Laurent Herault - Academia.edu (original) (raw)

Papers by Laurent Herault

The transition from the 2 nd generation of mobile cellular networks to the 3 rd one was motivated... more The transition from the 2 nd generation of mobile cellular networks to the 3 rd one was motivated by the introduction of mobile multimedia services. It can be already anticipated that the demand for much higher bit rate services with high mobility will increase rapidly. This kind of demand requires a new air interface technology since current systems offer high bit rate for low mobility or low bit rate for high mobility. In order to satisfy these new services requirements, MATRICE project specifies and evaluates innovative solutions for a broadband component of Beyond 3 rd Generation (B3G) systems supporting bit rates up to 100 Mbps, mobility up to 300km/h and high Quality of Service (QoS) for both indoor and outdoor environments. The solution proposed within MATRICE project will be based on MC-CDMA, advanced features of the physical layer such as multi-user detection, beamforming and MIMO techniques, and sophisticated radio resource management algorithms. The aim of the present del...

Cette these traite de la resolution de problemes d'optimisation tres complexes (np. Complets)... more Cette these traite de la resolution de problemes d'optimisation tres complexes (np. Complets) par le biais de l'etude des systemes complexes artificiels qui imitent les systemes physiques et qui sont simules avec des reseaux neuromimetiques. La solution optimale est identifiee a un etat fondamental d'un systeme physique. Plusieurs techniques neuronales sont presentees pour approcher la solution optimale. Elles utilisent soit l'analyse canonique, soit l'analyse microcanonique, definies en mecanique statistique. Parmi ces methodes, nous presentons l'utilisation des reseaux de hopfield analogiques, le recuit simule, l'approximation du champ moyen, le recuit en champ moyen et le recuit microcanonique. Elles sont particulierement bien adaptees aux problemes de graphes qui traitent de coupure et de connectivite, de morphisme et d'extraction de sous-graphes possedant des proprietes extremales. Dans ce cadre, les problemes de k-partitionnement de graphe, de m...

SIGLEAvailable at INIST (FR), Document Supply Service, under shelf-number : 22495, issue : a.1991... more SIGLEAvailable at INIST (FR), Document Supply Service, under shelf-number : 22495, issue : a.1991 n.73 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

This invention relates to a method for reconstructing a characteristic related to a physical phen... more This invention relates to a method for reconstructing a characteristic related to a physical phenomenon from scattered measurements comprising the steps of: - preparation of a reconstruction model developed field from a priori knowledge about the phenomenon studied to obtain an analytic function; - realization of a field of the mesh; - reconstruction of the field by optimizing the analytical function, and in which the reconstruction model takes into account the physical characteristics of the phenomenon.

This article focuses on the application of combinatorial methods to the optimization of pseudo-ra... more This article focuses on the application of combinatorial methods to the optimization of pseudo-random sequences for spread spectrum communications. This approach enables us to take into account for the first time odd correlations. The families of obtained sequences, in the binary and quaternary cases, are compared with those of the litterature.

on the previous events on advanced wireless technologies, wireless networking, and wireless appli... more on the previous events on advanced wireless technologies, wireless networking, and wireless applications. ICWMC 2012 addressed wireless related topics concerning integration of latest technological advances to realize mobile and ubiquitous service environments for advanced applications and services in wireless networks. Mobility and wireless, special services and lessons learnt from particular deployment complemented the traditional wireless topics. We take here the opportunity to warmly thank all the members of the ICWMC 2012 Technical Program Committee, as well as the numerous reviewers. The creation of such a high quality conference program would not have been possible without their involvement. We also kindly thank all the authors who dedicated much of their time and efforts to contribute to ICWMC 2012. We truly believe that, thanks to all these efforts, the final conference program consisted of top quality contributions. Also, this event could not have been a reality without th...

A method of transmitting spread spectrum by direct sequence, with generation and optimization seq... more A method of transmitting spread spectrum by direct sequence, with generation and optimization sequence. According to the invention, it produces a lot of random sequences and these sequences are optimized by a combinatorial process to minimize the residual noise. Application transmissions.

The Future Internet will be an inherently cyber-physical system, providing native support for man... more The Future Internet will be an inherently cyber-physical system, providing native support for many forms of real world interaction, including sensing and actuation. This will place unique requirements on its architectural design, as a vastly heterogeneous set of stake holders tussling to promote business and social opportunities, while addressing technical and incentive barriers. This paper describes a set of high level architectural models which can be used for including sensing and actuation services into the Future Internet. As such architectures can only be implemented through the cooperation of a wide variety of business actors, the ultimate design will not be under the control of any single entity. Tussles will be played out during the lifecycle of the system, which will cause an evolution of the approach to specific functions. We therefore apply an analysis of these tussles to derive architectural boundaries and interfaces which will allow the system to evolve through these t...

The invention relates to a method ed e zeros formation by a neural network of antennas (A1, A2, .... more The invention relates to a method ed e zeros formation by a neural network of antennas (A1, A2, ..., AM). Each antenna (A j) is associated ee with phase information and gain information. The process ed e comprises, for each antenna, a phase quantization step and a gain quantizing step to de ne least significant bit phase and low weight gain bits, and a step of minimizing the total power received by the neural network of antennas (A1, A2, ..., AM) by modification of at least one least significant bit of gain and / or phase. The total power received minimization step includes an annealing step microcanonique.L'invention applies to t el eCommunications satellite at t el ephonie cell or the neural networks WLAN.

Enablers for Smart Cities, 2016

[Proceedings] 1991 IEEE International Joint Conference on Neural Networks, 1991

The authors cast the feature grouping and figure/ground discrimination problems into a combinator... more The authors cast the feature grouping and figure/ground discrimination problems into a combinatorial optimization problem. The cost function for which a global minimum is to be sought is of the same mathematical structure as the energy function of a spin-glass system or of a recursive neural network. Hence, the global minimization problem can be solved by mean field annealing (MFA). The experimental results obtained with an MFA asynchronous implementation show that the method advocated is well suited to solve the problem

Procedings of the British Machine Vision Conference 1990, 1990

In this paper we suggest an optimization approach to visual matching. We assume that the informat... more In this paper we suggest an optimization approach to visual matching. We assume that the information available in an image may be conveniently represented symbolically in a relational graph. We concentrate on the problem of matching two such graphs. First we derive a cost function associated with graph matching and more precisely associated with relational subgraph isomorphism and with maximum relational subgraph matching. This cost function is well suited for optimization methods such as simulated annealing. We show how the graph matching problem is easily cast into a simulated annealing algorithm. Finally we show some preliminary experimental results and discuss the utility of this graph matching method in computer vision in general.

Dinet/Information Retrieval in Digital Environments, 2014

IEEE Transactions on Pattern Analysis and Machine Intelligence, 1993

e & i Elektrotechnik und Informationstechnik, 2010

Zusammenfassung Weltweite Breitband-Mobilkommunikation trägt immer mehr zum globalen Energieverb... more Zusammenfassung Weltweite Breitband-Mobilkommunikation trägt immer mehr zum globalen Energieverbrauch bei. Dieser Aufsatz untersucht die wichtige Problematik des Energiesparens durch Steigerung von Energieeffizienz mobiler Breitbandsysteme. Dies führt letztendlich zur Reduzierung des CO 2-Ausstoßes. Es wird zunächst eine ganzheitliche Systemansicht vorgelegt, welche verhindern soll, dass Ansätze zur Steigerung der Energieeffizienz die Energieeffizienz oder die Dienstleistung anderer Teile des Systems schmälern. Danach wird ein

Page 1. ORGANISATION General Co-Chairs Marimuthu Palaniswami, University of Melbourne, Australia ... more Page 1. ORGANISATION General Co-Chairs Marimuthu Palaniswami, University of Melbourne, Australia Peter Corke, Queensland University of Technology, Australia Slaven Marusic, University of Melbourne, Australia Symposium and Workshop Chairs Symposium on Sensor Networks Salil Kanhere, University of New South Wales, Australia Athanassios Boulis, NICTA, Australia Symposium on Advances in Optimization for Distributed Control, Information ...

This paper presents an overview of the European IST project MATRICE (MC-CDMA Transmission Techniq... more This paper presents an overview of the European IST project MATRICE (MC-CDMA Transmission Techniques for Integrated Broadband Cellular Systems, IST-2001-3220), describing its tasks, goals and preliminary achievements. The main focus of the MATRICE project is the definition of a new air-interface for future cellular mobile radio systems based on Multicarrier-CDMA modulation techniques and the study of its key building blocks like receiver algorithms and flexible TX components. The nine European partners participating ...

The transition from the 2 nd generation of mobile cellular networks to the 3 rd one was motivated... more The transition from the 2 nd generation of mobile cellular networks to the 3 rd one was motivated by the introduction of mobile multimedia services. It can be already anticipated that the demand for much higher bit rate services with high mobility will increase rapidly. This kind of demand requires a new air interface technology since current systems offer high bit rate for low mobility or low bit rate for high mobility. In order to satisfy these new services requirements, MATRICE project specifies and evaluates innovative solutions for a broadband component of Beyond 3 rd Generation (B3G) systems supporting bit rates up to 100 Mbps, mobility up to 300km/h and high Quality of Service (QoS) for both indoor and outdoor environments. The solution proposed within MATRICE project will be based on MC-CDMA, advanced features of the physical layer such as multi-user detection, beamforming and MIMO techniques, and sophisticated radio resource management algorithms. The aim of the present del...

Cette these traite de la resolution de problemes d'optimisation tres complexes (np. Complets)... more Cette these traite de la resolution de problemes d'optimisation tres complexes (np. Complets) par le biais de l'etude des systemes complexes artificiels qui imitent les systemes physiques et qui sont simules avec des reseaux neuromimetiques. La solution optimale est identifiee a un etat fondamental d'un systeme physique. Plusieurs techniques neuronales sont presentees pour approcher la solution optimale. Elles utilisent soit l'analyse canonique, soit l'analyse microcanonique, definies en mecanique statistique. Parmi ces methodes, nous presentons l'utilisation des reseaux de hopfield analogiques, le recuit simule, l'approximation du champ moyen, le recuit en champ moyen et le recuit microcanonique. Elles sont particulierement bien adaptees aux problemes de graphes qui traitent de coupure et de connectivite, de morphisme et d'extraction de sous-graphes possedant des proprietes extremales. Dans ce cadre, les problemes de k-partitionnement de graphe, de m...

SIGLEAvailable at INIST (FR), Document Supply Service, under shelf-number : 22495, issue : a.1991... more SIGLEAvailable at INIST (FR), Document Supply Service, under shelf-number : 22495, issue : a.1991 n.73 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

This invention relates to a method for reconstructing a characteristic related to a physical phen... more This invention relates to a method for reconstructing a characteristic related to a physical phenomenon from scattered measurements comprising the steps of: - preparation of a reconstruction model developed field from a priori knowledge about the phenomenon studied to obtain an analytic function; - realization of a field of the mesh; - reconstruction of the field by optimizing the analytical function, and in which the reconstruction model takes into account the physical characteristics of the phenomenon.

This article focuses on the application of combinatorial methods to the optimization of pseudo-ra... more This article focuses on the application of combinatorial methods to the optimization of pseudo-random sequences for spread spectrum communications. This approach enables us to take into account for the first time odd correlations. The families of obtained sequences, in the binary and quaternary cases, are compared with those of the litterature.

on the previous events on advanced wireless technologies, wireless networking, and wireless appli... more on the previous events on advanced wireless technologies, wireless networking, and wireless applications. ICWMC 2012 addressed wireless related topics concerning integration of latest technological advances to realize mobile and ubiquitous service environments for advanced applications and services in wireless networks. Mobility and wireless, special services and lessons learnt from particular deployment complemented the traditional wireless topics. We take here the opportunity to warmly thank all the members of the ICWMC 2012 Technical Program Committee, as well as the numerous reviewers. The creation of such a high quality conference program would not have been possible without their involvement. We also kindly thank all the authors who dedicated much of their time and efforts to contribute to ICWMC 2012. We truly believe that, thanks to all these efforts, the final conference program consisted of top quality contributions. Also, this event could not have been a reality without th...

A method of transmitting spread spectrum by direct sequence, with generation and optimization seq... more A method of transmitting spread spectrum by direct sequence, with generation and optimization sequence. According to the invention, it produces a lot of random sequences and these sequences are optimized by a combinatorial process to minimize the residual noise. Application transmissions.

The Future Internet will be an inherently cyber-physical system, providing native support for man... more The Future Internet will be an inherently cyber-physical system, providing native support for many forms of real world interaction, including sensing and actuation. This will place unique requirements on its architectural design, as a vastly heterogeneous set of stake holders tussling to promote business and social opportunities, while addressing technical and incentive barriers. This paper describes a set of high level architectural models which can be used for including sensing and actuation services into the Future Internet. As such architectures can only be implemented through the cooperation of a wide variety of business actors, the ultimate design will not be under the control of any single entity. Tussles will be played out during the lifecycle of the system, which will cause an evolution of the approach to specific functions. We therefore apply an analysis of these tussles to derive architectural boundaries and interfaces which will allow the system to evolve through these t...

The invention relates to a method ed e zeros formation by a neural network of antennas (A1, A2, .... more The invention relates to a method ed e zeros formation by a neural network of antennas (A1, A2, ..., AM). Each antenna (A j) is associated ee with phase information and gain information. The process ed e comprises, for each antenna, a phase quantization step and a gain quantizing step to de ne least significant bit phase and low weight gain bits, and a step of minimizing the total power received by the neural network of antennas (A1, A2, ..., AM) by modification of at least one least significant bit of gain and / or phase. The total power received minimization step includes an annealing step microcanonique.L'invention applies to t el eCommunications satellite at t el ephonie cell or the neural networks WLAN.

Enablers for Smart Cities, 2016

[Proceedings] 1991 IEEE International Joint Conference on Neural Networks, 1991

The authors cast the feature grouping and figure/ground discrimination problems into a combinator... more The authors cast the feature grouping and figure/ground discrimination problems into a combinatorial optimization problem. The cost function for which a global minimum is to be sought is of the same mathematical structure as the energy function of a spin-glass system or of a recursive neural network. Hence, the global minimization problem can be solved by mean field annealing (MFA). The experimental results obtained with an MFA asynchronous implementation show that the method advocated is well suited to solve the problem

Procedings of the British Machine Vision Conference 1990, 1990

In this paper we suggest an optimization approach to visual matching. We assume that the informat... more In this paper we suggest an optimization approach to visual matching. We assume that the information available in an image may be conveniently represented symbolically in a relational graph. We concentrate on the problem of matching two such graphs. First we derive a cost function associated with graph matching and more precisely associated with relational subgraph isomorphism and with maximum relational subgraph matching. This cost function is well suited for optimization methods such as simulated annealing. We show how the graph matching problem is easily cast into a simulated annealing algorithm. Finally we show some preliminary experimental results and discuss the utility of this graph matching method in computer vision in general.

Dinet/Information Retrieval in Digital Environments, 2014

IEEE Transactions on Pattern Analysis and Machine Intelligence, 1993

e & i Elektrotechnik und Informationstechnik, 2010

Zusammenfassung Weltweite Breitband-Mobilkommunikation trägt immer mehr zum globalen Energieverb... more Zusammenfassung Weltweite Breitband-Mobilkommunikation trägt immer mehr zum globalen Energieverbrauch bei. Dieser Aufsatz untersucht die wichtige Problematik des Energiesparens durch Steigerung von Energieeffizienz mobiler Breitbandsysteme. Dies führt letztendlich zur Reduzierung des CO 2-Ausstoßes. Es wird zunächst eine ganzheitliche Systemansicht vorgelegt, welche verhindern soll, dass Ansätze zur Steigerung der Energieeffizienz die Energieeffizienz oder die Dienstleistung anderer Teile des Systems schmälern. Danach wird ein

Page 1. ORGANISATION General Co-Chairs Marimuthu Palaniswami, University of Melbourne, Australia ... more Page 1. ORGANISATION General Co-Chairs Marimuthu Palaniswami, University of Melbourne, Australia Peter Corke, Queensland University of Technology, Australia Slaven Marusic, University of Melbourne, Australia Symposium and Workshop Chairs Symposium on Sensor Networks Salil Kanhere, University of New South Wales, Australia Athanassios Boulis, NICTA, Australia Symposium on Advances in Optimization for Distributed Control, Information ...

This paper presents an overview of the European IST project MATRICE (MC-CDMA Transmission Techniq... more This paper presents an overview of the European IST project MATRICE (MC-CDMA Transmission Techniques for Integrated Broadband Cellular Systems, IST-2001-3220), describing its tasks, goals and preliminary achievements. The main focus of the MATRICE project is the definition of a new air-interface for future cellular mobile radio systems based on Multicarrier-CDMA modulation techniques and the study of its key building blocks like receiver algorithms and flexible TX components. The nine European partners participating ...