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David Akopian
David Akopian
Other namesDavid A. Akopian, D.A. Akopian, D. Akopian
Verified email at utsa.edu
Title
Cited by
Cited by
Year
Modern WLAN fingerprinting indoor positioning methods and deployment challenges
A Khalajmehrabadi, N Gatsis, D Akopian
IEEE Communications Surveys & Tutorials 19 (3), 1974-2002, 2017
3732017
Fast FFT based GPS satellite acquisition methods
D Akopian
IEE Proceedings-Radar, Sonar and Navigation 152 (4), 277-286, 2005
3522005
Physical activity recognition by smartphones, a survey
J Morales, D Akopian
Biocybernetics and Biomedical Engineering 37 (3), 388-400, 2017
1272017
Weighted dilution of precision as quality measure in satellite positioning
H Sairo, D Akopian, J Takala
IEE Proceedings-Radar, Sonar and Navigation 150 (6), 430-436, 2003
1112003
A wavelet-denoising approach using polynomial threshold operators
CB Smith, S Agaian, D Akopian
IEEE Signal Processing Letters 15, 906-909, 2008
802008
A joint indoor WLAN localization and outlier detection scheme using LASSO and elastic-net optimization techniques
A Khalajmehrabadi, N Gatsis, DJ Pack, D Akopian
IEEE Transactions on Mobile Computing 16 (8), 2079-2092, 2016
762016
A GPS spoofing detection and classification correlator-based technique using the LASSO
E Schmidt, N Gatsis, D Akopian
IEEE Transactions on Aerospace and Electronic Systems 56 (6), 4224-4237, 2020
572020
Software-defined radio GNSS instrumentation for spoofing mitigation: A review and a case study
E Schmidt, Z Ruble, D Akopian, DJ Pack
IEEE Transactions on Instrumentation and Measurement 68 (8), 2768-2784, 2018
542018
Structured group sparsity: A novel indoor WLAN localization, outlier detection, and radio map interpolation scheme
A Khalajmehrabadi, N Gatsis, D Akopian
IEEE Transactions on Vehicular Technology 66 (7), 6498-6510, 2016
532016
Lossless adaptive digital audio steganography
SS Agaian, D Akopian, O Caglayan, SA D'Souza
Conference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems …, 2005
532005
Real-time rejection and mitigation of time synchronization attacks on the global positioning system
A Khalajmehrabadi, N Gatsis, D Akopian, AF Taha
IEEE Transactions on Industrial Electronics 65 (8), 6425-6435, 2018
522018
Determining the correlation between received samples and available replica samples
D Akopian
US Patent 7,272,168, 2007
502007
Reduced complexity acquisition of GPS signals for software embedded applications
PK Sagiraju, S Agaian, D Akopian
IEE Proceedings-Radar, Sonar and Navigation 153 (1), 69-78, 2006
492006
Method in a receiver and a receiver
D Akopian, I Kontola, H Valio, S Turunen
US Patent 6,909,738, 2005
472005
Fast acquisition implementation for high sensitivity global positioning systems receivers based on joint and reduced space search
PK Sagiraju, GVS Raju, D Akopian
IET Radar, Sonar & Navigation 2 (5), 376-387, 2008
462008
Constant geometry algorithm for discrete cosine transform
J Takala, D Akopian, J Astola, J Saarinen
IEEE Transactions on Signal Processing 48 (6), 1840-1843, 2000
462000
Architecture-oriented regular algorithms for discrete sine and cosine transforms
J Astola, D Akopian
IEEE transactions on signal processing 47 (4), 1109-1124, 1999
451999
Methods and systems for digital image security
SS Agaian, D Akopian, RC Cherukuri, JP Perez, BM Rodriguez, ...
US Patent 7,965,861, 2011
412011
Method, apparatus and system for estimating user position with a satellite positioning system in poor signal conditions
D Akopian, J Syrjarinne
US Patent 6,473,694, 2002
402002
SDR-Fi: Deep-learning-based indoor positioning via software-defined radio
E Schmidt, D Inupakutika, R Mundlamuri, D Akopian
IEEE Access 7, 145784-145797, 2019
392019
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