M. Ogorzalek - Academia.edu (original) (raw)
Papers by M. Ogorzalek
Proceedings of the IEEE
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Proceedings of the 2002 American Control Conference (IEEE Cat. No.CH37301)
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2015 IEEE Global Communications Conference (GLOBECOM), 2015
Securing Internet of Things is currently one of the most challenging tasks standing before the re... more Securing Internet of Things is currently one of the most challenging tasks standing before the research community. Finding adequate combination of strong cryptography, lightweight computation and minimalistic data transmission with scarce energy resources and no maintenance times is very hard. This paper introduces new mechanism for IEEE 802.1X authentication scheme that has been previously extended for the IEEE 802.15.4 networks. The new solution has been designed to minimize the number of transmitted packets during the authentication process through maximization of the Extensible Authentication Protocol Maximum Transfer Unit. The results have been promising for the certificate based EAP Methods with reduction of around 10% of transferred packets for the EAP-TLS-RSA based methods and around 7% for the EAP-TLS-ECDSA based methods.
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2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353)
In our previous paper we proposed to employ simple one-dimensional maps as sources of signal sequ... more In our previous paper we proposed to employ simple one-dimensional maps as sources of signal sequences which could be used as approximations to any real measured time series. The effectiveness of the approach depends on the procedures proposed for solving the inverse problem, formulated as finding initial conditions for a given map which then will reproduce a given signal (time series) with assumed accuracy. In this paper, we investigate the applicability and effectiveness of standard statistical approaches for estimation of initial conditions, which may find application in our signal compression scheme.
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IEEE Circuits and Systems Magazine, 2005
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Chaos, Solitons & Fractals, 1997
... Mickiewicza 30, 30-059 Krakow, Poland COLM A. MURPHY Silicon and Software Systems, Ballymoss ... more ... Mickiewicza 30, 30-059 Krakow, Poland COLM A. MURPHY Silicon and Software Systems, Ballymoss Road, Sandyford Industrial Estate, Dublin 18, Ireland ... Maier, T, D;. Gillis, Z. and Hunt, ER, Dynamical control of a chaotic laser: experimental stabilization of a globally coupled ...
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Over the past decade, the consensus of multiagent systems has received an increasing attention in... more Over the past decade, the consensus of multiagent systems has received an increasing attention in various fields, such as mathematics, physics, biology, and engineering sciences. There arc numerous results reported on the comsensus of multiagent systems. Now it is necessary to review the recent advances in consensus of multiagent systems. This paper firstly reviews the main mathematical models of multiagcnt systems, including Ooids model, Vicsek model, and Couzin-Levin model. Moreover, this paper reviews the main advances in the consensus of multiagent systems, including the linear local updating rules, nonlinear local updating rules, and leader and asymmetric matrix cases.
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IEEE Transactions on Circuits and Systems, 1993
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Proceedings of 1997 IEEE International Symposium on Circuits and Systems. Circuits and Systems in the Information Age ISCAS '97, 1997
We apply standard automatic engineering approaches to investigate the problem of synchronization ... more We apply standard automatic engineering approaches to investigate the problem of synchronization in higher-dimensional possibly hyper-chaotic systems. The concept of observability and construction of an observer for a chaotic system offers a general framework for proving synchronization and building synchronized systems applicable to data transmission on a chaotic carrier. Furthermore the concepts of identifiability offer some insight into transmission security
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SPIE Proceedings, 1995
We show how it is possible to exploit a priori knowledge of the nonlinear dynamics of a system. G... more We show how it is possible to exploit a priori knowledge of the nonlinear dynamics of a system. Given a signal produced by a system, we first identify the parameters of the system and second we code sub-intervals of the signal into initial state-space points of the identified system. As a result of this method a whole waveform is coded as a sequence of points in state- space, a sequence of interval durations and a system of ordinary differential equations. We test these concepts on a challenging example in which the signal to be coded and compressed is produced by a chaotic oscillator.
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Keywords: chaos ; Non-Linear Signal Processing Reference LANOS-CONF-1994-011 Record created on 20... more Keywords: chaos ; Non-Linear Signal Processing Reference LANOS-CONF-1994-011 Record created on 2004-12-03, modified on 2017-05-12
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We propose a low-dimensional nonlinear model explaining the ECG dynamics, suitable for data compr... more We propose a low-dimensional nonlinear model explaining the ECG dynamics, suitable for data compression and possibly feature detection. Tests on real clinically measured ECG signals confirmed very good performance of the model in terms of modeling errors and compression ratio.
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IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 1997
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Journal of Circuits, Systems and Computers, 1993
The occasional proportional feedback (OPF) control technique has been successful in stabilizing p... more The occasional proportional feedback (OPF) control technique has been successful in stabilizing periodic orbits in both periodically driven and autonomous systems undergoing chaotic behavior. By applying this technique to the well-known Chua's circuit, we are able to control a variety of periodic orbits including single-correction, low-period orbits and multiple-correction, high-period orbits. Also, by employing two control circuits, we are able to stabilize orbits that visit both regions of Chua's circuit's double-scroll attractor, applying corrections in each of these regions during a single orbit.
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Keywords: chaos Reference LANOS-CONF-1996-002 Record created on 2004-12-03, modified on 2017-05-12
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Analog Integrated Circuits and Signal Processing, 2013
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Proceedings of the IEEE
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Proceedings of the 2002 American Control Conference (IEEE Cat. No.CH37301)
Bookmarks Related papers MentionsView impact
2015 IEEE Global Communications Conference (GLOBECOM), 2015
Securing Internet of Things is currently one of the most challenging tasks standing before the re... more Securing Internet of Things is currently one of the most challenging tasks standing before the research community. Finding adequate combination of strong cryptography, lightweight computation and minimalistic data transmission with scarce energy resources and no maintenance times is very hard. This paper introduces new mechanism for IEEE 802.1X authentication scheme that has been previously extended for the IEEE 802.15.4 networks. The new solution has been designed to minimize the number of transmitted packets during the authentication process through maximization of the Extensible Authentication Protocol Maximum Transfer Unit. The results have been promising for the certificate based EAP Methods with reduction of around 10% of transferred packets for the EAP-TLS-RSA based methods and around 7% for the EAP-TLS-ECDSA based methods.
Bookmarks Related papers MentionsView impact
2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353)
In our previous paper we proposed to employ simple one-dimensional maps as sources of signal sequ... more In our previous paper we proposed to employ simple one-dimensional maps as sources of signal sequences which could be used as approximations to any real measured time series. The effectiveness of the approach depends on the procedures proposed for solving the inverse problem, formulated as finding initial conditions for a given map which then will reproduce a given signal (time series) with assumed accuracy. In this paper, we investigate the applicability and effectiveness of standard statistical approaches for estimation of initial conditions, which may find application in our signal compression scheme.
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
[
IEEE Circuits and Systems Magazine, 2005
Bookmarks Related papers MentionsView impact
Chaos, Solitons & Fractals, 1997
... Mickiewicza 30, 30-059 Krakow, Poland COLM A. MURPHY Silicon and Software Systems, Ballymoss ... more ... Mickiewicza 30, 30-059 Krakow, Poland COLM A. MURPHY Silicon and Software Systems, Ballymoss Road, Sandyford Industrial Estate, Dublin 18, Ireland ... Maier, T, D;. Gillis, Z. and Hunt, ER, Dynamical control of a chaotic laser: experimental stabilization of a globally coupled ...
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Over the past decade, the consensus of multiagent systems has received an increasing attention in... more Over the past decade, the consensus of multiagent systems has received an increasing attention in various fields, such as mathematics, physics, biology, and engineering sciences. There arc numerous results reported on the comsensus of multiagent systems. Now it is necessary to review the recent advances in consensus of multiagent systems. This paper firstly reviews the main mathematical models of multiagcnt systems, including Ooids model, Vicsek model, and Couzin-Levin model. Moreover, this paper reviews the main advances in the consensus of multiagent systems, including the linear local updating rules, nonlinear local updating rules, and leader and asymmetric matrix cases.
Bookmarks Related papers MentionsView impact
IEEE Transactions on Circuits and Systems, 1993
Bookmarks Related papers MentionsView impact
Proceedings of 1997 IEEE International Symposium on Circuits and Systems. Circuits and Systems in the Information Age ISCAS '97, 1997
We apply standard automatic engineering approaches to investigate the problem of synchronization ... more We apply standard automatic engineering approaches to investigate the problem of synchronization in higher-dimensional possibly hyper-chaotic systems. The concept of observability and construction of an observer for a chaotic system offers a general framework for proving synchronization and building synchronized systems applicable to data transmission on a chaotic carrier. Furthermore the concepts of identifiability offer some insight into transmission security
Bookmarks Related papers MentionsView impact
SPIE Proceedings, 1995
We show how it is possible to exploit a priori knowledge of the nonlinear dynamics of a system. G... more We show how it is possible to exploit a priori knowledge of the nonlinear dynamics of a system. Given a signal produced by a system, we first identify the parameters of the system and second we code sub-intervals of the signal into initial state-space points of the identified system. As a result of this method a whole waveform is coded as a sequence of points in state- space, a sequence of interval durations and a system of ordinary differential equations. We test these concepts on a challenging example in which the signal to be coded and compressed is produced by a chaotic oscillator.
Bookmarks Related papers MentionsView impact
Keywords: chaos ; Non-Linear Signal Processing Reference LANOS-CONF-1994-011 Record created on 20... more Keywords: chaos ; Non-Linear Signal Processing Reference LANOS-CONF-1994-011 Record created on 2004-12-03, modified on 2017-05-12
Bookmarks Related papers MentionsView impact
We propose a low-dimensional nonlinear model explaining the ECG dynamics, suitable for data compr... more We propose a low-dimensional nonlinear model explaining the ECG dynamics, suitable for data compression and possibly feature detection. Tests on real clinically measured ECG signals confirmed very good performance of the model in terms of modeling errors and compression ratio.
Bookmarks Related papers MentionsView impact
IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 1997
Bookmarks Related papers MentionsView impact
Journal of Circuits, Systems and Computers, 1993
The occasional proportional feedback (OPF) control technique has been successful in stabilizing p... more The occasional proportional feedback (OPF) control technique has been successful in stabilizing periodic orbits in both periodically driven and autonomous systems undergoing chaotic behavior. By applying this technique to the well-known Chua's circuit, we are able to control a variety of periodic orbits including single-correction, low-period orbits and multiple-correction, high-period orbits. Also, by employing two control circuits, we are able to stabilize orbits that visit both regions of Chua's circuit's double-scroll attractor, applying corrections in each of these regions during a single orbit.
Bookmarks Related papers MentionsView impact
Keywords: chaos Reference LANOS-CONF-1996-002 Record created on 2004-12-03, modified on 2017-05-12
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Analog Integrated Circuits and Signal Processing, 2013
Bookmarks Related papers MentionsView impact