Pub Date : 2012-11-01DOI: 10.1109/ITST.2012.6425291
Po-Chiang Lin
In vehicular communications, roadside units are the key components to collect/disseminate information from/to vehicles. In this paper we investigate the roadside unit deployment problem in vehicle-to-infrastructure communications. This problem is formulated as a constrained optimization problem with the objective to minimize the deployment cost subject to the constraints that all service areas should be covered. The roadside unit deployment problem under consideration is a binary integer programming problem. We solve it by the branch and bound method which could effectively reduce the complexity.
{"title":"Optimal roadside unit deployment in vehicle-to-infrastructure communications","authors":"Po-Chiang Lin","doi":"10.1109/ITST.2012.6425291","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425291","url":null,"abstract":"In vehicular communications, roadside units are the key components to collect/disseminate information from/to vehicles. In this paper we investigate the roadside unit deployment problem in vehicle-to-infrastructure communications. This problem is formulated as a constrained optimization problem with the objective to minimize the deployment cost subject to the constraints that all service areas should be covered. The roadside unit deployment problem under consideration is a binary integer programming problem. We solve it by the branch and bound method which could effectively reduce the complexity.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134485848","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 : 2012-11-01DOI: 10.1109/ITST.2012.6425228
M. Fujioka, Masanori Takahashi, Takeshi Matsumura, Chunmeng Wang, Hiroyuki Hirakoba
This paper summarizes the background, set-up and results of natural disaster and emergency vehicle warning field trial executed as part of a national Green ITS project in Japan. We used a commercial mobile network as the communication media and ordinary smartphones as terminals for the trial. We used the technique called “geomessaging” developed by Ericsson to identify those cars in the target area to which warning should be sent. The field trial went well and we could get the results as expected but we also found several technical and practical issues.
{"title":"Field trial of cellular warning for automobiles using geomessaging in Japan","authors":"M. Fujioka, Masanori Takahashi, Takeshi Matsumura, Chunmeng Wang, Hiroyuki Hirakoba","doi":"10.1109/ITST.2012.6425228","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425228","url":null,"abstract":"This paper summarizes the background, set-up and results of natural disaster and emergency vehicle warning field trial executed as part of a national Green ITS project in Japan. We used a commercial mobile network as the communication media and ordinary smartphones as terminals for the trial. We used the technique called “geomessaging” developed by Ericsson to identify those cars in the target area to which warning should be sent. The field trial went well and we could get the results as expected but we also found several technical and practical issues.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133820598","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 : 2012-11-01DOI: 10.1109/ITST.2012.6425162
Chang-Jing Yang, Yung-Fang Chen
This paper discusses the problems and solutions related to the reproduction of color images on displays. We focus on the problems of false contouring and gamut mismatches. A novel system consisting of a post-dithering algorithm and a hybrid gamut mapping algorithm is proposed to deal with the respective problems. The experimental results show that the proposed system mitigates the false contouring and increases the contrast in images.
{"title":"Hybrid gamut mapping and dithering algorithm for image reproduction","authors":"Chang-Jing Yang, Yung-Fang Chen","doi":"10.1109/ITST.2012.6425162","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425162","url":null,"abstract":"This paper discusses the problems and solutions related to the reproduction of color images on displays. We focus on the problems of false contouring and gamut mismatches. A novel system consisting of a post-dithering algorithm and a hybrid gamut mapping algorithm is proposed to deal with the respective problems. The experimental results show that the proposed system mitigates the false contouring and increases the contrast in images.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124723326","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 : 2012-11-01DOI: 10.1109/ITST.2012.6425279
Chung-Ming Huang, Tzu-Hua Lin, Kuan-Cheng Tseng
In this paper, we proposed a novel routing protocol called Geographic Member-Centric Routing (GMR) over a VANET that consists of a platoon of vehicles, which have the same starting point, driving route, and destination point, driving in the highway environment. The goal of GMR is to aggregate 3G/3.5G bandwidth from some vehicles called Helpers to a vehicle called Requester, i.e., it belongs to multiple-source single-destination transmission, to have cooperative video streaming service in the platoon of vehicles. For providing a better cooperative video streaming service in the platoon scenario, we (1) utilized the characteristic of platoon mobility, in which platoon members try to drive with each other as close as possible and (2) proposed a member-centric scheme that routes packets through more stable links between platoon members. We also introduced a concept of flow-merging, using which k-hop nodes would forward packets to 1 or more merge-nodes in (k-1)-hop, to reduce interference and packet collision between multiple flows. According to the simulation results, GMR effectively improves the packet delivery ratio and throughput using our proposed member-centric scheme and flow merging scheme. It also shows that the proposed member-centric routing protocol is more suitable than others for 3G/3.5G bandwidth aggregation in the platoon scenario over VANET.
{"title":"Bandwidth aggregation over VANET using the geographic member-centric routing protocol (GMR)","authors":"Chung-Ming Huang, Tzu-Hua Lin, Kuan-Cheng Tseng","doi":"10.1109/ITST.2012.6425279","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425279","url":null,"abstract":"In this paper, we proposed a novel routing protocol called Geographic Member-Centric Routing (GMR) over a VANET that consists of a platoon of vehicles, which have the same starting point, driving route, and destination point, driving in the highway environment. The goal of GMR is to aggregate 3G/3.5G bandwidth from some vehicles called Helpers to a vehicle called Requester, i.e., it belongs to multiple-source single-destination transmission, to have cooperative video streaming service in the platoon of vehicles. For providing a better cooperative video streaming service in the platoon scenario, we (1) utilized the characteristic of platoon mobility, in which platoon members try to drive with each other as close as possible and (2) proposed a member-centric scheme that routes packets through more stable links between platoon members. We also introduced a concept of flow-merging, using which k-hop nodes would forward packets to 1 or more merge-nodes in (k-1)-hop, to reduce interference and packet collision between multiple flows. According to the simulation results, GMR effectively improves the packet delivery ratio and throughput using our proposed member-centric scheme and flow merging scheme. It also shows that the proposed member-centric routing protocol is more suitable than others for 3G/3.5G bandwidth aggregation in the platoon scenario over VANET.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121790021","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}
With the popularization of telecom/consumer electronics, such as on-board units (OBUs) and personal navigational devices (PNDs), telematics services are becoming more important and practicable in our daily lives. Additionally, when the applications of global positioning system (GPS) are ubiquitous today, OBUs/PNDs can provide people with very convenient location-based services (LBS), plus intelligent transport systems (ITS). To support efficient and effective telecommunications between a huge number of devices and the ITS services, a scalable networking platform is hence demanded. In this paper, we present a high-scalable design to support an open architecture platform for telematics services based on international standards. The proposed core telematics platform (CTP) can optimize the data transmission under linearly increased time complexity by employing a high-scalable architecture design when a large number of devices connect to the application servers. The simulations and experimental results have verified the effectiveness and efficiency of this high-scalable CTP design.
{"title":"A high-scalable core telematics platform design for intelligent transport systems","authors":"Ing-Xiang Chen, Yen-Ching Wu, I-Ching Liao, Yuan-Ying Hsu","doi":"10.1109/ITST.2012.6425209","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425209","url":null,"abstract":"With the popularization of telecom/consumer electronics, such as on-board units (OBUs) and personal navigational devices (PNDs), telematics services are becoming more important and practicable in our daily lives. Additionally, when the applications of global positioning system (GPS) are ubiquitous today, OBUs/PNDs can provide people with very convenient location-based services (LBS), plus intelligent transport systems (ITS). To support efficient and effective telecommunications between a huge number of devices and the ITS services, a scalable networking platform is hence demanded. In this paper, we present a high-scalable design to support an open architecture platform for telematics services based on international standards. The proposed core telematics platform (CTP) can optimize the data transmission under linearly increased time complexity by employing a high-scalable architecture design when a large number of devices connect to the application servers. The simulations and experimental results have verified the effectiveness and efficiency of this high-scalable CTP design.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122640755","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 : 2012-11-01DOI: 10.1109/ITST.2012.6425170
A. Paul, Nischit Bharadwaj, Arjun S. Bhat, Sameera Shroff, Venkatesh Seenanna, T. Sitharam
The following paper documents the development of an RFID based system that alerts vehicle drivers about approaching road oddities at an optimum distance before encountering them. The objective is to design a wireless system that delivers road signs (and other road-related information) to the commuter inside his/her vehicle visually and aurally, at an appropriate distance before encountering the corresponding road aberrations. The final aim is to bring about a change in the current road safety paradigm by providing a more efficient and ergonomic electronic alternative to static road signs. In addition to reducing dependency on road signs, the device will also aid in averting accidents and traffic jams, and in better implementing traffic law and order.
{"title":"Design and prototype of an in-vehicle road sign delivery system using RFID","authors":"A. Paul, Nischit Bharadwaj, Arjun S. Bhat, Sameera Shroff, Venkatesh Seenanna, T. Sitharam","doi":"10.1109/ITST.2012.6425170","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425170","url":null,"abstract":"The following paper documents the development of an RFID based system that alerts vehicle drivers about approaching road oddities at an optimum distance before encountering them. The objective is to design a wireless system that delivers road signs (and other road-related information) to the commuter inside his/her vehicle visually and aurally, at an appropriate distance before encountering the corresponding road aberrations. The final aim is to bring about a change in the current road safety paradigm by providing a more efficient and ergonomic electronic alternative to static road signs. In addition to reducing dependency on road signs, the device will also aid in averting accidents and traffic jams, and in better implementing traffic law and order.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125280459","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 : 2012-11-01DOI: 10.1109/ITST.2012.6425240
Che-Cheng Chang, Jichiang Tsai, Shi-Jia Pei
With the aging of the population, the development of automotive technology has become increasingly important for preventing car accident caused by senior drivers. As a basic research of driver assistance system for senior drivers, we propose a novel control design method for steering support. In this method, we consider the stability and limitation of a system, so that senior drivers can driver more safely and comfortably. In the context, we first use a particle swarm optimization (PSO) based method to search the optimal feedback gain under constraints for achieving tracking control. Moreover, to reduce the convergence time further, the particle swarm optimization algorithm is combined with quantum computing for the purpose. Simulation results also indicate that the proposed feedback controller based on the quantum particle swarm optimization (QPSO) is capable of providing satisfactory computational performance for the trajectory tracking and stabilization.
{"title":"A quantum PSO algorithm for feedback control of semi-autonomous driver assistance systems","authors":"Che-Cheng Chang, Jichiang Tsai, Shi-Jia Pei","doi":"10.1109/ITST.2012.6425240","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425240","url":null,"abstract":"With the aging of the population, the development of automotive technology has become increasingly important for preventing car accident caused by senior drivers. As a basic research of driver assistance system for senior drivers, we propose a novel control design method for steering support. In this method, we consider the stability and limitation of a system, so that senior drivers can driver more safely and comfortably. In the context, we first use a particle swarm optimization (PSO) based method to search the optimal feedback gain under constraints for achieving tracking control. Moreover, to reduce the convergence time further, the particle swarm optimization algorithm is combined with quantum computing for the purpose. Simulation results also indicate that the proposed feedback controller based on the quantum particle swarm optimization (QPSO) is capable of providing satisfactory computational performance for the trajectory tracking and stabilization.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129964491","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 : 2012-11-01DOI: 10.1109/ITST.2012.6425216
Man Li, Bowen Du, Jian Huang
While Automated Fare Collection System is widely used in many cities all over the world, large amount of swiping card data has been recorded. By using the data, this paper proposed a novel method to recognize passenger flow direction to understand the dynamics of the residents' daily mobility patterns in urban city, which contributes to the planning and management of urban facilities and services. The method classifies subway stations into three kinds based on the land properties around the station and recognizes the passenger flow directions in peak hours. In the final part of paper, the travel patterns in Beijing are recognized, along with a further analysis.
{"title":"Travel patterns analysis of urban residents using Automated Fare Collection System","authors":"Man Li, Bowen Du, Jian Huang","doi":"10.1109/ITST.2012.6425216","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425216","url":null,"abstract":"While Automated Fare Collection System is widely used in many cities all over the world, large amount of swiping card data has been recorded. By using the data, this paper proposed a novel method to recognize passenger flow direction to understand the dynamics of the residents' daily mobility patterns in urban city, which contributes to the planning and management of urban facilities and services. The method classifies subway stations into three kinds based on the land properties around the station and recognizes the passenger flow directions in peak hours. In the final part of paper, the travel patterns in Beijing are recognized, along with a further analysis.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128430408","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 : 2012-11-01DOI: 10.1109/ITST.2012.6425260
J. Mar, Chi-Cheng Kuo
This article has provided an intelligent interference cancellation (IC) technique in spatial domain that can be employed in the future cognitive wireless network. The cognitive null control engine is proposed to control the number of nulls of software defined radio (SDR) digital beamformer (DBF) in order to maintain the receiver bit error rate (BER) below 10-5 over the changing interference and angular spread environments. Due to complexity consideration, the cognitive null control engine is considered to be implemented in the base station receiver of next generation wireless networks.
{"title":"The cognitive null control engine for next generation wireless networks","authors":"J. Mar, Chi-Cheng Kuo","doi":"10.1109/ITST.2012.6425260","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425260","url":null,"abstract":"This article has provided an intelligent interference cancellation (IC) technique in spatial domain that can be employed in the future cognitive wireless network. The cognitive null control engine is proposed to control the number of nulls of software defined radio (SDR) digital beamformer (DBF) in order to maintain the receiver bit error rate (BER) below 10-5 over the changing interference and angular spread environments. Due to complexity consideration, the cognitive null control engine is considered to be implemented in the base station receiver of next generation wireless networks.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130906990","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 : 2012-11-01DOI: 10.1109/ITST.2012.6425295
Hao-Teng Fan, Yi-cheng Lian, J. Hung
In this paper, we present a novel scheme to improve the noise robustness of features in speech recognition for vehicle noise environments. In the algorithm termed modulation spectrum exponential weighting (MSEW), the magnitude spectra of feature streams are updated by integrating a reference magnitude spectrum and the original magnitude spectrum with varying exponential weights based on the signal-to-noise ratio (SNR) of the operating environment. Specifically, we present three modes of MSEW, which can be viewed as a generalization of the two algorithms, modulation spectrum replacement/filtering (MSR/MSF). In experiments conducted on the AURORA-2 noisy digit database, the presented MSEW algorithms can achieve better recognition accuracy rates relative to the original MSR and MSF in various vehicle-noise environments.
{"title":"Modulation spectrum exponential weighting for robust speech recognition","authors":"Hao-Teng Fan, Yi-cheng Lian, J. Hung","doi":"10.1109/ITST.2012.6425295","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425295","url":null,"abstract":"In this paper, we present a novel scheme to improve the noise robustness of features in speech recognition for vehicle noise environments. In the algorithm termed modulation spectrum exponential weighting (MSEW), the magnitude spectra of feature streams are updated by integrating a reference magnitude spectrum and the original magnitude spectrum with varying exponential weights based on the signal-to-noise ratio (SNR) of the operating environment. Specifically, we present three modes of MSEW, which can be viewed as a generalization of the two algorithms, modulation spectrum replacement/filtering (MSR/MSF). In experiments conducted on the AURORA-2 noisy digit database, the presented MSEW algorithms can achieve better recognition accuracy rates relative to the original MSR and MSF in various vehicle-noise environments.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116318346","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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