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Digitally Enhanced Analog Circuits and Digitally Assisted RF Circuits
The continuing downscaling of feature sizes in integrated circuits has enabled the realization of ever more complex
electronic devices. In addition to purely digital functions such as microprocessors, we have seen an extraordinary growth in wireless and wireline communications. Since most communication channels are "analog" in nature, such
applications are typically partitioned into an analog front-end and a digital back-end processing unit.
Since the analog and digital system elements usually obey different limits and technology trends, proper partitioning is an important challenge. This is particularly so in cases where the analog interface constitutes the system's bottleneck. In recent years, we have seen growing efforts to push the digital
processing functions "closer to the antenna," aiming for a reduction in the complexity of performance-limiting analog
and RF elements. In addition to minimizing analog content, there has been a clear trend toward digitally enhanced and assisted analog design, aiming to leverage digital correction and calibration techniques to improve the analog and RF performance.
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Review Papers
- Franz Dielacher, Christian Vogel, Peter Singerl, Stefan Mendel, Andreas Wiesbauer,
A Holistic Design Approach for Systems on Chip,
22nd IEEE International SOC Conference (SOCC 2009), Belfast (Northern Irland, UK), 9-11 September 2009, pp. 301-306
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- Christian Vogel, Stefan Mendel, Peter Singerl, Franz Dielacher
Digital Signal Processing for Data Converters in Mixed-Signal Systems,
e&i - Elektrotechnik und Informationstechnik, Vol.126, Issue 11, pp. 860-864, November 2009
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- Boris Murmann, Christian Vogel, and Heinz Koeppl,
Digitally Enhanced Analog Circuits: System Aspects,
Proceedings of the 2008 IEEE International Symposium on Circuits and Systems (ISCAS 2008), Seattle (USA), 18-21 May 2008, pp. 560-563
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Sampling and Reconstruction
- Reconstruction from Nonuniformly Sampled Signals
- Michael Soudan and Christian Vogel
Low Complexity Least Squares Filter Design for the Correction of Linear Time-varying Systems,
Proceedings of the 20th European Conference on Circuit Theory and Design (ECCTD 2011), Linköping (Sweden), 29-31 August 2011
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- Michael Soudan and Christian Vogel
On the Correction of Linear Time-varying Systems by Means of Time-varying FIR Filters,
Proceedings of the 54th Midwest Symposium on Circuits and Systems (MWSCAS 2011), Seoul (Korea), 7-10 August 2011
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- Lukas Bolliger, Hans-Andrea Loeliger, and Christian Vogel
Simulation, MMSE estimation, and interpolation of sampled continuous-time signals using factor graphs,
2010 Information Theory and Applications Workshop, UCSD, La Jolla, CA, Jan. 31 - Feb. 5, 2010
[abstr]
[bib][pdf]
- Christian Vogel and Stefan Mendel,
A Flexible and Scalable Structure to Compensate Frequency Response Mismatches in Time-Interleaved ADCs,
IEEE Transactions on Circuits and Systems I: Regular Papers, Vol.56, Issue 11, pp. 2463-2475, November 2009
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Digitally Assisted RF Circuits
- Shuli Chi, Peter Singerl, Christian Vogel
Coding Efficiency Optimization for Multilevel PWM Based Switched-Mode RF Transmitters,
Proceedings of the 54th Midwest Symposium on Circuits and Systems (MWSCAS 2011), Seoul (Korea), 7-10 August 2011
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- Shuli Chi, Christian Vogel, Peter Singerl
The Frequency Spectrum of Polar Modulated PWM Signals and the Image Problem,
Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems (ICECS 2010), Athens (Greece), 12-15 December 2010, pp. 685-688
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- Peter Singerl and Christian Vogel,
A Fast and Accurate Automatic Gain Control for a Wireless Local Area Network Receiver,
Proceedings of 2005 Global Mobile Congress (GMC 2005), Chongqing (China), 10-12 Oct. 2005, pp. 34-38, Special Session of Fourth Generation Mobile Forum
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- Peter Singerl and Christian Vogel,
An Analysis of a Low Complexity Received Signal Strength Indicator for Wireless Applications,
Proceedings of the Austrochip 2004 (Austrochip 2004), Villach (Austria), October 2004, pp. 57-60
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Digitally Enhanced DA Converters
- Christian Vogel, Christoph Krall,
Digital Compensation of In-Band Image Signals Caused by M-Periodic Nonuniform Zero-Order Hold Signals,
Ubiquitous Computing and Communication Journal (UBICC), Special Issue CSNDSP 2008, September 2009
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- Christian Vogel and Christoph Krall,
Compensation of Distortions Caused by Periodic Nonuniform Holding Signals,
Proceedings of the 6th Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP 2008), Graz (Austria), 22-25 July 2008, pp. 152-155
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- Christoph Krall, Christian Vogel, and Klaus Witrisal,
Time-Interleaved Digital-to-Analog Converters for UWB Signal Generation,
Proceedings of the 2007 IEEE International Conference on Ultra-Wideband (ICUWB 2007), Marina Mandar (Singapore), 24-26 September 2007
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Digitally Enhanced All-digital Phase-locked Loops
Digitally Enhanced Time-interleaved ADCs
Software-defined GNSS Receiver
- Bernhard Geiger, Christian Vogel, Michael Soudan
A Comparison Between Ratio Detection and Threshold Comparison for GNSS Acquisition,
IEEE Transactions on Aerospace and Electronic Systems, accepted for publication
- Philipp Berglez. Juergen Seybold, Bernhard C. Geiger, Michael Soudan, Christian Vogel, Christoph Abart, Ajay Pratap Singh, Bernhard Hofmann-Wellenhof
Development of a Dual Frequency Software-based GNSS Receiver,
Proceedings of the ION GNSS 2010 program, Portland (Oregon), September 21-24
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- Bernhard C. Geiger, Michael Soudan, Christian Vogel
On the Detection Probability of Parallel Code Phase Search Algorithms in GPS Receivers,
Proceedings of the The 21th Personal, Indoor and Mobile Radio Conference (PIMRC), Istanbul (Turkey), 26-29 September 2010, pp. 864-869
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