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2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall)最新文献

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An Efficient Message Passing Algorithm for Active User Detection and Channel Estimation in NOMA 一种有效的消息传递算法用于NOMA中主动用户检测和信道估计
2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall) Pub Date : 2019-09-01 DOI: 10.1109/VTCFall.2019.8891539
Weijia Dai, Haichao Wei, Jiaxi Zhou, Wuyang Zhou
{"title":"An Efficient Message Passing Algorithm for Active User Detection and Channel Estimation in NOMA","authors":"Weijia Dai, Haichao Wei, Jiaxi Zhou, Wuyang Zhou","doi":"10.1109/VTCFall.2019.8891539","DOIUrl":"https://doi.org/10.1109/VTCFall.2019.8891539","url":null,"abstract":"In 5G wireless communication network, massive machine type communication (mMTC) is an emerging research topic. For mMTC, non-orthogonal multiple access (NOMA) has been proposed to support its large-scale connectivity. Due to the sparsity of mMTC, compressed sensing based algorithms can be used to identify the active users and recover the sparse channel state information (CSI) vector. In this paper, we propose a Bayesian message passing algorithm based on expectation propagation (EP) for joint active user detection (AUD) and channel estimation (CE) in NOMA. The proposed method approximates the complicated target distribution with a Gaussian distribution to achieve linear complexity. Simulations demonstrate that the EP-based algorithm achieves better performance in joint AUD and CE than the exiting algorithms, especially in the low SNR regime.","PeriodicalId":6713,"journal":{"name":"2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall)","volume":"31 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87371407","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
Temperature Distribution on Lithium-Ion Polymer Battery Cell: Experiment and Modeling 锂离子聚合物电池电芯温度分布:实验与建模
2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall) Pub Date : 2019-09-01 DOI: 10.1109/VTCFall.2019.8890974
Yiqun Liu, Y. G. Liao, Ming-Chia Lai
{"title":"Temperature Distribution on Lithium-Ion Polymer Battery Cell: Experiment and Modeling","authors":"Yiqun Liu, Y. G. Liao, Ming-Chia Lai","doi":"10.1109/VTCFall.2019.8890974","DOIUrl":"https://doi.org/10.1109/VTCFall.2019.8890974","url":null,"abstract":"The performance of the lithium-ion battery is highly dependent on the operating temperature. In order to keep the operating temperature within the optimal range, a thermal management system (TMS) is used to cool down or warm up the battery. Understanding the heat generation characteristics and temperature distribution of the lithium-ion batteries is essential to design an effective TMS. In this paper, the surface temperature distribution over a 20Ah lithium-ion polymer battery cell is measured under different charging and discharging conditions. A cell thermal model is then built using the ANSYS Fluent. The simulation results are correlated and validated well with the experimental data. The validated cell thermal model provides a design guideline to thermal management system in the level of battery module and pack.","PeriodicalId":6713,"journal":{"name":"2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall)","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90567590","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
Performance of a Cooperative Network with Energy Harvesting Source and Relay 具有能量收集源和中继的协同网络性能
2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall) Pub Date : 2019-09-01 DOI: 10.1109/VTCFall.2019.8891150
Dileep Bapatla, S. Prakriya
{"title":"Performance of a Cooperative Network with Energy Harvesting Source and Relay","authors":"Dileep Bapatla, S. Prakriya","doi":"10.1109/VTCFall.2019.8891150","DOIUrl":"https://doi.org/10.1109/VTCFall.2019.8891150","url":null,"abstract":"In this paper, we analyze the performance of a two-hop cooperative communication network in which both source and the relay are energy buffer-aided energy harvesting nodes. We consider fixed-rate signalling at both the nodes. The source and relay are assumed to harvest energy from ambient sources and store it in energy buffers. In this paper we use discrete-time continuous-state space Markov chain to model the energy stored in the buffers. We consider two different energy management policies at the source - best-effort policy (BEP) and on-off policy (OOP) while only OOP is considered at the relay. Using these policies, two different cooperative transmission schemes are pre- sented. We also compare performance with direct transmission schemes. Simulation results are presented to validate the derived analytical expressions and bring out useful insights.","PeriodicalId":6713,"journal":{"name":"2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall)","volume":"36 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90623390","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
Ai-Enhanced Incentive Design for Crowdsourcing in Internet of Vehicles 车联网众包的ai增强激励设计
2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall) Pub Date : 2019-09-01 DOI: 10.1109/VTCFall.2019.8891430
Yanlin Yue, Wen Sun, Jiajia Liu, Yuanhe Jiang
{"title":"Ai-Enhanced Incentive Design for Crowdsourcing in Internet of Vehicles","authors":"Yanlin Yue, Wen Sun, Jiajia Liu, Yuanhe Jiang","doi":"10.1109/VTCFall.2019.8891430","DOIUrl":"https://doi.org/10.1109/VTCFall.2019.8891430","url":null,"abstract":"Crowdsourcing, as an essential part in Internet of Vehicles (IoV), can provide vehicles with various functions such as road condition monitoring and path planning. The prevalence and heterogeneity of crowdsourcing devices, although enabling various emerging applications in IoV, makes it challenging to yield intelligent and flexible incentive and management framework, while ensuring optimal choice for all entities. Note that artificial intelligence (AI) algorithms could automatically select the significant features in the underlying data and globally find optimal solutions even for non-convex object functions. In this paper, we propose an AI-driven incentive scheme using a deep learning based reverse auction scheme, in order to achieve revenue-optimal, dominant-strategy incentive compatible objectives. The effectiveness of the proposed framework has been verified through extensive simulations.","PeriodicalId":6713,"journal":{"name":"2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall)","volume":"12 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86056768","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
NOMA-Based Optimal Multiplexing Method for Downlink Service Channels to Maximize Integrated System Throughput 基于noma的下行业务信道最优复用方法以最大化综合系统吞吐量
2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall) Pub Date : 2019-09-01 DOI: 10.1109/VTCFall.2019.8891132
Teruaki Shikuma, Y. Yuda, K. Higuchi
{"title":"NOMA-Based Optimal Multiplexing Method for Downlink Service Channels to Maximize Integrated System Throughput","authors":"Teruaki Shikuma, Y. Yuda, K. Higuchi","doi":"10.1109/VTCFall.2019.8891132","DOIUrl":"https://doi.org/10.1109/VTCFall.2019.8891132","url":null,"abstract":"We propose a novel non-orthogonal multiple access (NOMA)-based optimal multiplexing method for multiple downlink service channels to maximize the integrated system throughput. In the fifth generation (5G) mobile communication system, the support of various wireless communication services such as massive machine-type communications (mMTC), ultra-reliable low latency communications (URLLC), and enhanced mobile broadband (eMBB) is expected. These services will serve different numbers of terminals and have different requirements regarding the spectrum efficiency and fairness among terminals. Furthermore, different operators may have different policies regarding the overall spectrum efficiency and fairness among services. Therefore, efficient radio resource allocation is essential during the multiplexing of multiple downlink service channels considering these requirements. The proposed method achieves better system performance than the conventional orthogonal multiple access (OMA)-based multiplexing method thanks to the wider transmission bandwidth per terminal and inter-terminal interference cancellation using the successive interference canceller (SIC). Computer simulation results reveal that the effectiveness of the proposed method is especially significant when the system prioritizes the fairness among terminals (including fairness among services).","PeriodicalId":6713,"journal":{"name":"2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall)","volume":"21 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91167234","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
Reliable Mobile-Proximity Interaction Mechanism Based on BLE Beacon-Initiated Notification 基于BLE信标发起通知的可靠移动-近距离交互机制
2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall) Pub Date : 2019-09-01 DOI: 10.1109/VTCFall.2019.8891525
Sangwon Seo, K. Jeon, Soochang Park
{"title":"Reliable Mobile-Proximity Interaction Mechanism Based on BLE Beacon-Initiated Notification","authors":"Sangwon Seo, K. Jeon, Soochang Park","doi":"10.1109/VTCFall.2019.8891525","DOIUrl":"https://doi.org/10.1109/VTCFall.2019.8891525","url":null,"abstract":"This research explores reliability and timing issues of push notification from Bluetooth Low Energy (BLE) beacons in outdoor districts for smartphone-based interactive applications. First, beacon signals fully cover a targeted area. The second issue is that beacon infrastructure is designed for reliable performance against environmental properties. Finally, the experience quality of notification to smartphone or mobile devices takes high level even though users have mobility such as a driver in a car, a user riding a bicycle, a walking user, etc. For finding out base lines to achieve these features in interactive system design and practical deployment of smart applications based on smartphone-beacon interaction, we evaluate real performances of beacon running at outdoor places. We compare the novel notification model, named n-1 model, which merely copes with application variables with delivering content redundancy, to the typical 1-1 alignment mean of one notification with single content. The proposed model shows average 70 % improvement against those impediments.","PeriodicalId":6713,"journal":{"name":"2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall)","volume":"26 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86028930","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
An Efficient Multicast Scheme for Live Streaming Services in SC-PTM SC-PTM中一种高效的直播服务组播方案
2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall) Pub Date : 2019-09-01 DOI: 10.1109/VTCFall.2019.8891159
Tsern-Huei Lee, Wei-Chieh Liu, A. Hsu
{"title":"An Efficient Multicast Scheme for Live Streaming Services in SC-PTM","authors":"Tsern-Huei Lee, Wei-Chieh Liu, A. Hsu","doi":"10.1109/VTCFall.2019.8891159","DOIUrl":"https://doi.org/10.1109/VTCFall.2019.8891159","url":null,"abstract":"Live streaming applications over wireless mobile networks have increased dramatically in recent years. In most current systems, the media center is capable of providing multiple streams of different qualities and each individual viewer selects its own stream based on channel condition and/or other considerations. This may result in inefficient use of radio resource. In this paper, we propose to let evolved node B, which has the channel conditions of all viewers, decide which streams should be delivered so that the total throughput is maximized, subject to the constraints that every viewer can successfully decode at least one stream and the radio resource consumed is under a pre-determined threshold. For a system that has many possible modulation and coding schemes, it requires huge computational complexity to obtain the optimum solution. We present a greedy algorithm which tends to find a solution that allows more viewers to decode higher quality streams. Simulation results show that the total throughputs achieved by the greedy algorithm for various scenarios are close to those of the optimum solutions.","PeriodicalId":6713,"journal":{"name":"2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall)","volume":"54 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86053762","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
On the Potential of Uplink Beamforming in Vehicular Networks Based on Experimental Measurements 基于实验测量的车载网络上行波束形成潜力研究
2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall) Pub Date : 2019-09-01 DOI: 10.1109/VTCFall.2019.8891271
T. Izydorczyk, Gilberto Berardinelli, Fernando M. L. Tavares, M. Bucur, P. Mogensen
{"title":"On the Potential of Uplink Beamforming in Vehicular Networks Based on Experimental Measurements","authors":"T. Izydorczyk, Gilberto Berardinelli, Fernando M. L. Tavares, M. Bucur, P. Mogensen","doi":"10.1109/VTCFall.2019.8891271","DOIUrl":"https://doi.org/10.1109/VTCFall.2019.8891271","url":null,"abstract":"This work evaluates the concept of uplink beamforming for vehicular communications in the sub-6 GHz frequency bands to improve throughput, latency and coverage of the vehicle to Base Station (BS) link. The data recorded in the experimental measurements using live cellular signals are used to study the performance of two direction acquisition methods: the Angle of Arrival (AoA) estimation and downlink-based beam sweep. Next, the feasibility of signal tracking techniques exploiting the location of the vehicle and the BS are investigated to alleviate the need for continuous direction acquisition. The results show that the downlink-based beam sweep leads to higher Signal to Interference and Noise Ratio (SINR) than beamforming based on the estimated AoA. Evaluated tracking techniques are shown to be capable of correctly estimating the beamforming angle for distances in order of hundreds of meters when BS's location is known to the vehicle.","PeriodicalId":6713,"journal":{"name":"2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall)","volume":"69 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86081939","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
Detectable Object-Sizes Range Estimation Based Multi-Task Cascaded Convolutional Neural Networks in the Vehicle Environment 车辆环境下基于多任务级联卷积神经网络的可检测目标尺寸范围估计
2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall) Pub Date : 2019-09-01 DOI: 10.1109/VTCFall.2019.8890976
W. Kim, Hyun-Kyun Choi, Minjung Shin
{"title":"Detectable Object-Sizes Range Estimation Based Multi-Task Cascaded Convolutional Neural Networks in the Vehicle Environment","authors":"W. Kim, Hyun-Kyun Choi, Minjung Shin","doi":"10.1109/VTCFall.2019.8890976","DOIUrl":"https://doi.org/10.1109/VTCFall.2019.8890976","url":null,"abstract":"In many studies regarding driver monitoring system, they directly employed face detection algorithms for general-purpose in an unconstrained environment. These algorithms are generally not suitable for limited resources of vehicles. Unlike the general unconstrained environment, the range of detectable face sizes and locations can be estimated in the vehicle environment. In this paper, we propose the Detectable Object-sizes Range Estimation algorithm (DORE) to estimates the range of detectable face sizes through specific information in the vehicle environment. The DORE algorithm makes images, in which a face is likely to be detected in the in-vehicle environment, to be fed into a face detection algorithm, such as Multi-task cascaded Convolutional Neural Networks (MTCNN) which stably detect faces rather than others. Our experiment shows that DORE applied MTCNN not only had the same performance as MTCNN in terms of accuracy but also had relatively low processing time in the vehicle environment.","PeriodicalId":6713,"journal":{"name":"2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall)","volume":"37 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86145036","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
Reliable Base Proposal for Header Compression 报头压缩的可靠基础建议
2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall) Pub Date : 2019-09-01 DOI: 10.1109/VTCFall.2019.8891332
Mate Tomoskozi, D. Lucani, F. Fitzek, P. Ekler
{"title":"Reliable Base Proposal for Header Compression","authors":"Mate Tomoskozi, D. Lucani, F. Fitzek, P. Ekler","doi":"10.1109/VTCFall.2019.8891332","DOIUrl":"https://doi.org/10.1109/VTCFall.2019.8891332","url":null,"abstract":"The upcoming wireless network generation has put a large emphasis on the fulfilment of high reliability constraints. Nonetheless, the trade- off between these and other network aspects, mainly delay and bandwidth, is a constant optimisational question and a tough challenge. The various employed protocols add certain encapsulation overheads, which albeit necessary, however could potentially be excessive, such as in the case of various IoT, and similar applications with small payloads. Header compression aims to reduce these headers, but a general problem still plagues the standards since their introduction to loss-prone wireless networks, which is the issue of lost context (re)initialisation packets that can make the compression upstart and the transmission of major changes unreliable, slow and costly. In this paper we propose a solution that circumvents some concerns of traditional header compression context initialisation by the employment of network coding, which we call the reliable base proposal technique. This provides a finely tunable method for balancing reliability and delay of decompression with bandwidth gain. Our results show that both compression gain and reliability can be increased over the previous standards.","PeriodicalId":6713,"journal":{"name":"2019 IEEE 90th Vehicular Technology Conference (VTC2019-Fall)","volume":"28 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86453163","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
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