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Documents authored by Janek, Alex


Document
07041 Working Group – Towards Interfaces for Integrated Performance and Power Analysis and Simulation

Authors: Chris Bleakley, Tom Clerckx, Harald Devos, Matthias Grumer, Alex Janek, Ulrich Kremer, Christian W. Probst, Phillip Stanley-Marbell, Christian Steger, Vasanth Venkatachalam, and Manuel Wendt

Published in: Dagstuhl Seminar Proceedings, Volume 7041, Power-aware Computing Systems (2007)


Abstract
In the design and optimization of power-aware computing systems, it is often desired to estimate power consumption at various levels of abstraction, e.g., at the transistor, gate, RTL, behavioral or transaction levels. Tools for power estimation at these different levels of abstraction require specialized expertise, e.g., understanding of device physics for circuit-level power estimation, and as such are necessarily developed by different research communities. In the optimization of complete platforms however, it is desired to be able to obtain aggregate power and performance estimates for the different components of a system, and this requires the ability to model the system at a mixture of levels of abstraction. One approach to enabling such cross-abstraction modeling, is to define a mechanism for interchange of data between tools at different layers of abstraction, for both static analysis and simulation-based studies. This document presents preliminary discussions on the requirements of such an interface.

Cite as

Chris Bleakley, Tom Clerckx, Harald Devos, Matthias Grumer, Alex Janek, Ulrich Kremer, Christian W. Probst, Phillip Stanley-Marbell, Christian Steger, Vasanth Venkatachalam, and Manuel Wendt. 07041 Working Group – Towards Interfaces for Integrated Performance and Power Analysis and Simulation. In Power-aware Computing Systems. Dagstuhl Seminar Proceedings, Volume 7041, pp. 1-6, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2007)


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@InProceedings{bleakley_et_al:DagSemProc.07041.3,
  author =	{Bleakley, Chris and Clerckx, Tom and Devos, Harald and Grumer, Matthias and Janek, Alex and Kremer, Ulrich and Probst, Christian W. and Stanley-Marbell, Phillip and Steger, Christian and Venkatachalam, Vasanth and Wendt, Manuel},
  title =	{{07041 Working Group – Towards Interfaces for Integrated Performance and Power Analysis and Simulation}},
  booktitle =	{Power-aware Computing Systems},
  pages =	{1--6},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7041},
  editor =	{Luca Benini and Naehyuck Chang and Ulrich Kremer and Christian W. Probst},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07041.3},
  URN =		{urn:nbn:de:0030-drops-11072},
  doi =		{10.4230/DagSemProc.07041.3},
  annote =	{Keywords: Power Estimation Tools, Simulation, Tool Interfaces}
}
Document
Lifetime Extension of Higher Class UHF RFID Tags using special Power Management Techniques and Energy Harvesting Devices

Authors: Alex Janek, Christian Steger, Josef Preishuber-Pfluegl, and Markus Pistauer

Published in: Dagstuhl Seminar Proceedings, Volume 7041, Power-aware Computing Systems (2007)


Abstract
Enhanced RFID tag technology especially in the UHF frequency range provides extended functionality like high operating range and sensing and monitoring capabilities. Such functionality requiring extended system structures including data acquisition units, real time clocks and active transmitters causes a high energy consumption of the tag and requires an on board energy store (battery). As a key parameter of the reliability of an RFID system is the lifetime, the energy budget of the higher class tag has to be as balanced as possible. This can be achieved by using energy harvesting devices as additional power supply. The PowerTag project and thus this paper proposes special power management mechanisms in combination with special energy storage structures interfacing energy harvesting devices and dealing with their special requirements. First various power management and power saving techniques are simulated and their performance is evaluated. In a second step different implementation variants of energy storage structures are compared by using accurate simulation models of the various parts of the system. The results are compared to manufacturer given and guaranteed system performance parameters of a state-of-the-art higher class UHF RFID system. The presented approach combines two simulations for the design and the evaluation of different tag architectures and power saving techniques. Simulation results are showing an improvement of over 44\% of achievable lifetime applying the power saving techniques and power subsystem architectures presented in this paper, compared to a state-of-the-art higher class system.

Cite as

Alex Janek, Christian Steger, Josef Preishuber-Pfluegl, and Markus Pistauer. Lifetime Extension of Higher Class UHF RFID Tags using special Power Management Techniques and Energy Harvesting Devices. In Power-aware Computing Systems. Dagstuhl Seminar Proceedings, Volume 7041, pp. 1-20, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2007)


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@InProceedings{janek_et_al:DagSemProc.07041.9,
  author =	{Janek, Alex and Steger, Christian and Preishuber-Pfluegl, Josef and Pistauer, Markus},
  title =	{{Lifetime Extension of Higher Class UHF RFID Tags using special Power Management Techniques and Energy Harvesting Devices}},
  booktitle =	{Power-aware Computing Systems},
  pages =	{1--20},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7041},
  editor =	{Luca Benini and Naehyuck Chang and Ulrich Kremer and Christian W. Probst},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07041.9},
  URN =		{urn:nbn:de:0030-drops-11041},
  doi =		{10.4230/DagSemProc.07041.9},
  annote =	{Keywords: Higher Class UHF RFID, Energy harvesting, Energy storage architectures, Lifetime extension}
}
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