Pub Date : 2011-10-27DOI: 10.1109/ITST.2011.6060061
W. Vandenberghe, I. Moerman, P. Demeester
Last years, a lot of research was performed focusing on cooperative road safety applications such as nearby traffic jam warning, approaching emergency vehicle warning, road obstacle warning, wrong way driver warning, etc. The high cost of the required in-vehicle systems however seems to obstruct end-user adoption. An alternative could be to utilize smartphones for vehicular ad hoc networking. From a business point of view this seems attractive because smartphones already enjoy a successful user adoption, and they provide most of the hardware required for cooperative road safety applications. However, from a technical point of view there is one aspect of the smartphone approach that could prove to be an insurmountable problem: these phones are equipped with standard IEEE 802.11a/b/g (Wi-Fi) wireless interfaces, instead of the automotive variant IEEE 802.11p. In this paper, a measurement campaign is presented that investigates the technical feasibility of the smartphone approach.
{"title":"On the feasibility of utilizing smartphones for vehicular ad hoc networking","authors":"W. Vandenberghe, I. Moerman, P. Demeester","doi":"10.1109/ITST.2011.6060061","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060061","url":null,"abstract":"Last years, a lot of research was performed focusing on cooperative road safety applications such as nearby traffic jam warning, approaching emergency vehicle warning, road obstacle warning, wrong way driver warning, etc. The high cost of the required in-vehicle systems however seems to obstruct end-user adoption. An alternative could be to utilize smartphones for vehicular ad hoc networking. From a business point of view this seems attractive because smartphones already enjoy a successful user adoption, and they provide most of the hardware required for cooperative road safety applications. However, from a technical point of view there is one aspect of the smartphone approach that could prove to be an insurmountable problem: these phones are equipped with standard IEEE 802.11a/b/g (Wi-Fi) wireless interfaces, instead of the automotive variant IEEE 802.11p. In this paper, a measurement campaign is presented that investigates the technical feasibility of the smartphone approach.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"30 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":"131283196","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.2011.6060106
John Dornberg, T. Lutz
E-Mobility is gaining more and more attention and importance not only for researchers but for all community members. Therefore the German government presently supports several projects on E-Mobility with a total funding of about 500 million Euros. Preliminary results of one of these projects are presented in this paper. The main focus is a field test on vehicle to grid communications, ICT-Solutions and business models. To support a vehicle to grid communication a roaming concept was developed. An ICT-Solution called Energy Name Service (ENS), enabling the identification and providing the functionality to retrieve additional sources of information on vehicles to grid is specified below together with two new E-Mobility-specific ID types. Preliminary results of an E-Mobility car-pooling field test using an ICT-System with an intelligent control prediction algorithm show important factors for future E-Mobility business models. They are currently under development in order to help accelerating market launch.
{"title":"Selected findings from a German lighthouse project on electric mobility: A summary of outcomes in the field of vehicle to grid communication, ICT- and business model solutions","authors":"John Dornberg, T. Lutz","doi":"10.1109/ITST.2011.6060106","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060106","url":null,"abstract":"E-Mobility is gaining more and more attention and importance not only for researchers but for all community members. Therefore the German government presently supports several projects on E-Mobility with a total funding of about 500 million Euros. Preliminary results of one of these projects are presented in this paper. The main focus is a field test on vehicle to grid communications, ICT-Solutions and business models. To support a vehicle to grid communication a roaming concept was developed. An ICT-Solution called Energy Name Service (ENS), enabling the identification and providing the functionality to retrieve additional sources of information on vehicles to grid is specified below together with two new E-Mobility-specific ID types. Preliminary results of an E-Mobility car-pooling field test using an ICT-System with an intelligent control prediction algorithm show important factors for future E-Mobility business models. They are currently under development in order to help accelerating market launch.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"67 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":"130471310","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.2011.6060070
A. Botchkovski, N. Mikhaylov, S. Pospelov
MStar Semiconductor (Taiwan) completed design & engineering of a combined GPS/GLONASS receiver for consumer market. The purpose of this paper is to inform the GNSS community about this development; in particular, about specific features and architecture of the receiver. First results of preliminary GPS/GLONASS receiver drive tests in a land vehicle under restricted satellite visibility conditions are also presented.
{"title":"GPS/GLONASS receiver in land vehicle: Expectations and reality","authors":"A. Botchkovski, N. Mikhaylov, S. Pospelov","doi":"10.1109/ITST.2011.6060070","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060070","url":null,"abstract":"MStar Semiconductor (Taiwan) completed design & engineering of a combined GPS/GLONASS receiver for consumer market. The purpose of this paper is to inform the GNSS community about this development; in particular, about specific features and architecture of the receiver. First results of preliminary GPS/GLONASS receiver drive tests in a land vehicle under restricted satellite visibility conditions are also presented.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"23 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":"130865689","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.2011.6060102
Ayman Assra, W. Hamouda, I. Dayoub, M. Berbineau
In this paper, we introduce an iterative joint channel estimation and data detection technique based on the expectation-maximization (EM) algorithm for multiple-input multiple-output (MIMO) code-division multiple-access (CDMA) systems over correlated fading channels. Based on the Kronecker model, we study the effect of channel correlation on the space-time (ST) EM-based joint detection and estimation (JDE) receiver assuming that there is no prior knowledge of channel correlation at the receiver. Then, we derive a new ST EM-based JDE receiver, which adapts the correlation between different MIMO channel coefficients. Different from the uncorrelated MIMO channel, the optimized weight coefficient are derived jointly based on the minimum mean-square error (MMSE) criterion. Considering fixed correlation channel matrix, our results show that our proposed receiver attains the diversity gain of uncorrelated MIMO channels. In addition, the effect of channel correlation is only interpreted as signal-to-noise-ratio (SNR) loss, especially in high receive correlation scenarios.
{"title":"Iterative joint channel estimation and data detection for MIMO-CDMA systems over correlated fading channels","authors":"Ayman Assra, W. Hamouda, I. Dayoub, M. Berbineau","doi":"10.1109/ITST.2011.6060102","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060102","url":null,"abstract":"In this paper, we introduce an iterative joint channel estimation and data detection technique based on the expectation-maximization (EM) algorithm for multiple-input multiple-output (MIMO) code-division multiple-access (CDMA) systems over correlated fading channels. Based on the Kronecker model, we study the effect of channel correlation on the space-time (ST) EM-based joint detection and estimation (JDE) receiver assuming that there is no prior knowledge of channel correlation at the receiver. Then, we derive a new ST EM-based JDE receiver, which adapts the correlation between different MIMO channel coefficients. Different from the uncorrelated MIMO channel, the optimized weight coefficient are derived jointly based on the minimum mean-square error (MMSE) criterion. Considering fixed correlation channel matrix, our results show that our proposed receiver attains the diversity gain of uncorrelated MIMO channels. In addition, the effect of channel correlation is only interpreted as signal-to-noise-ratio (SNR) loss, especially in high receive correlation scenarios.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"63 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":"134065912","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.2011.6060105
M. Simonov
Event-driven energy metering brings the possibility to detect and understand the non-unique electrical events. Events, preceding the use of the vehicle, give the anticipatory knowledge relevant to the electrical grid balancing and energy optimization. Author discusses about the anticipatory knowledge exchanged between the stakeholders improving the electric vehicle's integration into smart grid.
{"title":"Mastering cooperation: Electric vehicle and smart grid","authors":"M. Simonov","doi":"10.1109/ITST.2011.6060105","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060105","url":null,"abstract":"Event-driven energy metering brings the possibility to detect and understand the non-unique electrical events. Events, preceding the use of the vehicle, give the anticipatory knowledge relevant to the electrical grid balancing and energy optimization. Author discusses about the anticipatory knowledge exchanged between the stakeholders improving the electric vehicle's integration into smart grid.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"46 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":"134126764","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.2011.6060104
A. Fawaz, Ali Hojaij, Hadi Kobeissi, H. Artail
Organizations are starting to realize the significant value of advertising on mobile devices, and a number of systems have been developed to exploit this opportunity. We propose a system for delivering location and preference-aware advertisements to vehicles and to mobile devices using a novel architecture for preserving privacy. Our model assumes the main adversary is the server distributing the ads trying to identify users and track them. It also considers other peers in the network as potential threats who may disclose information to third parties. When a node wants an ad, it forms a group of nearby nodes seeking ads and willing to cooperate to achieve privacy. Peers combine their interests using a mixing mechanism using an ad-hoc network and send them through a primary peer to the ad server. In this way, preferences are masqueraded to request custom ads which are then distributed by the primary peer. Another mechanism is proposed to implement the billing process without disclosing user identities.
{"title":"Using cooperation among peers and interest mixing to protect privacy in targeted mobile advertisement","authors":"A. Fawaz, Ali Hojaij, Hadi Kobeissi, H. Artail","doi":"10.1109/ITST.2011.6060104","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060104","url":null,"abstract":"Organizations are starting to realize the significant value of advertising on mobile devices, and a number of systems have been developed to exploit this opportunity. We propose a system for delivering location and preference-aware advertisements to vehicles and to mobile devices using a novel architecture for preserving privacy. Our model assumes the main adversary is the server distributing the ads trying to identify users and track them. It also considers other peers in the network as potential threats who may disclose information to third parties. When a node wants an ad, it forms a group of nearby nodes seeking ads and willing to cooperate to achieve privacy. Peers combine their interests using a mixing mechanism using an ad-hoc network and send them through a primary peer to the ad server. In this way, preferences are masqueraded to request custom ads which are then distributed by the primary peer. Another mechanism is proposed to implement the billing process without disclosing user identities.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"159 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":"122070038","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.2011.6060156
T. Mangel, O. Klemp, H. Hartenstein
Inter-vehicle communication promises to prevent accidents by enabling applications such as cross-traffic assistance. This application requires information from vehicles in Non-Line-of-Sight (NLOS) areas due to building at intersection corners. The periodic Cooperative Awareness Messages (CAM) are foreseen to be sent via 5.9 GHz IEEE 802.11p. While it is known that existing micro-cell models might not apply well, validated propagation models for vehicular 5.9 GHz NLOS conditions are still missing. In this paper, we develop a 5.9 GHz NLOS path-loss and fading model based on real-world measurements at a representative selection of intersections in the city of Munich. We show that a) the measurement data can very well be fitted to an analytical model, b) the model incorporates specific geometric aspects in closed-form as well as normally distributed fading in NLOS, and c) the model is of low complexity, thus, could be used in large-scale packet-level simulations. A comparison to existing micro-cell models shows that our model significantly differs.
{"title":"A validated 5.9 GHz Non-Line-of-Sight path-loss and fading model for inter-vehicle communication","authors":"T. Mangel, O. Klemp, H. Hartenstein","doi":"10.1109/ITST.2011.6060156","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060156","url":null,"abstract":"Inter-vehicle communication promises to prevent accidents by enabling applications such as cross-traffic assistance. This application requires information from vehicles in Non-Line-of-Sight (NLOS) areas due to building at intersection corners. The periodic Cooperative Awareness Messages (CAM) are foreseen to be sent via 5.9 GHz IEEE 802.11p. While it is known that existing micro-cell models might not apply well, validated propagation models for vehicular 5.9 GHz NLOS conditions are still missing. In this paper, we develop a 5.9 GHz NLOS path-loss and fading model based on real-world measurements at a representative selection of intersections in the city of Munich. We show that a) the measurement data can very well be fitted to an analytical model, b) the model incorporates specific geometric aspects in closed-form as well as normally distributed fading in NLOS, and c) the model is of low complexity, thus, could be used in large-scale packet-level simulations. A comparison to existing micro-cell models shows that our model significantly differs.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"11 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":"127693182","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.2011.6060049
Yunxin Li, H. Durrant‐Whyte, R. Evans
The conventional adaptive resource allocation schemes for Orthogonal Frequency Division Multiple Access (OFDMA) systems cannot guarantee that the peak power of its time-domain modulated signal shall not exceed the transmitter peak power limit. When such a limit is exceeded, the transmitter creates extra in-band and adjacent-band interferences that were not considered by the conventional resource allocation algorithms, and thus invalidate the optimality of resource allocation. We therefore propose a novel optimization strategy in resource allocation under the peak power constraint. An adaptive iterative resource allocation scheme is developed that maximizes the system throughput and does not create any extra in-band and adjacent-band interferences. In addition a joint scheme of resource allocation and peak power reduction is developed for further throughput improvement.
{"title":"Adaptive resource allocation for OFDMA systems under peak power constraint","authors":"Yunxin Li, H. Durrant‐Whyte, R. Evans","doi":"10.1109/ITST.2011.6060049","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060049","url":null,"abstract":"The conventional adaptive resource allocation schemes for Orthogonal Frequency Division Multiple Access (OFDMA) systems cannot guarantee that the peak power of its time-domain modulated signal shall not exceed the transmitter peak power limit. When such a limit is exceeded, the transmitter creates extra in-band and adjacent-band interferences that were not considered by the conventional resource allocation algorithms, and thus invalidate the optimality of resource allocation. We therefore propose a novel optimization strategy in resource allocation under the peak power constraint. An adaptive iterative resource allocation scheme is developed that maximizes the system throughput and does not create any extra in-band and adjacent-band interferences. In addition a joint scheme of resource allocation and peak power reduction is developed for further throughput improvement.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"58 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":"121495825","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.2011.6060132
N. Debnath, M. Leonardi, M. Ridao, M. V. Mauco, L. Felice, G. Montejano, D. Riesco
MDA is a software development framework where the core is a set of automatic transformations of models. One of these models, the CIM (Computer Independent Model), is used to define the business process model. Though a complete automatic construction of the CIM is not possible, we have proposed the integration of some natural language requirements models and we have defined a strategy to derive a CIM from these models. In this paper, we present an ATL transformation that implements this strategy to obtain a UML class diagram representing a preliminary CIM from requirements models. This transformation fits with MDA approach.
{"title":"An ATL transformation from natural language requirements models to business models of a MDA project","authors":"N. Debnath, M. Leonardi, M. Ridao, M. V. Mauco, L. Felice, G. Montejano, D. Riesco","doi":"10.1109/ITST.2011.6060132","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060132","url":null,"abstract":"MDA is a software development framework where the core is a set of automatic transformations of models. One of these models, the CIM (Computer Independent Model), is used to define the business process model. Though a complete automatic construction of the CIM is not possible, we have proposed the integration of some natural language requirements models and we have defined a strategy to derive a CIM from these models. In this paper, we present an ATL transformation that implements this strategy to obtain a UML class diagram representing a preliminary CIM from requirements models. This transformation fits with MDA approach.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"5 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":"121278754","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.2011.6060121
Sébastien Félix, J. Galtier
In this paper, we focus on time-dependent graphs which seem to be a good way to model transport networks. In the first part, we remind some notations and techniques related to time-dependent graphs. In the second one, we introduce new algorithms to take into account the notion of probability related to paths in order to guarantee travelling times with a certain accuracy. We also discuss different probabilistic models and show the links between them.
{"title":"Shortest paths and probabilities on time-dependent graphs — Applications to transport networks","authors":"Sébastien Félix, J. Galtier","doi":"10.1109/ITST.2011.6060121","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060121","url":null,"abstract":"In this paper, we focus on time-dependent graphs which seem to be a good way to model transport networks. In the first part, we remind some notations and techniques related to time-dependent graphs. In the second one, we introduce new algorithms to take into account the notion of probability related to paths in order to guarantee travelling times with a certain accuracy. We also discuss different probabilistic models and show the links between them.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"23 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":"122129939","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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