Short Bio
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Alper Ucar is an EPSRC Research Fellow at University of Westminster where he received a Ph.D. degree in
Electronics Engineering for his work on efficient subsampling Delta-Sigma (ΔΣ) data conversion
for multi-constellation Global Navigation Satellite Systems (GNSS) receivers. He also holds M.Sc. and B.Sc.
degrees in Electrical & Electronics Engineering from Hacettepe University
and Yeditepe University in Turkey, respectively.
His research interests include mixed-signal integrated circuit design, ΔΣ modulation
techniques, and subsampling GNSS receivers. He is currently working on the design and implementation of multi-constellation
GNSS receivers and high-speed (>1GHz) ΔΣ data converters in CMOS technologies.
Ongoing Projects
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iNsight:
Innovative Navigation using new GNSS SIGnals with Hybridised Technologies,
In collabration with Imperial College, University College London, and University of Nottigham
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Design and Implementation of High-Speed, Jitter Insensitive Continuous-Time Delta Sigma A/D Converters in 90 and 180nm CMOS
Completed Projects
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GNSScope: A Toolbox for End-to-End Modelling, Simulation and Analysis of GNSS, (2008-2010)
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VLSI Implementation of Fuzzy Neural Networks for Turkish Phoneme Classification,
In collaboration with Bristol University, (2005-2007)
PhD Students Co-supervised
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Ilker Yavuz, Novel DSP Architectures for GNSS Signal Acqusition and Tracking
Postgrad/Undergrad Students Supervised
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Abbey Kebede, Real-time Q and Frequency Tuning in CMOS LC Filters
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Carlo Paparo, Embedded Systems Development for GNSS Receivers
 Click Here for a List of Publications and Invited Talks
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Publications
- Ucar, A.; Cetin, E.; Kale, I.; "A Continuous-Time Delta-Sigma Modulator for RF Subsampling Receivers", IEEE Transactions on Circuits and Systems II, vol.59, no.5, pp.272-276, May 2012
- Adane, Y.; Ucar, A.; Kale, I.; "Dual-Tracking Multi-Constellation GNSS Front-End For High-Performance Receiver Applications", Proceedings of the ION GNSS 2011, Portland, OR, USA, 19-23 May 2011
- Ucar, A.; Cetin, E.; Kale, I.; "The Effect of Clock Jitter on the on the Performance of Continuous-Time Delta-Sigma ADC for GNSS Signals", Proceedings of the European Navigation Conference on Global Navigation Satellite Systems (ENC-GNSS) 2009, 3-6 May 2009, Naples, Italy
- Ucar, A.; Cetin, E.; Kale, I.; "On the Implications of Analog-to-Digital Conversion on Variable-Rate Bandpass Sampling GNSS Receivers", Proceedings of the Forty-second Asilomar Conference on Signals Systems and Computers, Pacific Grove, CA, USA, 26-29 Oct 2008
- Kazazoglu, R.; Ucar, A.; Cetin, E.; Kale, I.; "Weak Signal & Multipath Analysis Using GNSScope: A Toolbox for End-to-End Modelling, Simulation and Analysis of GNSS", Proceedings of the Navigation Conference & Exhibition (NAV08/ILA37): Navigation and Location, London, UK, 28 - 30 Oct 2008
- Ucar, A.; Cetin, E.; Kale, I.; "A Low Complexity DSP Driven Analog Impairment Mitigation Scheme for Low-IF GNSS Receivers", Proceedings of the IEEE/ION Position, Location and Navigation Symposium 2008, Monterey, CA, USA, 5-8 May 2008
- Ucar, A.; Alkar,A.Z.; "HW/SW Codesign of FPGA-based Neural Networks", Proceedings of the Fifteenth Turkish Symposium on Artificial Intelligence and Neural Networks (TAINN 2006), June 2006, Gokova Bay, Turkey
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Talks
- "A Bandpass Sampling Receiver for Multi-Constellation GNSS", School of Electronics and Computer Science Research Conference, University of Westminster, London, UK, 3-6 Jul 2010 (Best Presentation Award)
- "A Bandpass Sampling Receiver for GNSS Applications", New Navigators Seminar 2010, Imperial College, London, UK, 16 Jun 2010
- "A Bandpass Sampling Receiver for GNSS Applications", 2009 GNSS Receiver Design and Signal Processing Workshop, University of Westminster, London, UK, 16 Jun 2009.
- "GNSScope: Overview of a Toolbox for end-to-end Modelling, Simulation and Analysis of GNSS Systems", New Navigators Seminar 2008, Imperial College, London, UK, 18 Jun 2008
- "Hardware Neural Networks for Automatic Speech Recognition", Yeditepe University, Istanbul, Turkey, 27 Dec 2006
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