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Sylvain Dufour
ABSTRACT: Design of on-line embedded web server is a one of the difficult task of many real time data acquisition and control system applications. The global system of interconnected computer networks is called as World Wide Web which uses the standard Internet Protocol Suite (TCP/IP) to aid billion of users worldwide and enables the user to interface many real time embedded applications like data acquisition,Industrial automations and safety measures etc,. This paper tells the design and development of on-line Interactive Data Acquisition and Control System (IDACS) using ARM9 based embedded web server. It is permitted to a network, intelligent and digital distributed control system. Single chip IDACS method increses the processing speed of a system and also avoids the problem of poor real time and reliability.This system uses ARM9 Processor and RTLinux. Web server application is ported into an ARM processor using embedded ‘C’ language. Web pages are designed in Hyper text markup language (HTML). Keywords - Embedded ARM9 Processor, RTLinux RTOS, Embedded web server, IDACS.
Embedded Web Server based Interactive data acquisition and Control System
Embedded Web Server based Interactive data acquisition and Control System
IOSR Journals
Estimation of signal to noise ratio (SNR) of received signal and to transmit the signal effectively for the modern communication system. The performance of existing non-data-aided (NDA) SNR estimation methods are substantially degraded for high level modulation scheme such as M-ary amplitude and phase shift keying (APSK) or quadrature amplitude modulation (QAM).In this paper SNR estimation proposed method which uses zero point auto-correlation of received signal per block and auto/cross- correlation of decision feedback signal in orthogonal frequency division multiplexing (OFDM) system. Proposed method can be studied into two types; Type 1 can estimate SNR by zero point auto-correlation of decision feedback signal based on the second moment property. Type 2 uses both zero point auto-correlation and cross-correlation based on the fourth moment property. In block-by-block reception of OFDM system, these two SNR estimation methods can be possible for the practical implementation due to correlation based the estimation method and they show more stable estimation performance than the earlier SNR estimation methods.
Investigation and Analysis of SNR Estimation in OFDM system
Investigation and Analysis of SNR Estimation in OFDM system
IOSR Journals
The physical property of strongly correlated electrons on a three-dimensional (3D) 3 x 3 x 3 cluster of the simple cubic lattice is here presented.In the work we developed the unit step Hamiltonian as a solution to the single band Hubbard Hamiltonian for the case of two electrons interaction in a finite three dimensional lattice. The approximation to the Hubbard Hamiltonian study is actually necessary because of the strong limitation and difficulty pose by the Hubbard Hamiltonian as we move away from finite - size lattices to larger N - dimensional lattices. Thus this work has provided a means of overcoming the finite - size lattice defects as we pass on to a higher dimension. We have shown in this study, that the repulsive Coulomb interaction which in part leads to the strong electronic correlations, would indicate that the two electron system prefer not to condense into s-wave superconducting singlet state (s = 0), at high positive values of the interaction strength. This study reveals that when the Coulomb interaction is zero, that is, for free electron system (non-interacting), thevariational parameters which describe the probability distribution of lattice electron system is the same. The spectra intensity for on-site electrons is zero for all values of the interaction strength
Dynamics of Twointeracting Electronsinthree-Dimensional Lattice
Dynamics of Twointeracting Electronsinthree-Dimensional Lattice
IOSR Journals
Interview dans DataNews, 11-10-2012
Starter? Partez de l’idée que vous n’aurez pas de salaire les premiers mois
Starter? Partez de l’idée que vous n’aurez pas de salaire les premiers mois
Martin van Wunnik
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Sylvain Dufour
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Sylvain Dufour
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Sylvain Dufour
ABSTRACT: Design of on-line embedded web server is a one of the difficult task of many real time data acquisition and control system applications. The global system of interconnected computer networks is called as World Wide Web which uses the standard Internet Protocol Suite (TCP/IP) to aid billion of users worldwide and enables the user to interface many real time embedded applications like data acquisition,Industrial automations and safety measures etc,. This paper tells the design and development of on-line Interactive Data Acquisition and Control System (IDACS) using ARM9 based embedded web server. It is permitted to a network, intelligent and digital distributed control system. Single chip IDACS method increses the processing speed of a system and also avoids the problem of poor real time and reliability.This system uses ARM9 Processor and RTLinux. Web server application is ported into an ARM processor using embedded ‘C’ language. Web pages are designed in Hyper text markup language (HTML). Keywords - Embedded ARM9 Processor, RTLinux RTOS, Embedded web server, IDACS.
Embedded Web Server based Interactive data acquisition and Control System
Embedded Web Server based Interactive data acquisition and Control System
IOSR Journals
Estimation of signal to noise ratio (SNR) of received signal and to transmit the signal effectively for the modern communication system. The performance of existing non-data-aided (NDA) SNR estimation methods are substantially degraded for high level modulation scheme such as M-ary amplitude and phase shift keying (APSK) or quadrature amplitude modulation (QAM).In this paper SNR estimation proposed method which uses zero point auto-correlation of received signal per block and auto/cross- correlation of decision feedback signal in orthogonal frequency division multiplexing (OFDM) system. Proposed method can be studied into two types; Type 1 can estimate SNR by zero point auto-correlation of decision feedback signal based on the second moment property. Type 2 uses both zero point auto-correlation and cross-correlation based on the fourth moment property. In block-by-block reception of OFDM system, these two SNR estimation methods can be possible for the practical implementation due to correlation based the estimation method and they show more stable estimation performance than the earlier SNR estimation methods.
Investigation and Analysis of SNR Estimation in OFDM system
Investigation and Analysis of SNR Estimation in OFDM system
IOSR Journals
The physical property of strongly correlated electrons on a three-dimensional (3D) 3 x 3 x 3 cluster of the simple cubic lattice is here presented.In the work we developed the unit step Hamiltonian as a solution to the single band Hubbard Hamiltonian for the case of two electrons interaction in a finite three dimensional lattice. The approximation to the Hubbard Hamiltonian study is actually necessary because of the strong limitation and difficulty pose by the Hubbard Hamiltonian as we move away from finite - size lattices to larger N - dimensional lattices. Thus this work has provided a means of overcoming the finite - size lattice defects as we pass on to a higher dimension. We have shown in this study, that the repulsive Coulomb interaction which in part leads to the strong electronic correlations, would indicate that the two electron system prefer not to condense into s-wave superconducting singlet state (s = 0), at high positive values of the interaction strength. This study reveals that when the Coulomb interaction is zero, that is, for free electron system (non-interacting), thevariational parameters which describe the probability distribution of lattice electron system is the same. The spectra intensity for on-site electrons is zero for all values of the interaction strength
Dynamics of Twointeracting Electronsinthree-Dimensional Lattice
Dynamics of Twointeracting Electronsinthree-Dimensional Lattice
IOSR Journals
Interview dans DataNews, 11-10-2012
Starter? Partez de l’idée que vous n’aurez pas de salaire les premiers mois
Starter? Partez de l’idée que vous n’aurez pas de salaire les premiers mois
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