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2010 IEEE 72nd Vehicular Technology Conference - Fall最新文献

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Fuel-Saving Navigation System in VANETs VANETs中的节油导航系统
2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594424
Po-Yu Chen, Yi-Min Guo, Wen-Tsuen Chen
{"title":"Fuel-Saving Navigation System in VANETs","authors":"Po-Yu Chen, Yi-Min Guo, Wen-Tsuen Chen","doi":"10.1109/VETECF.2010.5594424","DOIUrl":"https://doi.org/10.1109/VETECF.2010.5594424","url":null,"abstract":"Because of shortage of raw materials, the energy-saving issues become popular in Vehicular Ad-hoc Networks (VANETs). A VANET is formed by traveling vehicles with communicating capability and thus it brings various applications. Navigation system is one of important applications in VANETs. The traditional navigation system usually plans a shortest path for users according to geographic maps but the planned path may become a slower one due to the traffic congestion. A congestion path not only delays the traveling time but wastes fuel. So the real-time traffic information should be considered while constructing a navigation path. In this paper, we propose a navigation system to find a fuel-saving navigation path by considering real-time traffic information. In order to estimate the traffic load on the future path, we maintain a table of historical traffic information by Intelligent Transport Systems (ITS). Furthermore, our system can dynamically change the navigation path by updating traffic information. In the simulation results, our approach can save more than 20% fuel consumption when vehicles travel in a traffic congestion environment.","PeriodicalId":417714,"journal":{"name":"2010 IEEE 72nd Vehicular Technology Conference - Fall","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125592117","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: 21
Cooperative Beamforming and Power Allocation in the Downlink of MIMO Cognitive Radio Systems MIMO认知无线电系统下行链路协同波束形成与功率分配
2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594256
H. Zamiri-Jafarian, Mohssen Abbasi Jannat-Abad
{"title":"Cooperative Beamforming and Power Allocation in the Downlink of MIMO Cognitive Radio Systems","authors":"H. Zamiri-Jafarian, Mohssen Abbasi Jannat-Abad","doi":"10.1109/VETECF.2010.5594256","DOIUrl":"https://doi.org/10.1109/VETECF.2010.5594256","url":null,"abstract":"In this paper, a new algorithm is proposed for cooperative beamforming and power allocation (CBPA) in the downlink of multi-input multi-output (MIMO) cognitive radio systems. Increasing the efficiency of spectrum usage is the main goal of the cognitive radio systems by servicing a number of secondary users in addition to the primary user. The proposed CBPA algorithm is developed based on a criterion in which the total signal to interference plus noise ratio (SINR) of the secondary users is maximized subject to guarantee the primary user's quality of service and a maximum transmit power. In addition, the CBPA algorithm provides the same quality of service for all secondary users. The transmitter and receiver beamforming vectors along with allocated powers to users are estimated by the CBPA algorithm in an iterative manner. The performance of the CBPA algorithm is evaluated by computer simulations and compared with that of the uplink-downlink duality method.","PeriodicalId":417714,"journal":{"name":"2010 IEEE 72nd Vehicular Technology Conference - Fall","volume":"19 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125647240","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: 12
Multi-Hop Relay Networks with Multiple-Antenna Equipped Source and Destination 带有多天线的多跳中继网络
2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594284
Gayan Amarasuriya, C. Tellambura, M. Ardakani
{"title":"Multi-Hop Relay Networks with Multiple-Antenna Equipped Source and Destination","authors":"Gayan Amarasuriya, C. Tellambura, M. Ardakani","doi":"10.1109/VETECF.2010.5594284","DOIUrl":"https://doi.org/10.1109/VETECF.2010.5594284","url":null,"abstract":"The performance of a multi-hop amplify-and-forward relay network is analyzed. The source and destination terminals are equipped with multiple-antennas and the relays with single-antennas. The cumulative distribution function and the moment generating function of two tight upper bounds of the end-to-end signal-to-noise ratio are derived. The lower bounds for the outage probability and the average symbol error rate (SER) are also derived. The results take into account the source-relay and the relay-destination correlation matrices; the uncorrelated case is treated as well. The asymptotic outage probability, average SER, diversity order and coding gain are also derived. Numerical results and Monte-Carlo simulations are presented to analyze the system performance and show the tightness of the proposed bounds.","PeriodicalId":417714,"journal":{"name":"2010 IEEE 72nd Vehicular Technology Conference - Fall","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127927948","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: 3
A Cross-Layer Path Selection Scheme for Video Streaming over Vehicular Ad-Hoc Networks 车载自组织网络视频流的跨层路径选择方案
2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594547
M. Asefi, J. Mark, Xuemin Shen
{"title":"A Cross-Layer Path Selection Scheme for Video Streaming over Vehicular Ad-Hoc Networks","authors":"M. Asefi, J. Mark, Xuemin Shen","doi":"10.1109/VETECF.2010.5594547","DOIUrl":"https://doi.org/10.1109/VETECF.2010.5594547","url":null,"abstract":"A new cross layer path selection scheme with quality of service (QoS) support along urban areas is proposed. First, we introduce a cross-layer approach where the routing decision takes explicit consideration of the application layer objective function. Second, the queueing based mobility model, spatial traffic distribution and probability of connectivity for sparse and dense Vehicular Ad-Hoc Networks (VANETs) are taken into consideration for developing the cross-layer routing protocol. We focus on the video streaming application and optimize application layer performance metric, i.e., Peak Signal to Noise Ratio (PSNR). Video stream is downloaded from a Road Side Unit (RSU) deployed along the road and is transmitted to the destination vehicle via multi-hop communication. Simulation results show that the cross layer path selection scheme can achieve results close to the upper analytical bound.","PeriodicalId":417714,"journal":{"name":"2010 IEEE 72nd Vehicular Technology Conference - Fall","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121772322","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: 15
Cooperative Beamforming Based Selection and Power Allocation for Relay Networks 基于协同波束形成的中继网络选择与功率分配
2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594465
Yi Liu, Jian-hua Zhang, Xiaofan Li, Zemin Liu
{"title":"Cooperative Beamforming Based Selection and Power Allocation for Relay Networks","authors":"Yi Liu, Jian-hua Zhang, Xiaofan Li, Zemin Liu","doi":"10.1109/VETECF.2010.5594465","DOIUrl":"https://doi.org/10.1109/VETECF.2010.5594465","url":null,"abstract":"In this paper, we consider cooperative beamforming in an amplify-and-forward (AF) cooperative network with multiple relay nodes.Specially, only \"appropriate\" relay nodes are selected to perform cooperative beamforming. Source node can determine the relay nodes with just mean channel gain, which will reduce the complexity of obtaining instantaneous channel state information (CSI). This scheme guarantees that the energy is allocated to those \"appropriate\" relay nodes, and accordingly improves the energy efficiency. Therefore, it is able to provide superior diversity over the conventional cooperative beamforming. We also prove that power allocation (PA) between source and selected relay nodes is a convex problem, which can be resolved with lower computational complexity. Simulation results demonstrate that our scheme achieves an essential improvement in terms of outage performance, as well as high energy-efficiency for energy-constrained networks.","PeriodicalId":417714,"journal":{"name":"2010 IEEE 72nd Vehicular Technology Conference - Fall","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131428348","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
Vehicle-Driver Communication Using Off-the-Shelf Transceivers 使用现成收发器的车辆驾驶员通信
2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594416
M. Ghamari, Antony Chung, U. Roedig, B. Honary, C. A. Pickering
{"title":"Vehicle-Driver Communication Using Off-the-Shelf Transceivers","authors":"M. Ghamari, Antony Chung, U. Roedig, B. Honary, C. A. Pickering","doi":"10.1109/VETECF.2010.5594416","DOIUrl":"https://doi.org/10.1109/VETECF.2010.5594416","url":null,"abstract":"Almost all modern cars can be controlled remotely using a personal communicator (keyfob). However, the degree of interaction between currently available personal communicators and cars is very limited. The communication link is unidirectional and the communication range is limited to a few dozen meters. However, there are many interesting applications that could be supported if a keyfob would be able to support energy efficient bidirectional longer range communication. In this paper we investigate off-the-shelf transceivers in terms of their usability for bidirectional longer range communication. Our evaluation results show that existing transceivers can generally support the required communication ranges but that links tend to be very unreliable. This high unreliability must be handled in an energy efficient way by the keyfob to car communication protocol in order to make off-the-shelf transceivers a viable solution","PeriodicalId":417714,"journal":{"name":"2010 IEEE 72nd Vehicular Technology Conference - Fall","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130272178","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
Factors Affecting Spectral Regrowth in DS-CDMA Signals Due to PD-HPA Nonlinear Distortion PD-HPA非线性失真对DS-CDMA信号频谱再生的影响因素
2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594446
T. Helaly, R. Dansereau, M. El-Tanany
{"title":"Factors Affecting Spectral Regrowth in DS-CDMA Signals Due to PD-HPA Nonlinear Distortion","authors":"T. Helaly, R. Dansereau, M. El-Tanany","doi":"10.1109/VETECF.2010.5594446","DOIUrl":"https://doi.org/10.1109/VETECF.2010.5594446","url":null,"abstract":"When passed through a high power amplifier (HPA), downlink direct sequence-code division multiple access (DS- CDMA) signals result in additional out-of-band emissions, or spectral regrowth, which could affect adjacent channels. In this paper, we explore which characteristics of the input CDMA signal, in relation to the amplifier characteristics, contribute to spectral regrowth. These characteristics represent the key features of the signal's interplay with the HPA, which give the system designer/operator the ability to minimize the spectral regrowth in the transmitted signal. The amplifier chain considered in this paper includes a predistorter (PD), namely PD- HPA. Assuming that the baseband CDMA signal is characterized as a band-limited Gaussian process, we develop analytic expressions for the characteristics contributing to spectral regrowth. Finally, simulation experiments are presented to demonstrate the effect of the established signal characteristics on spectral regrowth.","PeriodicalId":417714,"journal":{"name":"2010 IEEE 72nd Vehicular Technology Conference - Fall","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131497524","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: 4
Applicability of Game Engine for Ray Tracing Techniques in a Complex Urban Environment 游戏引擎对光线追踪技术在复杂城市环境中的适用性
2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594343
A. Navarro, D. Guevara
{"title":"Applicability of Game Engine for Ray Tracing Techniques in a Complex Urban Environment","authors":"A. Navarro, D. Guevara","doi":"10.1109/VETECF.2010.5594343","DOIUrl":"https://doi.org/10.1109/VETECF.2010.5594343","url":null,"abstract":"This work presents results for a new method of ray tracing in urban environments using game engine and graphic processing unit (GPU). First advantage obtained with this method is the simplicity for 3D modeling from raster digital elevation model (DEM). Second advantage is the ability to precisely obtain ray parameters and the multiple paths interacting between transmitter and receiver in urban environment for high and low base station. A third advantage is the reduction in computing time by using the GPU capacity. In this paper, we show simulation results and compare them with measurements, obtaining a good fit.","PeriodicalId":417714,"journal":{"name":"2010 IEEE 72nd Vehicular Technology Conference - Fall","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117318547","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: 21
Performance Evaluation of an L-Band Broadcast DAB/DMB System in Simulated Subway Tunnel Environment 模拟地铁隧道环境下l波段广播DAB/DMB系统性能评价
2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594445
A. Benani, M. Quenneville
{"title":"Performance Evaluation of an L-Band Broadcast DAB/DMB System in Simulated Subway Tunnel Environment","authors":"A. Benani, M. Quenneville","doi":"10.1109/VETECF.2010.5594445","DOIUrl":"https://doi.org/10.1109/VETECF.2010.5594445","url":null,"abstract":"This paper examines radio wave propagation in underground and subway environments from the perspective of providing digital radio with multimedia and video enhanced services (DAB/DMB) as a continuity of the same services offered above ground. To this end, a preliminary simulation framework of a DAB/DMB transmission system inside a rectangular subway tunnel is proposed. First, the received power and path-loss along the tunnel are predicted with a reflection ray-based propagation model. Then, the wideband radio characteristics of the DAB/DMB signal (mean delay spread, impulse response and fading behavior) are modeled and simulated based on subway tunnel measurements reported in literature. In addition, the benefits of space diversity techniques such as Maximal Ratio Combining (MRC) and Cyclic Delay Diversity (CDD) on the performance of the DAB/DMB transmission system have been investigated under the flat fading degradation as exhibited by the subway tunnel propagation channel.","PeriodicalId":417714,"journal":{"name":"2010 IEEE 72nd Vehicular Technology Conference - Fall","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130783633","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
Transmit Preprocessing Using Channel Selection for Multi-Antenna Ultra-Wideband Communications 基于信道选择的多天线超宽带通信传输预处理
2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594460
Taotao Wang, Tiejun Lv
{"title":"Transmit Preprocessing Using Channel Selection for Multi-Antenna Ultra-Wideband Communications","authors":"Taotao Wang, Tiejun Lv","doi":"10.1109/VETECF.2010.5594460","DOIUrl":"https://doi.org/10.1109/VETECF.2010.5594460","url":null,"abstract":"In this paper, we propose a novel transmit preprocessing scheme using Channel Selection (CS) to jointly design PreRake and Precoding for multiple-input multiple-output Ultra-Wideband (MIMO-UWB) communications. The PreRake technique is implemented to exploit the advantage of multipath diversity and can achieve spatial multiplexing based on our proposed CS. The combination of CS and PreRake transforms the UWB frequency selective fading channel into an equivalent flat fading channel and an equivalent channel matrix (ECM) is calculated. CS can construct the ECM as a well-conditioned matrix so that higher data transmission rate can be provided by spatial multiplexing. Then, Precoding method can be introduced to enhance system performance via diagonalizing the ECM. The simple but effective channel inversion (CI) precoding is employed in the proposed transmit preprocessing scheme which we denote as CS-CI-PreRake. Simulations results show the proposed scheme achieves a solid performance.","PeriodicalId":417714,"journal":{"name":"2010 IEEE 72nd Vehicular Technology Conference - Fall","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130724087","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
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