Pub Date : 2011-10-27DOI: 10.1109/ITST.2011.6060123
M. Kassab, C. Gransart, M. Wahl, M. Berbineau, J. Ehrlich
The Software Defined Radio (SDR) is a technology that enables to run several radio waveforms on the same hardware terminal. In this paper, we evaluate the benefits of using several communication technologies, based on SDR hardware, in automotive cooperative systems. We propose to integrate to the vehicles a SDR hardware supporting IEEE 802.11 and DVB-T technologies. We study the behaviors of cooperative systems in a realistic environment. We investigate, based on simulation experiments, the performances of applications integrated in the cooperative system when this system is based on multiple wireless technologies.
{"title":"Simulation of automotive cooperative system based on Software Defined Radio (SDR)","authors":"M. Kassab, C. Gransart, M. Wahl, M. Berbineau, J. Ehrlich","doi":"10.1109/ITST.2011.6060123","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060123","url":null,"abstract":"The Software Defined Radio (SDR) is a technology that enables to run several radio waveforms on the same hardware terminal. In this paper, we evaluate the benefits of using several communication technologies, based on SDR hardware, in automotive cooperative systems. We propose to integrate to the vehicles a SDR hardware supporting IEEE 802.11 and DVB-T technologies. We study the behaviors of cooperative systems in a realistic environment. We investigate, based on simulation experiments, the performances of applications integrated in the cooperative system when this system is based on multiple wireless technologies.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"518 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116248909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-10-27DOI: 10.1109/ITST.2011.6060046
I. Fatani, Y. Cocheril, F. Coudoux, M. Zwingelstein-Colin, M. Gharbi, C. Nsiala-Nzza, M. Berbineau
This paper proposes a new adaptive modulation (AM) scheme for closed-loop MIMO transmission over wireless correlated channels. Two correlation-based channel models are considered to illustrate the interest of the proposed solution in realistic environments representative of transportation systems. Several simulation results for different transmission scenarios are presented and discussed. It is shown that the proposed AM approach outperforms several precoding schemes and provides full diversity order.
{"title":"An improved adaptive modulation scheme for closed-loop MIMO transmission in tunnel environments","authors":"I. Fatani, Y. Cocheril, F. Coudoux, M. Zwingelstein-Colin, M. Gharbi, C. Nsiala-Nzza, M. Berbineau","doi":"10.1109/ITST.2011.6060046","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060046","url":null,"abstract":"This paper proposes a new adaptive modulation (AM) scheme for closed-loop MIMO transmission over wireless correlated channels. Two correlation-based channel models are considered to illustrate the interest of the proposed solution in realistic environments representative of transportation systems. Several simulation results for different transmission scenarios are presented and discussed. It is shown that the proposed AM approach outperforms several precoding schemes and provides full diversity order.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116766557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-10-27DOI: 10.1109/ITST.2011.6060114
Gérald Arnould, D. Khadraoui, Marcelo Armendáriz, J. C. Burguillo, A. Peleteiro
The WiSafeCar (Wireless Traffic Safety Network Between Cars) project aims at creating a comprehensive wireless communication and service platform targeting vehicular networks, striving to reduce accidents and traffic congestion. Within the frame of this project, a dynamic carpooling transport system was designed, reacting in real time to events and user transport requests. In order to allow this system to integrate seamlessly with other transport modes, but also to encourage users to use carpooling, a clearing service has been implemented to solve the inherent compensation issues. Both the carpooling system and the underlying utility services have been prototyped, using the Netlogo simulator, to prove not only the efficiency of WiSafeCar at reducing the congestion in cities; but also to validate the business models to be implemented and more precisely the clearing algorithm.
{"title":"A transport based clearing system for dynamic carpooling business services","authors":"Gérald Arnould, D. Khadraoui, Marcelo Armendáriz, J. C. Burguillo, A. Peleteiro","doi":"10.1109/ITST.2011.6060114","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060114","url":null,"abstract":"The WiSafeCar (Wireless Traffic Safety Network Between Cars) project aims at creating a comprehensive wireless communication and service platform targeting vehicular networks, striving to reduce accidents and traffic congestion. Within the frame of this project, a dynamic carpooling transport system was designed, reacting in real time to events and user transport requests. In order to allow this system to integrate seamlessly with other transport modes, but also to encourage users to use carpooling, a clearing service has been implemented to solve the inherent compensation issues. Both the carpooling system and the underlying utility services have been prototyped, using the Netlogo simulator, to prove not only the efficiency of WiSafeCar at reducing the congestion in cities; but also to validate the business models to be implemented and more precisely the clearing algorithm.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130354173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-10-27DOI: 10.1109/ITST.2011.6060100
K. Hassan, C. N. Nzeza, R. Gautier, E. Radoi, M. Berbineau, I. Dayoub
The blind interception process of multiple-input multiple-output (MIMO) signals have recently gained more attention. The number of transmitting antennas is an important information for many blind MIMO algorithms. In this paper, several algorithms for blind detection of the number of transmitting antennas are presented. These different algorithms are evaluated and a performance comparison is presented. Spatial correlation is a crucial factor for practical MIMO systems. This paper addresses for the first time the problem of blind detection of the number of transmitting antennas in spatially correlated MIMO systems.
{"title":"Blind detection of the number of transmitting antennas for spatially-correlated MIMO systems","authors":"K. Hassan, C. N. Nzeza, R. Gautier, E. Radoi, M. Berbineau, I. Dayoub","doi":"10.1109/ITST.2011.6060100","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060100","url":null,"abstract":"The blind interception process of multiple-input multiple-output (MIMO) signals have recently gained more attention. The number of transmitting antennas is an important information for many blind MIMO algorithms. In this paper, several algorithms for blind detection of the number of transmitting antennas are presented. These different algorithms are evaluated and a performance comparison is presented. Spatial correlation is a crucial factor for practical MIMO systems. This paper addresses for the first time the problem of blind detection of the number of transmitting antennas in spatially correlated MIMO systems.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"38 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128514981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-10-27DOI: 10.1109/ITST.2011.6060152
S. Busanelli, G. Ferrari, V. Giorgio, Nicola Iotti
In recent years, Vehicular Ad-hoc NETworks (VANETs) have experienced an intense development, driven by academia, industry, and public authorities. On the basis of this, it is reasonable to expect that VANETs will finally hit the market in the near future. In order to reach commercial success, VANETs must effectively operate also during the first years of deployment, when the market penetration rate will be unavoidably low and, consequently, only a small number of suitably equipped vehicles (VANET-enabled) will be present in the roads. Among the possible strategies to face the initial sparse VANET scenarios, the deployment of an auxiliary network constituted by fixed Road Side Units (RSUs), either Dissemination Points (DPs) or relays, is certainly a promising one. In order to maximize the benefits offered by this support infrastructure, the placement of RSUs needs to be carefully studied. In this work, we analyze, by means of numerical simulations, the performance of an application that leverages on a finite number of DPs for disseminating information to the transiting vehicles. The positions of the DPs are determined through a recently proposed family of optimal placement algorithms, on the basis of properly generated (through simulations) vehicular mobility traces. The analysis is carried out considering two realistic urban scenarios. In both cases, the performance improvement brought by the use of multi-hop broadcast protocols, with respect to classical single-hop communications with DPs, is investigated.
{"title":"Comparative investigation of single-hop and multi-hop broadcast strategies for information dissemination in VANETs","authors":"S. Busanelli, G. Ferrari, V. Giorgio, Nicola Iotti","doi":"10.1109/ITST.2011.6060152","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060152","url":null,"abstract":"In recent years, Vehicular Ad-hoc NETworks (VANETs) have experienced an intense development, driven by academia, industry, and public authorities. On the basis of this, it is reasonable to expect that VANETs will finally hit the market in the near future. In order to reach commercial success, VANETs must effectively operate also during the first years of deployment, when the market penetration rate will be unavoidably low and, consequently, only a small number of suitably equipped vehicles (VANET-enabled) will be present in the roads. Among the possible strategies to face the initial sparse VANET scenarios, the deployment of an auxiliary network constituted by fixed Road Side Units (RSUs), either Dissemination Points (DPs) or relays, is certainly a promising one. In order to maximize the benefits offered by this support infrastructure, the placement of RSUs needs to be carefully studied. In this work, we analyze, by means of numerical simulations, the performance of an application that leverages on a finite number of DPs for disseminating information to the transiting vehicles. The positions of the DPs are determined through a recently proposed family of optimal placement algorithms, on the basis of properly generated (through simulations) vehicular mobility traces. The analysis is carried out considering two realistic urban scenarios. In both cases, the performance improvement brought by the use of multi-hop broadcast protocols, with respect to classical single-hop communications with DPs, is investigated.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122079973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-10-27DOI: 10.1109/ITST.2011.6060139
P. Tsai, Ching-Hsien Wang
In this paper, we propose a subgradient optimization method for pedestrian localization based on received signal strength in wireless network. The objective function of weighted least-squares estimation is adopted, which shows good convexity and has immunity to shadowing effect. We also approximate the subgradient of the objective function by a recursive form so that it can be implemented in a decentralized manner within each sensing node. A variable step size is proposed to take into consideration both the subgradient and minimum adjustment to accelerate convergence. Furthermore, the convergence analysis is also given to show the feasibility of our design for the step size. From simulation results, we can see the proposed algorithm has better accuracy and convergence rate than the conventional decentralized algorithms to localize a stationary or moving target in wireless network.
{"title":"Distributed algorithm of subgradient optimization for localization based on received signal strength in wireless network","authors":"P. Tsai, Ching-Hsien Wang","doi":"10.1109/ITST.2011.6060139","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060139","url":null,"abstract":"In this paper, we propose a subgradient optimization method for pedestrian localization based on received signal strength in wireless network. The objective function of weighted least-squares estimation is adopted, which shows good convexity and has immunity to shadowing effect. We also approximate the subgradient of the objective function by a recursive form so that it can be implemented in a decentralized manner within each sensing node. A variable step size is proposed to take into consideration both the subgradient and minimum adjustment to accelerate convergence. Furthermore, the convergence analysis is also given to show the feasibility of our design for the step size. From simulation results, we can see the proposed algorithm has better accuracy and convergence rate than the conventional decentralized algorithms to localize a stationary or moving target in wireless network.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122158581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-10-27DOI: 10.1109/ITST.2011.6060092
Jargalsaikhan Iveel, S. David
Three dimensional scene reconstruction, sometimes referred as view synthesis, is a problem in the area of Stereo Vision, which is the most widely used method for gathering depth information from 2D scenes. Stereo vision finds many applications in automated systems such robotics, tracking object in 3D space and constructing a 3D spatial model of a scene. There are many human-machine control applications, such vision based remote control system which exploits stereo vision to control the machine in a touch-free environment. In this paper, we present a new stereo vision matching algorithm using an adaptive support window. In many area based algorithms, the selection and computation of the size and shape of the window is the most crucial factor for obtaining high quality disparity map. We developed an adaptive support window based stereo matching using similar color regions selected by the seed growing algorithm. The proposed approach is tested on Middlebury stereo images and results were promising.
{"title":"A novel adaptive support window based stereo matching algorithm for 3D reconstruction from 2D images","authors":"Jargalsaikhan Iveel, S. David","doi":"10.1109/ITST.2011.6060092","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060092","url":null,"abstract":"Three dimensional scene reconstruction, sometimes referred as view synthesis, is a problem in the area of Stereo Vision, which is the most widely used method for gathering depth information from 2D scenes. Stereo vision finds many applications in automated systems such robotics, tracking object in 3D space and constructing a 3D spatial model of a scene. There are many human-machine control applications, such vision based remote control system which exploits stereo vision to control the machine in a touch-free environment. In this paper, we present a new stereo vision matching algorithm using an adaptive support window. In many area based algorithms, the selection and computation of the size and shape of the window is the most crucial factor for obtaining high quality disparity map. We developed an adaptive support window based stereo matching using similar color regions selected by the seed growing algorithm. The proposed approach is tested on Middlebury stereo images and results were promising.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122903513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-10-27DOI: 10.1109/ITST.2011.6060065
W. Hahn
This paper discusses the 3GPP Evolved Packet Core (EPC) as a deployment of a distributed data plane architecture. Distributed GWs in connection with user mobility may result in the need to optimize data routing by GW relocation. It is proposed to include the GWs itself in the decision on GW relocation what is currently done in the control plane node (mobility management entity) only. Proposals are made to allow the relocation also for active mode devices (user activity detection), to detect the occurrence of a non optimal routing situation and to detect situations where a relocation should be suppressed to avoid particularly poor user experience. These improvements are compared with other solutions.
{"title":"3GPP Evolved Packet Core support for distributed mobility anchors: Control enhancements for GW relocation","authors":"W. Hahn","doi":"10.1109/ITST.2011.6060065","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060065","url":null,"abstract":"This paper discusses the 3GPP Evolved Packet Core (EPC) as a deployment of a distributed data plane architecture. Distributed GWs in connection with user mobility may result in the need to optimize data routing by GW relocation. It is proposed to include the GWs itself in the decision on GW relocation what is currently done in the control plane node (mobility management entity) only. Proposals are made to allow the relocation also for active mode devices (user activity detection), to detect the occurrence of a non optimal routing situation and to detect situations where a relocation should be suppressed to avoid particularly poor user experience. These improvements are compared with other solutions.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129268805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-10-27DOI: 10.1109/ITST.2011.6060094
H. Farhat, E. Bazin, S. Haese, G. E. Zein
In this paper, we present an infrared thermal image acquisition system developed for intra-vehicle applications. This system is based on an uncooled microbolometer sensor matrix. First, we design an electronic board to control the sensor. A special lens is developed with a wide field of view. Then, the image acquisition system is developed on a FPGA (Field-Programmable Gate Array) based soft-core microcontroller. We realize the system calibration using controlled temperature surface. We implement the calibration algorithm and present calibration results. Measurement campaign is conducted in a vehicle. Measurement results show the possibility to cover all the passenger's in the vehicle and to measure their temperature.
{"title":"An infrared thermal image acquisition system for intra-vehicle applications","authors":"H. Farhat, E. Bazin, S. Haese, G. E. Zein","doi":"10.1109/ITST.2011.6060094","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060094","url":null,"abstract":"In this paper, we present an infrared thermal image acquisition system developed for intra-vehicle applications. This system is based on an uncooled microbolometer sensor matrix. First, we design an electronic board to control the sensor. A special lens is developed with a wide field of view. Then, the image acquisition system is developed on a FPGA (Field-Programmable Gate Array) based soft-core microcontroller. We realize the system calibration using controlled temperature surface. We implement the calibration algorithm and present calibration results. Measurement campaign is conducted in a vehicle. Measurement results show the possibility to cover all the passenger's in the vehicle and to measure their temperature.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132042029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-10-27DOI: 10.1109/ITST.2011.6060072
A. Galov, A. Moschevikin, R. Voronov
In most cases indoor local positioning algorithms are not effective enough. RSS-based methods are very sensitive to variations in physical environment dependent on relative positions of furniture, doors, human bodies, etc. The results of ToF-based ranging in closed areas always include additional NLOS-component. A method of combination of both RSS and ToF approaches is described. Results of conducted indoor experiments confirmed that the accuracy of position calculation significantly increased.
{"title":"Combination of RSS localization and ToF ranging for increasing positioning accuracy indoors","authors":"A. Galov, A. Moschevikin, R. Voronov","doi":"10.1109/ITST.2011.6060072","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060072","url":null,"abstract":"In most cases indoor local positioning algorithms are not effective enough. RSS-based methods are very sensitive to variations in physical environment dependent on relative positions of furniture, doors, human bodies, etc. The results of ToF-based ranging in closed areas always include additional NLOS-component. A method of combination of both RSS and ToF approaches is described. Results of conducted indoor experiments confirmed that the accuracy of position calculation significantly increased.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132373751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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