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2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring)最新文献

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PLR Model Based Forecast of Track Irregularity for Tamping Operations 基于PLR模型的夯实轨道不平顺度预测
2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring) Pub Date : 2019-04-01 DOI: 10.1109/VTCSpring.2019.8746378
Xia Yang, Xun Shao, Ziji Ma, K. Peng
{"title":"PLR Model Based Forecast of Track Irregularity for Tamping Operations","authors":"Xia Yang, Xun Shao, Ziji Ma, K. Peng","doi":"10.1109/VTCSpring.2019.8746378","DOIUrl":"https://doi.org/10.1109/VTCSpring.2019.8746378","url":null,"abstract":"With the rapid development of construction of railway in China, forecast of track irregularity becomes more significance for more efficient maintenance works. The piecewise linear prediction model is established under the conditions of known tamping operation efficiency and initial quality of railway track. The changing trend of track irregularity between two tamping operations. So in this paper, a piecewise linear representation based forecasting method is proposed to predict the track irregularity by mining the Track Quality Index (TQI) with underlying \"memory\" of track changing information of its special characteristic. Experiment results demonstrate that the accuracy of the proposed prediction model is over 94%, which can be used as important reference for arranging maintenance works.","PeriodicalId":134773,"journal":{"name":"2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring)","volume":"174 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122995750","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
A Study on Cell Configuration for HAPS Mobile Communications HAPS移动通信的小区配置研究
2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring) Pub Date : 2019-04-01 DOI: 10.1109/VTCSpring.2019.8746491
Yohei Shibata, Noboru Kanazawa, Kenji Hoshino, Y. Ohta, A. Nagate
{"title":"A Study on Cell Configuration for HAPS Mobile Communications","authors":"Yohei Shibata, Noboru Kanazawa, Kenji Hoshino, Y. Ohta, A. Nagate","doi":"10.1109/VTCSpring.2019.8746491","DOIUrl":"https://doi.org/10.1109/VTCSpring.2019.8746491","url":null,"abstract":"A High-Altitude Platform Station (HAPS), which provides communications services from an altitude of 20 km by using an Unmanned Aerial Vehicle (UAV) such as a balloon, airship, or other aircraft, is attracting much attention as a new mobile communications platform for an ultra-wide coverage area and disaster-resilient networks. A HAPS can provide mobile communications services directly to smartphones, which are commonly used in terrestrial mobile communications networks with Fourth Generation Long Term Evolution (4G LTE), and in the near future, Fifth Generation New Radio (5G NR). To achieve wide coverage and large capacity, it is desirable to introduce a cellular system that uses one- cell frequency reuse much like terrestrial mobile communications. However, a HAPS can provide various numbers of cells ranging from one to more than 100 depending on HAPS and UAV type, which differs from terrestrial base stations that have three to six sectors at most. Additionally, conventional studies on HAPS have paid little attention to cell configuration optimization. In this paper, we propose cell configuration optimization method for a HAPS cellular system with LTE, that can be generally applied regardless of the number of cells. We also clarify the cell configuration with antenna parameters that are suitable for different numbers of cells a HAPS can provide.","PeriodicalId":134773,"journal":{"name":"2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129645816","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
Codebook Based Precoding for Spatial Modulation 基于码本的空间调制预编码
2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring) Pub Date : 2019-04-01 DOI: 10.1109/VTCSpring.2019.8746429
E. Sourour
{"title":"Codebook Based Precoding for Spatial Modulation","authors":"E. Sourour","doi":"10.1109/VTCSpring.2019.8746429","DOIUrl":"https://doi.org/10.1109/VTCSpring.2019.8746429","url":null,"abstract":"This paper investigates codebook-based precoding for spatial modulation (SM) systems to improve the performance, reduce the feedback overhead and dispense with Channel State Information at the Transmitter (CSIT). Phase-only codebook with systematic structure, that is independent of the CSIT, is proposed. This codebook could meet published performance of SM codebook precoding with same or lower feedback overhead and simpler implementation. When supplemented with the proposed gain-only codebook, the performance improves further at the cost of small additional feedback overhead.","PeriodicalId":134773,"journal":{"name":"2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130320919","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
Spectral Efficiency of Very Large Multiuser MIMO Systems for Time-Selective Fading 超大多用户MIMO系统时选择性衰落的频谱效率
2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring) Pub Date : 2019-04-01 DOI: 10.1109/VTCSpring.2019.8746439
Apoorva Chawla, A. Jagannatham
{"title":"Spectral Efficiency of Very Large Multiuser MIMO Systems for Time-Selective Fading","authors":"Apoorva Chawla, A. Jagannatham","doi":"10.1109/VTCSpring.2019.8746439","DOIUrl":"https://doi.org/10.1109/VTCSpring.2019.8746439","url":null,"abstract":"This paper investigates the uplink asymptotic performance of single-cell multiuser multiple-input multiple-output(MU-MIMO) system with a very large antenna array for time-selective fading channels, resulting from user mobility. To exploit the temporal correlation of the channel, the Kalman filter (KF) is developed for channel estimation, followed by its asymptotic performance analysis. A lower bound on the uplink achievable rate is obtained in the asymptotic limit of a large number of time slots and a finite number of base station (BS) antennas for linear receivers, such as the maximum ratio combiner (MRC) and zero-forcing (ZF) receiver. In addition the pertinent power scaling law is also derived for a large number of antennas. Finally, simulation results are presented to validate the analytical results.","PeriodicalId":134773,"journal":{"name":"2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130402086","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
Joint Estimation of Channel and IQ Imbalance in Media-Based Modulation 基于媒体调制中信道和IQ不平衡的联合估计
2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring) Pub Date : 2019-04-01 DOI: 10.1109/VTCSpring.2019.8746443
Bharath Shamasundar, A. Chockalingam
{"title":"Joint Estimation of Channel and IQ Imbalance in Media-Based Modulation","authors":"Bharath Shamasundar, A. Chockalingam","doi":"10.1109/VTCSpring.2019.8746443","DOIUrl":"https://doi.org/10.1109/VTCSpring.2019.8746443","url":null,"abstract":"In direct conversion radio frequency (RF) front-end architecture, RF impairments such as IQ imbalance (IQI), DC offset, flicker noise, and oscillator leakage can affect the performance. In this work, we study the performance of media-based modulation (MBM), an attractive channel modulation scheme, in the presence of transmit and receiver side IQI and propose efficient compensation techniques. MBM is shown to be more resilient to IQI compared to conventional modulation. A scheme which jointly estimates and compensates the channel and IQI parameters using widely linear least squares estimation is proposed. The proposed scheme is shown to alleviate the transmit and receive IQI-induced BER degradation in MBM.","PeriodicalId":134773,"journal":{"name":"2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129283760","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
A Big Sensor Data Offloading Scheme in Rail Networks 一种铁路网络大传感器数据卸载方案
2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring) Pub Date : 2019-04-01 DOI: 10.1109/VTCSpring.2019.8746652
Mahdi Saki, M. Abolhasan, J. Lipman
{"title":"A Big Sensor Data Offloading Scheme in Rail Networks","authors":"Mahdi Saki, M. Abolhasan, J. Lipman","doi":"10.1109/VTCSpring.2019.8746652","DOIUrl":"https://doi.org/10.1109/VTCSpring.2019.8746652","url":null,"abstract":"In this paper, we propose an offloading scheme to transfer massive stored sensor data from rolling stock to railway data centers. We apply a delayed offloading strategy for non-critical stored data assuming that the critical data has been already separated through an appropriate edge processing task and has been sent via a real-time communication such as cellular networks. We propose train stations as potential and feasible spots for data offloading via available wireless local area networks (WLAN) such as existing WiFi network at stations. Thus, stations will not only be the places of passenger exchange but also data exchange. We develop an analytical model customized for the proposed offloading strategy in rail applications. Then we validate the performance of our model through simulation in various scenarios in Omnet. The simulation results shows an accuracy of %98.67 for the proposed analytical model with reference to the simulation results in Omnetpp. Additionally, by using our proposed scheme, we can theoretically offload up to 5.43 GB per each stopping station.","PeriodicalId":134773,"journal":{"name":"2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123965249","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
Overhead of V2X Secured Messages: An Analysis V2X安全消息开销分析
2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring) Pub Date : 2019-04-01 DOI: 10.1109/VTCSpring.2019.8746479
João Rufino, Luís Silva, Bruno Fernandes, João Almeida, J. Ferreira
{"title":"Overhead of V2X Secured Messages: An Analysis","authors":"João Rufino, Luís Silva, Bruno Fernandes, João Almeida, J. Ferreira","doi":"10.1109/VTCSpring.2019.8746479","DOIUrl":"https://doi.org/10.1109/VTCSpring.2019.8746479","url":null,"abstract":"It is almost certain that the future transportation systems will follow a cooperative approach where vehicles become one of the numerous information providers of a very complex multi-agent system. Thus, connecting worldwide vehicles securely and reliably is a pivotal challenge for the next generation of trans- portation systems. To address this matter, different standardi- sation entities have been presenting proposals for the so-called cooperative intelligent transportation systems (C-ITS). Therefore, in this paper, we first depict and analyse the safety messages and security profiles of the European standard, ETSI ITS. We study their maximum and minimum size and evaluate their impact on vehicular safety communications. Obtained results suggest that the existing ETSI ITS security solution can negatively impact vehicles' awareness due to significant bandwidth penalty on the wireless medium.","PeriodicalId":134773,"journal":{"name":"2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124180412","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
Rapid Node Cardinality Estimation in Heterogeneous Machine-to-Machine Networks 异构机器对机器网络中的快速节点基数估计
2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring) Pub Date : 2019-04-01 DOI: 10.1109/VTCSpring.2019.8746489
Y. SeshaVivek, P. Prasad, R. Kumar, Sachin Kadam, G. Kasbekar
{"title":"Rapid Node Cardinality Estimation in Heterogeneous Machine-to-Machine Networks","authors":"Y. SeshaVivek, P. Prasad, R. Kumar, Sachin Kadam, G. Kasbekar","doi":"10.1109/VTCSpring.2019.8746489","DOIUrl":"https://doi.org/10.1109/VTCSpring.2019.8746489","url":null,"abstract":"Machine-to-Machine (M2M) networks are an emerging technology with applications in various fields including smart grids, healthcare, vehicular telematics, smart cities etc. Heterogeneous M2M networks contain different types of nodes, e.g., nodes that send emergency, periodic and normal type data. An important problem is to rapidly estimate the number of active nodes of each node type in every time frame in such a network. In this paper, we design an estimation scheme for estimating the active node cardinalities of each node type in a heterogeneous M2M network with three types of nodes. Our scheme consists of two phases- in phase 1, coarse estimates are computed and these estimates are used to compute the final estimates to the required accuracy level in phase 2. We analytically derive a condition that can be used to decide as to which of two possible approaches is to be used in phase 2. Using simulations, we show that our proposed scheme requires significantly fewer time slots to execute compared to separately executing a well-known estimation protocol designed for a homogeneous network in prior work thrice to estimate the cardinalities of the three node types, even though both these schemes obtain estimates with the same accuracy.","PeriodicalId":134773,"journal":{"name":"2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring)","volume":"69 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114102863","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: 7
Risk Controlled Beacon Transmission in V2V Communications V2V通信中的风险控制信标传输
2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring) Pub Date : 2019-04-01 DOI: 10.1109/VTCSpring.2019.8746662
Avik Dayal, E. Colbert, V. Marojevic, J. Reed
{"title":"Risk Controlled Beacon Transmission in V2V Communications","authors":"Avik Dayal, E. Colbert, V. Marojevic, J. Reed","doi":"10.1109/VTCSpring.2019.8746662","DOIUrl":"https://doi.org/10.1109/VTCSpring.2019.8746662","url":null,"abstract":"Spectrum regulators and stakeholders from the wireless industry and Intelligent Transportation System (ITS) communities are exploring the use of the 5.9 GHz band for the dissemination of basic safety messages. Dedicated Short Range Communications (DSRC) sends out these messages at a constant rate of 10 Hz and packet collisions occur in dense vehicular environments. In this paper, we propose a priority-based dynamic beaconing scheme. The scheme determines a higher beacon transmission rate for vehicles that are at a higher risk of collision. Two risk based beacon rate protocols are evaluated in our ns-3 simulator, one that adapts the beacon rate between 1 and 10 Hz, and another between 1 and 20 Hz. This improves the packet delivery ratio (PDR) performance by up to 45% in congested environments using the 1-10 Hz adaptive beacon rate protocol and by 38% using the 1-20 Hz adaptive scheme. The simulation results also show that the likelihood of a vehicle collision due to missed packets decreases by up to 77% in a three lane dense highway scenario with 160 vehicles operating at different speeds.","PeriodicalId":134773,"journal":{"name":"2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114209186","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: 7
Precoded-OFDM within GFDM Framework GFDM框架内的预编码ofdm
2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring) Pub Date : 2019-04-01 DOI: 10.1109/VTCSpring.2019.8746539
Ahmad Nimr, Marwa Chafii, G. Fettweis
{"title":"Precoded-OFDM within GFDM Framework","authors":"Ahmad Nimr, Marwa Chafii, G. Fettweis","doi":"10.1109/VTCSpring.2019.8746539","DOIUrl":"https://doi.org/10.1109/VTCSpring.2019.8746539","url":null,"abstract":"To meet the requirements of new 5G use cases, two methodologies have been proposed. The first considers additional processing on orthogonal frequency division multiplexing (OFDM), e.g. windowing, filtering, and precoding. The other aims at the design of new modulation schemes. Essentially, any block-based linear modulation, such as generalized frequency division multiplexing (GFDM), can be seen as precoded-OFDM, where the precoded data result from the frequency domain modulation. This representation has a significant benefit for the implementation of new waveforms. Namely, the available OFDM transceiver techniques can be reused, whereas the required signal features can be fulfilled by the configuration of the GFDM modem. In this paper, we propose flexible OFDM precoding based on the GFDM framework. As a particular case, we focus on orthogonal precoding to enhance the performance in fading channels. By means of closed-form expressions, we show that all the sybsymbols within the same GFDM subcarrier attain the same signal-to-interference-plus-noise ratio (SINR) in frequency selective channel. In special precoding cases, all symbols achieve equal SINR. This feature is important to enhance the performance without a need for power allocation.","PeriodicalId":134773,"journal":{"name":"2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128031074","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
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