2010 IEEE 72nd Vehicular Technology Conference - Fall最新文献_第8页

Optimal Power Allocation for Relay Assisted Cognitive Radio Networks 中继辅助认知无线网络的最优功率分配

2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594529

L. S. Jayasinghe, Nandana Rajatheva

引用次数: 30

Joint Opportunistic Beamforming and Subcarrier Assignment for Maximization of User Satisfaction in OFDMA Systems OFDMA系统中用户满意度最大化的联合机会波束形成和子载波分配

2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594551

T. Maciel, W. Freitas, F. Cavalcanti

引用次数: 4

A Multi-Mode Multi-Band and Multi-System-Based Access Architecture for High-Speed Railways 高速铁路多模式多频段多系统接入体系结构

2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594223

Jiayi Zhang, Z. Tan, Z. Zhong, Yong Kong

引用次数: 47

A Study of Real-Time Data Transmission Model of Train-to-Ground Control in High-Speed Railways 高速铁路车地控制实时数据传输模型研究

2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594434

Yan Yang, Zheng-quan Huang, Z. Zhong, Xin Fu

{"title":"A Study of Real-Time Data Transmission Model of Train-to-Ground Control in High-Speed Railways","authors":"Yan Yang, Zheng-quan Huang, Z. Zhong, Xin Fu","doi":"10.1109/VETECF.2010.5594434","DOIUrl":"https://doi.org/10.1109/VETECF.2010.5594434","url":null,"abstract":"CBTC (Communication Based Train Control) will be based on mobile communication, which the key problem is how to support reliability of control data transmission to improve track utilization and enhance train safety. This paper proposed a kind of real-time transmission model for high speed train end-to-end control data operation, which based on circuit switched data service by traditional wireless network access to transmit simultaneous instructions between the train operation control system and locomotive. In order to support this end-to-end real-time data application, we have studied a circuit domain latency model and improved a Simple Tunnel Protocol technology to accelerate data service which is easy to be implemented in the network. We have analyzed the performance under different service pressure by using MMPP (Markov Modulation Poisson Process) to describe service traffic pattern and employed a priority scheduling algorithm to estimate approximate service latency. The system simulation showed that data transmission latency should be reduced in busy time by the way of service priority scheduling. Although it might introduce extra traffic expenses and require reservation certain protection circuit, the average standby time probability could be cut down significantly.","PeriodicalId":417714,"journal":{"name":"2010 IEEE 72nd Vehicular Technology Conference - Fall","volume":"8 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":"131533026","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

Securing UWB Communications under NLOS Indoor Propagation Conditions 在NLOS室内传播条件下确保超宽带通信

2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594330

J. LeBel, D. Cule

{"title":"Securing UWB Communications under NLOS Indoor Propagation Conditions","authors":"J. LeBel, D. Cule","doi":"10.1109/VETECF.2010.5594330","DOIUrl":"https://doi.org/10.1109/VETECF.2010.5594330","url":null,"abstract":"Ultra-wideband (UWB) communications can be achieved under non-line-of-sight (NLOS) propagation conditions using carefully selected and located microwave scatterers together with a multi-carrier modulation technique such as orthogonal frequency-division multiplexing (OFDM). One key factor in achieving high data throughputs is the average signal intensity of the scattered signals that may be achieved by using one or multiple scatterers. Precise scattered signal measurements carried out in a 1 GHz band centered around 29.5 GHz with single or multiple scatterers have led to the conclusion that there exists an approximate relationship of proportionality between the average received signal intensity expressed in dB and the sum of scatterer cross section per unit length. Measurements of the frequency response of NLOS indoor propagation channels were performed for three different laterally-positioned receive antenna locations and used for single-input multiple output (SIMO) studies. Based on these measurements, OFDM data transmission streams were simulated. It was determined that individual subchannels of the OFDM data transmission stream suffered distortions to various degrees resulting in the unsuitability of some subchannels for data transmission. Using the technique of post-discrete Fourier transform (post-DFT) multiple subcarrier selection (MSCS), it was found that data throughputs comparable to those achievable under quasi-perfect propagation conditions could be obtained in NLOS indoor channels provided that the sum of the scatterer cross sections was of sufficient magnitude. Signal-level and error-rate metrics were used for the selection of OFDM subcarriers.","PeriodicalId":417714,"journal":{"name":"2010 IEEE 72nd Vehicular Technology Conference - Fall","volume":"36 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":"130187822","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

User Scheduling for Network MIMO Systems with Successive Zero-Forcing Precoding 具有连续强制零预编码的网络MIMO系统的用户调度

2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594132

S. Sigdel, W. Krzymień

{"title":"User Scheduling for Network MIMO Systems with Successive Zero-Forcing Precoding","authors":"S. Sigdel, W. Krzymień","doi":"10.1109/VETECF.2010.5594132","DOIUrl":"https://doi.org/10.1109/VETECF.2010.5594132","url":null,"abstract":"In this paper we consider simplified greedy user scheduling algorithms for clustered network multiuser multiple-input multiple-output (MIMO) systems with successive zero-forcing (SZF) precoding. The optimal user scheduling involves an exhaustive search, which is very complex. Among various suboptimal but lower complexity algorithms, greedy algorithms with heuristic scheduling metrics have been shown to achieve performance close to the exhaustive search. In this paper, we propose two simplified algorithms: interference-aware greedy user scheduling (IA-GUS) and interference-whitening greedy user scheduling (IW-GUS). IA-GUS schedules the users based on the information on interference power of the selected users in surrounding cooperating clusters, and IW-GUS schedules the users based on the information on whitened channels of all users requesting the service in the cluster. IA-GUS has lower complexity and performs better than IW- GUS. Simplified metrics for proportionally fair (PF) scheduling are also proposed. Performance of the proposed algorithms is analyzed and compared with dirty paper coding (DPC), block diagonalization (BD) and systems without network coordination. Simulation results demonstrate that the proposed algorithms for SZF achieve much higher outage capacity compared to BD with previously proposed algorithms.","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":"133354696","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: 10

Effective SNR Based Handoff Scheme in Heterogeneous Cellular Environments 异构蜂窝环境中基于信噪比的有效切换方案

2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594580

Dongmyoung Kim, D. Kang, Sunghyun Choi

引用次数: 1

Bridging the Gap between Simulation and Experimentation in Vehicular Networks 弥合车辆网络仿真与实验之间的差距

2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594402

Sofiane Khalfallah, B. Ducourthial

引用次数: 12

Model for Call Acceptance Based on Handoff Guarantees for Two Classes of Users 基于切换保证的两类用户呼叫接受模型

2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594557

Md. Mostafizur Rahman, A. Alfa

引用次数: 0

Exact Outage Probability Caused by Multiple Nakagami Interferers with Arbitrary Parameters 任意参数的多个中上干扰引起的精确中断概率

2010 IEEE 72nd Vehicular Technology Conference - Fall Pub Date : 2010-10-04 DOI: 10.1109/VETECF.2010.5594224

Qiuyan Liu, Z. Zhong, B. Ai, Miao Wang, C. Briso-Rodríguez

引用次数: 2