2011 11th International Conference on ITS Telecommunications最新文献_第3页

Improved frequency offset estimation technique in IEEE 802.11p environments 改进了IEEE 802.11p环境下的频偏估计技术

2011 11th International Conference on ITS Telecommunications Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060149

Wen-Jeng Lin, Jung-Shan Lin, Yu-ting Sun

引用次数: 2

VANET: Is 95% probability of packet reception safe? 薇妮:95%的接收概率是安全的吗?

2011 11th International Conference on ITS Telecommunications Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060037

Natalya An, Tristan Gaugel, H. Hartenstein

{"title":"VANET: Is 95% probability of packet reception safe?","authors":"Natalya An, Tristan Gaugel, H. Hartenstein","doi":"10.1109/ITST.2011.6060037","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060037","url":null,"abstract":"In Vehicular Ad Hoc Networks vehicles periodically send beacon messages in order to gain mutual awareness of each others' presence. Successful reception of such beacons depends on various network conditions, e.g., transmission rate and power, as well as radio fading. Vehicular applications rely on such mutual awareness to supply the driver with safety and efficiency notifications. The Probability of Packet Reception (PPR) is the most common metric that is used to describe network performance, nevertheless, it is reflecting neither the acquired awareness nor application performance. Awareness, resides between network and application layers and can enable application layer to understand the network metrics and thus facilitate an evaluation of application performance. In this paper, we provide a methodology framework to evaluate application performance utilizing awareness. For this we first analyze the relationship between PPR and awareness and investigate feasible regions of network parameters and corresponding awareness ranges. Then we perform an evaluation of various awareness ranges on traffic safety metrics for the specific safety use case of a Stationary Vehicle Warning. We consider realistic driver behavior parameters and evaluate when awareness implies safety. As a second use case, Lane Change Warning application example is used to identify the required communication parameters that have to be met for a proper application performance.","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":"121804448","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: 63

A reduced-complexity multi-user MIMO precoding scheme with sorted-QR decomposition and block-based power allocation 基于分块功率分配和排序qr分解的低复杂度多用户MIMO预编码方案

2011 11th International Conference on ITS Telecommunications Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060137

Chih-Hsiang Lin, P. Tsai

{"title":"A reduced-complexity multi-user MIMO precoding scheme with sorted-QR decomposition and block-based power allocation","authors":"Chih-Hsiang Lin, P. Tsai","doi":"10.1109/ITST.2011.6060137","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060137","url":null,"abstract":"In this paper, we propose a reduced-complexity multi-user MIMO precoding scheme based on sorted-QR decomposition suitable for green applications. In addition, a new power allocation strategy is proposed that approaches optimized BER with low arithmetic complexity. The proposed block-based power allocation strategy allocates adequate power to the deeply-faded spatial pipe, which improves bit-error-rate performance. It also partitions the remaining pipes into several blocks with elements of similar magnitude to reduce complexity by exploiting the matrix property after sorted QR decomposition. Finally, the Tomlinson-Harashima precoding is used to get rid of multiple access interference and inter-antenna interference in advance at transmitters. Simulation results show that our proposed scheme is competitive to block-based geometric mean decomposition systems with much reduced arithmetic complexity. Moreover, the proposed scheme shows its superiority when more users are supported in 12×12 antenna configuration, which can be established in fixed and moderate-size transmitters such as the road side unit in intelligent transportation systems.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"59 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":"123871250","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: 5

Roadside and moving WAVE providers: Effectiveness and potential of hybrid solutions in urban scenarios 路边和移动WAVE提供商:城市场景中混合解决方案的有效性和潜力

2011 11th International Conference on ITS Telecommunications Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060039

C. Campolo, H. A. Cozzetti, A. Molinaro, R. Scopigno

引用次数: 3

Non-Line-Of-Sight GNSS signal detection using an on-board 3D model of buildings 非视距GNSS信号检测使用车载3D模型的建筑物

2011 11th International Conference on ITS Telecommunications Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060069

Peyret François, Bétaille David, Mougel Florian

引用次数: 28

Securing smartphone based ITS 保护基于智能手机的ITS

2011 11th International Conference on ITS Telecommunications Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060053

V. Manolopoulos, Panos Papadimitratos, S. Tao, A. Rusu

引用次数: 20

Symmetric key distribution for car-to-car/infrastructure communication systems 车对车/基础设施通信系统的对称密钥分配

2011 11th International Conference on ITS Telecommunications Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060050

Eriko Ando, Yuki Horita, K. Miyazaki

{"title":"Symmetric key distribution for car-to-car/infrastructure communication systems","authors":"Eriko Ando, Yuki Horita, K. Miyazaki","doi":"10.1109/ITST.2011.6060050","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060050","url":null,"abstract":"Services such as sending a pre-crash sensing warning and traffic condition warning are expected to be provided in car-to-car/infrastructure (C2X) communication systems. Maintaining message integrity is essential for these services because wrong messages may cause collision accidents and congestion. A message authentication code (MAC) generated by using a symmetric key is used to authenticate a message. The sender and receiver of a message must possess the same symmetric key before initiating communications. In the mentioned warning services, the sender of a message cannot know who receives the message, because the message is broadcast. Moreover, it is difficult for a road-side unit (RSU) to distribute a key to an onboard unit (OBU) because an OBU cannot always communicate with a RSU. Therefore, key distribution is a problem in C2X communication systems. We thus propose a protocol for key distribution. In the protocol, all OBUs and RSUs that exist in a certain area possess the same key. An OBU obtains the keys for the area in which the OBU is present and for the area to which the OBU will go next. The protocol enables a vehicle to verify message integrity by using a symmetric key in C2X communication systems.","PeriodicalId":220290,"journal":{"name":"2011 11th International Conference on ITS Telecommunications","volume":"59 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":"134234407","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

MUSIC-based multiple CFOs estimation methods for CA-OFDM systems 基于音乐的CA-OFDM系统多cfo估计方法

2011 11th International Conference on ITS Telecommunications Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060146

Chin-Yi Chang, Yu-ting Sun, Meng-Lin Ku

引用次数: 6

An efficient destination-based data management policy for vehicular networks 一种高效的基于目的地的车载网络数据管理策略

2011 11th International Conference on ITS Telecommunications Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060089

Mildred M. Caballeros Morales, Rim Haw, Jun Lee, C. Hong

{"title":"An efficient destination-based data management policy for vehicular networks","authors":"Mildred M. Caballeros Morales, Rim Haw, Jun Lee, C. Hong","doi":"10.1109/ITST.2011.6060089","DOIUrl":"https://doi.org/10.1109/ITST.2011.6060089","url":null,"abstract":"The Vehicular Ad hoc Network (VANET) takes the advantage of the relative mobility of the vehicles to opportunistically share dynamic information when they meet, aiming to avoid accidents and traffic jams, get local information of the nearby places, enjoy entertainment applications among others. However, the shared information must be handled properly, saving bandwidth and tackling the unnecessary duplication of data, preventing the scalability problem and congestion. The current solutions of these problems incorporate the concept of Relevance to share the information in a clever way but they do not exploit the advantage of knowing the destination of the vehicles and context-aware services to follow behavior patterns. Therefore, we propose an efficient destination-based data management policy, which follows the vehicular behavior and context to determine the relevance or importance of the information using a publisher/subscriber model and cluster-based dissemination. In order to demonstrate the feasibility of the proposal we implemented sets of simulation in which the results reported an outstanding performance in terms of congestion and delivery ratio.","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":"114558231","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: 5

Enhancing the reproduction of road signs in automotive HMIs to protect children 加强汽车人机界面中道路标志的再现，以保护儿童

2011 11th International Conference on ITS Telecommunications Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060078

Melanie Ganzhorn, J. F. Diederichs, H. Widlroither

引用次数: 6