:
Optimization of Time-Varying Two-Band Filterbanks for Wavelet Transforms. SoSE 2007: 1-5 - [c15]Catalin Lacatus, David Akopian, Mehdi Shadaram:
Spreading Sequence Design for MC-CDMA Systems. SoSE 2007: 1-5 - [c14]Phani K. Sagiraju, Praveen Gali, David Akopian, G. V. S. Raju:
Enhancing Security in Wireless Networks Using Positioning Techniques. SoSE 2007: 1-6 - [c13]Phani K. Sagiraju, Aleksandr Panchul, G. V. S. Raju, David Akopian:
A Software GPS+Receiver Toolkit. SoSE 2007: 1-6 - 2005
- [j7]David Akopian, Jaakko Astola:
An optimal nonlinear extension of linear filters based on distributed arithmetic. IEEE Trans. Image Process. 14(5): 616-623 (2005) - 2003
- [j6]David Akopian, Jarmo Takala, Jukka Saarinen, Jaakko Astola:
Multistage interconnection networks for parallel Viterbi decoders. IEEE Trans. Commun. 51(9): 1536-1545 (2003) - 2001
- [c12]Jarmo Takala, Tuomas Järvinen, Perttu Salmela, David Akopian:
Multi-port interconnection networks for radix-R algorithms. ICASSP 2001: 1177-1180 - [c11]Tuomas Järvinen, Jarmo Takala, David Akopian, Jukka Saarinen:
Register-based multi-port perfect shuffle networks. ISCAS (4) 2001: 306-309 - [c10]Jari Nikara, Jarmo Takala, David Akopian, Jukka Saarinen:
Pipeline architecture for DCT/IDCT. ISCAS (4) 2001: 902-905 - 2000
- [j5]Jarmo Takala, David Akopian, Jaakko Astola, Jukka Saarinen:
Constant geometry algorithm for discrete cosine transform. IEEE Trans. Signal Process. 48(6): 1840-1843 (2000) - [c9]Konstantin Balashov, David Akopian, Jaakko Astola:
Lossless compression of natural images using regressive analysis. EUSIPCO 2000: 1-3 - [c8]Jari Nikara, Jarmo Takala, David Akopian, Jukka Saarinen, Jaakko Astola:
Pipelined architecture for inverse discrete cosine transform. EUSIPCO 2000: 1-4 - [c7]Jarmo Takala, Jari Nikara, David Akopian, Jaakko Astola, Jukka Saarinen:
Pipeline architecture for 8×8 discrete cosine transform. ICASSP 2000: 3303-3306 - [c6]Jarmo Takala, David Akopian, Jaakko T. Astola, Jukka P. Saarinen:
Scalable interconnection networks for partial column array processor architectures. ISCAS 2000: 513-516
1990 – 1999
- 1999
- [j4]Jaakko Astola, David Akopian:
Architecture-oriented regular algorithms for discrete sine and cosine transforms. IEEE Trans. Signal Process. 47(4): 1109-1124 (1999) - [c5]David Akopian, Mika Helsingius, Jaakko Astola:
An optimized multiscanning approach for still image compression. MMSP 1999: 401-406 - 1997
- [j3]Jaakko Astola, David Akopian, Olli Vainio, Sos S. Agaian:
New digit-serial implementations of stack filters. Signal Process. 61(2): 181-197 (1997) - [j2]David Akopian:
Systematic approaches to parallel architectures for DSP algorithms. Signal Process. 62(3): 367-368 (1997) - 1996
- [c4]David Akopian, Jaakko Astola:
Processor architecture for extended lapped transform. EUSIPCO 1996: 1-4 - [c3]David Akopian, Jaakko Astola:
Pipeline processor for fast architecture oriented regular DCT-IDCT algorithm. ICASSP 1996: 1319-1322 - [c2]Imed Ben Dhaou, David Akopian, Pauli Kuosmanen, Jaakko Astola:
Fault detection in stack filter circuits based on sample selection probabilities. ICIP (1) 1996: 765-768 - 1995
- [j1]David Akopian, Olli Vainio, Sos S. Agaian, Jaakko Astola:
Processors for generalized stack filters. IEEE Trans. Signal Process. 43(6): 1541-1546 (1995) - [c1]Jaakko Astola, Pauli Kuosmanen, David Akopian, David Z. Gevorkian:
Fibonacci P-Code Method for Generalized Stack Filtering. ISCAS 1995: 1900-1903
Coauthor Index
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