2013 13th International Conference on ITS Telecommunications (ITST)最新文献

Knowledge base approach for developing a mobile personalized travel companion 基于知识库的移动个性化旅行伴侣开发方法

2013 13th International Conference on ITS Telecommunications (ITST) Pub Date : 2013-12-19 DOI: 10.1109/ITST.2013.6685528

Paulo Figueiras, R. Costa, P. Maló, Luka Bradesko, Mitja Jermol

{"title":"Knowledge base approach for developing a mobile personalized travel companion","authors":"Paulo Figueiras, R. Costa, P. Maló, Luka Bradesko, Mitja Jermol","doi":"10.1109/ITST.2013.6685528","DOIUrl":"https://doi.org/10.1109/ITST.2013.6685528","url":null,"abstract":"Nowadays with the proliferation of a panoply of smartphones and tablets on the market, almost everyone has access to mobile devices, which offers better processing capabilities and access to new information and services. Taking this into account the demand for new and more personalized services which aid users in their daily tasks is increasing. Current navigation systems lack in several ways in order to satisfy such demand, namely, accurate information about urban traffic in real-time, possibility to personalize the information used by such systems and also the need to have a more dynamic and user friendly interaction between device and traveler. In short, the current navigation systems were not designed to be intelligent enough to communicate their needs effectively to humans, and they are not intelligent enough to understand humans' attempts to satisfy those needs. This paper presents an approach for developing a personalized mobility knowledge base to be used by a mobile travelling companion application, whose conversational interactions crowdsource information about the world for the purpose of providing highly specific assistance and recommendations to the user. The work presented here, is still part of on-going work currently addressed under the EU FP7 MobiS project. Results achieved so far do not address the final conclusions of the project but form the basis for the formalization of the MobiS domain knowledge along with the MobiS data models.","PeriodicalId":117087,"journal":{"name":"2013 13th International Conference on ITS Telecommunications (ITST)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127178368","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}

引用次数: 2

On the fingerprints dynamics in WLAN indoor localization 无线局域网室内定位中指纹动态的研究

2013 13th International Conference on ITS Telecommunications (ITST) Pub Date : 2013-12-19 DOI: 10.1109/ITST.2013.6685532

Shweta Shrestha, J. Talvitie, E. Lohan

引用次数: 19

Simulation evaluations of cooperative relative positioning around intersections 交叉口周围协同相对定位的仿真评价

2013 13th International Conference on ITS Telecommunications (ITST) Pub Date : 2013-12-19 DOI: 10.1109/ITST.2013.6685575

N. Kawanishi, R. Furukawa, Suhua Tang, Akio Hasegawa, R. Miura, Y. Takeuchi

{"title":"Simulation evaluations of cooperative relative positioning around intersections","authors":"N. Kawanishi, R. Furukawa, Suhua Tang, Akio Hasegawa, R. Miura, Y. Takeuchi","doi":"10.1109/ITST.2013.6685575","DOIUrl":"https://doi.org/10.1109/ITST.2013.6685575","url":null,"abstract":"Position information plays an important role in support system for safe driving, where inter-vehicle distance is used to prevent collision accidents from happening. In urban areas, however, multipath propagation of GPS signals degrades the accuracy of absolute positions and the deduced relative position. On the other hand, simply removing reflected signals might lead to a shortage of satellites in fixing positions. In our previous work, we suggested cooperative relative positioning to improve the accuracy of relative positions of adjacent vehicles so as to prevent collision accidents from happening. In this paper, we focus on intersections, which are risky areas for vehicles where accidents occur with a higher probability than other areas, then investigate whether our scheme can help to improve the accuracy of relative positions at intersections. More specifically, we evaluate multipath errors due to reflection/diffraction and analyze their correlation between receivers around intersections. We find that (i) Our system helps to improve the accuracy of relative positions of vehicles running on the same road, (ii) The spatial correlation of positioning signals decreases as vehicles get nearer to intersections. As a result of the initial step to focus on intersections, only relying on our scheme is insufficient and other measures become necessary as well in order to get accurate relative positions.","PeriodicalId":117087,"journal":{"name":"2013 13th International Conference on ITS Telecommunications (ITST)","volume":"13 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120891733","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}

引用次数: 0

Collaborative environment for road traffic monitoring 道路交通监测协同环境

2013 13th International Conference on ITS Telecommunications (ITST) Pub Date : 2013-12-19 DOI: 10.1109/ITST.2013.6685551

A. Iovanovici, L. Prodan, M. Vladutiu

引用次数: 3

Vehicle clustering algorithm for sharing information on traffic congestion 交通拥堵信息共享的车辆聚类算法

2013 13th International Conference on ITS Telecommunications (ITST) Pub Date : 2013-12-19 DOI: 10.1109/ITST.2013.6685518

Yohei Kanemaru, S. Matsuura, Masatoshi Kakiuchi, Satoru Noguchi, A. Inomata, K. Fujikawa

引用次数: 8

Safety view management for augmented reality based on MapReduce strategy on multi-core processors 基于MapReduce策略的多核增强现实安全视图管理

2013 13th International Conference on ITS Telecommunications (ITST) Pub Date : 2013-12-19 DOI: 10.1109/ITST.2013.6685537

Hsiao-Chien Tsai

引用次数: 3

An adaptive driving assistance system for electric vehicle 一种电动汽车自适应驾驶辅助系统

2013 13th International Conference on ITS Telecommunications (ITST) Pub Date : 2013-12-19 DOI: 10.1109/ITST.2013.6685549

Wei-Yao Chou

{"title":"An adaptive driving assistance system for electric vehicle","authors":"Wei-Yao Chou","doi":"10.1109/ITST.2013.6685549","DOIUrl":"https://doi.org/10.1109/ITST.2013.6685549","url":null,"abstract":"In this paper, an adaptive driving assistance system for electric vehicle (EV) charging guiding was developed. In order to make sure EV driving without running out of battery, chargeable driving region was designed to indicate a safe driving region. EV was allowed to reach any positions within the proposed chargeable driving region and was guaranteed to reach at least one charging station with sufficient battery power. In general, a traditional charging guiding system usually estimated the maximum driving range to indicate a reachable driving region. However, only considering reachable driving region might result running out of battery afterward. It was not guaranteed that the reachable region was also chargeable. Therefore, the proposed adaptive driving assistance system estimated a chargeable driving region instead. The chargeable driving region not only estimated the required battery power from the current EV position to the boundaries of the region but also the required battery power from the boundaries of the region back to an available charging station. In other words, as long as EV was driven within the indicated chargeable driving region, EV was guaranteed to reach at least one charging station to charge without running out of battery. In the implemented system, current EV position, charging station positions, vehicle weight, road gradient and vehicle speed were applied to calculate the chargeable driving region.","PeriodicalId":117087,"journal":{"name":"2013 13th International Conference on ITS Telecommunications (ITST)","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133608089","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}

引用次数: 1

Feature Point Video Synthesis for tagged vehicular traffic 带标签车辆交通特征点视频合成

2013 13th International Conference on ITS Telecommunications (ITST) Pub Date : 2013-12-19 DOI: 10.1109/ITST.2013.6685593

M. Adeel, G. M. Khan, Syed Mohsin Matloob Bokhari, Zeeshan Shafiq, S. Mahmud

引用次数: 0

Mitigating location and speed errors in floating car data using context-based accuracy estimation 使用基于上下文的精度估计减轻浮动汽车数据中的位置和速度误差

2013 13th International Conference on ITS Telecommunications (ITST) Pub Date : 2013-12-19 DOI: 10.1109/ITST.2013.6685529

Y. Akai, Akihito Hiromori, T. Umedu, H. Yamaguchi, T. Higashino

{"title":"Mitigating location and speed errors in floating car data using context-based accuracy estimation","authors":"Y. Akai, Akihito Hiromori, T. Umedu, H. Yamaguchi, T. Higashino","doi":"10.1109/ITST.2013.6685529","DOIUrl":"https://doi.org/10.1109/ITST.2013.6685529","url":null,"abstract":"Although the floating car data contains detailed behavior of vehicles, most researches utilizing the floating car data mainly focus on providing link-level, large-scale traffic estimation because raw floating car data usually contains location and speed errors due to the characteristics of on-board sensors such as GPS and tachometers. Such errors are usually vehicle-dependent and considered hard to be eliminated. To tackle the challenge, in this paper, we propose a method to mitigate location and speed error in raw floating car data. The method takes two different information sources from GPS and tachometers respectively, and relies more on “more dependable” source. The dependability is assessed based on the locations and situations where the data are observed (e.g. in urban canyons the accuracy of GPS decreases and tachometers are more reliable). By analyzing and modeling such characteristics, we eliminate errors contained in those information sources to obtain more accurate traces and behavior of vehicles. We have evaluated our method using the real floating car data obtained over 7 days from 4777 vehicles that have installed commercial on-board navigation systems. We have shown that the relative distance errors have been reduced from 3.84% to 2.86% in 81.6% of vehicles.","PeriodicalId":117087,"journal":{"name":"2013 13th International Conference on ITS Telecommunications (ITST)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133200445","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}

引用次数: 1

Generalized unitary rotation based precoder for super-imposing of synchronization sequences in OFDM 基于广义酉旋转的OFDM同步序列叠加预编码器

2013 13th International Conference on ITS Telecommunications (ITST) Pub Date : 2013-12-19 DOI: 10.1109/ITST.2013.6685556

A. Aboltins, P. Misans

{"title":"Generalized unitary rotation based precoder for super-imposing of synchronization sequences in OFDM","authors":"A. Aboltins, P. Misans","doi":"10.1109/ITST.2013.6685556","DOIUrl":"https://doi.org/10.1109/ITST.2013.6685556","url":null,"abstract":"This paper proposes a novel algorithm for obtaining an orthogonal frequency division multiplexing (OFDM) signal with a super-imposed synchronization sequence, which is orthogonal to the rest of the signal. It allows to completely eliminate an interference between the super-imposed sequence and the useful signal. The super-imposed sequence does not consume dedicated time and frequency resources and provide additional means for timing and carrier frequency offset estimation and can be used for the channel estimation. The proposed precoder is based on a new class of fast unitary transformations and it is compatible with classic OFDM systems with pilot signal assisted modulation (PSAM) and frequency domain equalization. Moreover, it can be used in conjunction with existing OFDM timing offset and carrier frequency synchronization methods. The impact of frequency domain equalization on the orthogonality between the synchronization sequence and data subcarriers is analyzed. Additionally, the compatibility of the proposed precoder with popular data-aided and decision-directed timing offset estimation algorithms have been verified using Monte Carlo computer simulations.","PeriodicalId":117087,"journal":{"name":"2013 13th International Conference on ITS Telecommunications (ITST)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131321227","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}

引用次数: 2