2007 7th International Conference on ITS Telecommunications最新文献_第2页

Extension of Automotive Radar Target List Simulation to consider further Physical Aspects 汽车雷达目标列表仿真的扩展，以进一步考虑物理方面

2007 7th International Conference on ITS Telecommunications Pub Date : 2007-06-06 DOI: 10.1109/ITST.2007.4295847

M. Buhren, Bin Yang

引用次数: 13

Comparison of Collision Avoidance Systems and Applicability to Rail Transport 避碰系统的比较及其在轨道交通中的适用性

2007 7th International Conference on ITS Telecommunications Pub Date : 2007-06-06 DOI: 10.1109/ITST.2007.4295927

C. Garcia, A. Lehner, T. Strang, Matthias Röckl

引用次数: 36

Maximum Likelihood Processing for Arrays with Partially Unknown Sensor Gains and Phases 传感器增益和相位部分未知的阵列的最大似然处理

2007 7th International Conference on ITS Telecommunications Pub Date : 2007-06-06 DOI: 10.1109/ITST.2007.4295858

Minghui Li, Yilong Lu

{"title":"Maximum Likelihood Processing for Arrays with Partially Unknown Sensor Gains and Phases","authors":"Minghui Li, Yilong Lu","doi":"10.1109/ITST.2007.4295858","DOIUrl":"https://doi.org/10.1109/ITST.2007.4295858","url":null,"abstract":"This paper addresses the problem of source direction-of-arrival (DOA) estimation using a sensor array, where some of the sensors are perfectly calibrated, while others are uncalibrated. An algorithm is proposed for estimating the source directions in addition to the estimation of unknown array parameters such as sensor gains and phases, as a way of performing array self-calibration. The cost function is an extension of the maximum likelihood (ML) criteria that were originally developed for DOA estimation with a perfectly calibrated array. A particle swarm optimization (PSO) algorithm is used to explore the high-dimensional problem space and find the global minimum of the cost function. The design of the PSO is a combination of the problem-independent kernel and some newly introduced problem-specific features such as search space mapping, particle velocity control, and particle position clipping. This architecture plus properly selected parameters make the PSO highly flexible and reusable, while being sufficiently specific and effective in the current application. Simulation results demonstrate that the proposed technique may produce more accurate estimates of the source bearings and unknown array parameters in a cheaper way as compared with other popular methods, with the root-mean-squared error (RMSE) approaching and asymptotically attaining the Cramer Rao bound (CRB) even in unfavorable conditions.","PeriodicalId":106396,"journal":{"name":"2007 7th International Conference on ITS Telecommunications","volume":"5 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130136628","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: 8

Optimal Direction Finding in Unknown Noise Environments Using Antenna Arrays in Wireless Sensor Networks 无线传感器网络中天线阵列在未知噪声环境下的最优测向

2007 7th International Conference on ITS Telecommunications Pub Date : 2007-06-06 DOI: 10.1109/ITST.2007.4295888

Minghui Li, Yilong Lu

{"title":"Optimal Direction Finding in Unknown Noise Environments Using Antenna Arrays in Wireless Sensor Networks","authors":"Minghui Li, Yilong Lu","doi":"10.1109/ITST.2007.4295888","DOIUrl":"https://doi.org/10.1109/ITST.2007.4295888","url":null,"abstract":"With the advancements in wireless sensor network (WSN) platform architecture and cost-effective smart antennas, it is feasible to integrate antenna arrays on the sensor node in the same dimensions with slightly additional cost, and some integrated platforms have been reported. In this paper, we consider the challenging problem of direction finding in unknown noise fields with the onboard antenna array, arising from the desire to better exploit the spatial diversity in the harsh WSN deployment environments for various network-level benefits. We present an optimal algorithm based on the maximum likelihood (ML) criteria, and computed using particle swarm optimization (PSO) for accurate and fast direction estimation. The ML criterion function is derived using parameterization of noise covariance, and the PSO is incorporated with newly introduced features and properly selected parameters to enhance its convergence. Simulation results demonstrate that the proposed algorithm produces excellent bearing estimates, even in unfavorable scenarios involving few antenna elements, low signal-to-noise ratios and short data samples, which are the typical WSN working conditions due to the power, space and cost constraints.","PeriodicalId":106396,"journal":{"name":"2007 7th International Conference on ITS Telecommunications","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130651264","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: 17

QoS-enabled Internet-on-train network architecture: inter-working by MMP-SCTP versus MIP 支持qos的列车互联网网络体系结构:通过MMP-SCTP与MIP进行互连

2007 7th International Conference on ITS Telecommunications Pub Date : 2007-06-06 DOI: 10.1109/ITST.2007.4295922

D. Pareit, N. Gheysens, T. Van Leeuwen, I. Moerman, W. Van Brussel, W. Torfs, P. De Cleyn, C. Blondia

引用次数: 12

A Novel way for Handover in Maritime WiMAX Mesh Network 海上WiMAX网状网络切换的一种新方法

2007 7th International Conference on ITS Telecommunications Pub Date : 2007-06-06 DOI: 10.1109/ITST.2007.4295918

V. Hoang, M. Ma, R. Miura, M. Fujise

引用次数: 9

Improving Proactive Routing in VANETs with the MOPR Movement Prediction Framework 利用MOPR运动预测框架改进vanet中的主动路由

2007 7th International Conference on ITS Telecommunications Pub Date : 2007-06-06 DOI: 10.1109/ITST.2007.4295909

H. Menouar, M. Lenardi, F. Filali

{"title":"Improving Proactive Routing in VANETs with the MOPR Movement Prediction Framework","authors":"H. Menouar, M. Lenardi, F. Filali","doi":"10.1109/ITST.2007.4295909","DOIUrl":"https://doi.org/10.1109/ITST.2007.4295909","url":null,"abstract":"Wireless vehicular communications are attracting more and more interests for applied research in industries. Most of the efforts are spent in deploying Vehicular Mobile Ad-Hoc Networks (VANETs) for applications such as active safety and Internet services. This paper addresses routing problem in VANETs for applications related to comfort and infotainment for users where an unicast routing protocol optimized for fast topology changes is needed. In previous research work, we have proposed a new movement prediction-based routing concept for VANETs called MOPR which we have already applied to the reactive routing protocol AODV in order to improve its performances by exploiting vehicules movements patterns. In this work, we first propose a new design of this concept, then we apply it to the OLSR routing protocol by optimizing the procedure of selecting the MPR (Multipoint Relay) sets as well as that of determining the optimal path from each pair of vehicles. Basically, the connected MPR graph is composed of the most stable wireless links in the VANETs. We conduct several simulation scenarios to investigate the performance of the modified OLSR (OLSR-MOPR) by studying several metrics including the end-to-end average delay, the routing overhead, the packet delivery ratio, and the routing overhead ratio. The simulation results of the modified OLSR for various VANETs scenarios show great improvements comparing to the basic OLSR.","PeriodicalId":106396,"journal":{"name":"2007 7th International Conference on ITS Telecommunications","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121251331","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: 55

Harmonic Potential Field Method for Autonomous Ship Navigation 船舶自主导航的谐波势场法

2007 7th International Conference on ITS Telecommunications Pub Date : 2007-06-06 DOI: 10.1109/ITST.2007.4295916

C. Shi, Mingming Zhang, Jing Peng

引用次数: 24

Study of Security of Driving Safety Support System using RFID 基于RFID的行车安全保障系统安全性研究

2007 7th International Conference on ITS Telecommunications Pub Date : 2007-06-06 DOI: 10.1109/ITST.2007.4295869

S. Kubota, Y. Okamoto, H. Oda

引用次数: 1

Statistical Data Enabled Navigation System Experiment in Beijing 北京统计数据导航系统试验

2007 7th International Conference on ITS Telecommunications Pub Date : 2007-06-06 DOI: 10.1109/ITST.2007.4295853

Wenjia Wang, Bo Liu, H. Mizuta

引用次数: 5