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2017 IEEE 86th Vehicular Technology Conference (VTC-Fall)最新文献

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Recommendation Trust for Improved Malicious Node Detection in Ad Hoc Networks 改进Ad Hoc网络中恶意节点检测的推荐信任
Pub Date : 2017-09-01 DOI: 10.1109/VTCFall.2017.8288217
Saneeha Ahmed, K. Tepe
In this paper, a trust model is proposed to assess credibility of recommendations in vehicular ad hoc networks (VANETs). In a VANET, nodes share important information with each other. Often these nodes misbehave by sending incorrect information. In order to identify correct information, nodes often use recommendations from their neighbors. However, malicious neighbors may manipulate their recommendations in order to eliminate honest nodes from the network. The trust model provided in this paper will assist nodes to identify such malicious senders and incorrect recommendations. The performance of networks using the proposed trust model is observed to be superior than the existing trust model as suggested by a true positive rate of 0.996 and a false positive rate of 0.001 when malicious senders show selective or probabilistic misbehavior.
本文提出了一种基于信任模型的车辆自组织网络(VANETs)推荐可信度评估模型。在VANET中,节点彼此共享重要信息。这些节点通常会发送错误的信息。为了识别正确的信息,节点通常使用邻居的建议。然而,恶意邻居可能会操纵他们的推荐,以从网络中消除诚实节点。本文提供的信任模型将帮助节点识别这些恶意发送者和错误的建议。当恶意发送者表现出选择性或概率性不当行为时,使用所提出的信任模型的网络性能优于现有的信任模型,其真阳性率为0.996,假阳性率为0.001。
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引用次数: 8
Reputation Routing in MANETs manet中的信誉路由
Pub Date : 2017-09-01 DOI: 10.1109/VTCFall.2017.8288226
P. Singh, K. Kar, C. Kamhoua
In this work we present a trust computation method, Direct Trust Computation, and utilize it to design a Reputation Routing Model (RRM) for MANETs. We utilize this routing framework to mitigate the effect of blackhole attacks in OLSR without altering the original protocol or increasing its overhead. Our solution can isolate bad nodes in the network and select the most trusted path to route packets. We evaluate the performance of our model by emulating network scenarios on Common Open Research Emulator (CORE) for static as well as dynamic topologies. From our findings, it is observed that RRM substantially outperforms the original OLSR protocol in terms of packet delivery rates in presence of a malicious node, unless the mobility rate is quite high. RRM is therefore useful in mitigating the effect of blackhole attacks in MANETs, particularly in low mobility scenarios.
在这项工作中,我们提出了一种信任计算方法,直接信任计算,并利用它来设计一个面向manet的声誉路由模型(RRM)。我们利用该路由框架在不改变原始协议或增加其开销的情况下减轻OLSR中黑洞攻击的影响。我们的解决方案可以隔离网络中的不良节点,并选择最可信的路径来路由数据包。我们通过在公共开放研究仿真器(CORE)上模拟静态和动态拓扑的网络场景来评估我们模型的性能。从我们的发现中可以观察到,在存在恶意节点的情况下,RRM在数据包传输速率方面大大优于原始OLSR协议,除非移动性非常高。因此,RRM对于减轻黑洞攻击在manet中的影响非常有用,特别是在低移动性的情况下。
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引用次数: 3
Novel Synthesis of Dual-Frequency RF Energy-Harvesting Rectifier Incorporating Coupled Lines 结合耦合线的双频射频能量收集整流器的新型合成
Pub Date : 2017-09-01 DOI: 10.1109/VTCFall.2017.8287879
M. A. Maktoomi, F. Ghannouchi, R. Vyas
In this paper, a novel synthesis technique for dual-frequency rectifier for ambient RF energy harvesting is proposed. For the first time, a fully distributed version of dual-frequency resistance compression network (RCN) is introduced. The proposed RCN utilizes the dual- frequency characteristic of the c-type coupled lines terminated into real impedance. The design technique is fully analytical based on closed-form design equations. Extensive simulations have been carried out to illustrate the proposed idea. The obtained results outperform the earlier reported lumped element network and provides a minimum 10% improvement in the RF-to-DC conversion efficiency at -20 dBm input power. The proposed technique can potentially serve as a starting point for the dual-frequency RF rectifier design.
本文提出了一种用于环境射频能量采集的双频整流器合成新技术。首次提出了全分布式的双频电阻压缩网络(RCN)。所提出的RCN利用了c型耦合线端接成实阻抗的双频特性。设计技术是基于封闭式设计方程的完全解析式设计。已经进行了大量的模拟来说明所提出的想法。所得结果优于先前报道的集总元件网络,在-20 dBm输入功率下,rf - dc转换效率至少提高10%。提出的技术可以潜在地作为双频射频整流器设计的起点。
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引用次数: 1
Fast Converging ADMM-Penalized Algorithm for Turbo-Like OVXDM 类涡轮OVXDM的快速收敛admm惩罚算法
Pub Date : 2017-09-01 DOI: 10.1109/VTCFall.2017.8287958
Peng Lin, Yafeng Wang, Daoben Li
Overlapped x domain multiplexing (OVXDM) encoding is recently proposed with ultra-high spectral efficiency by the shift and overlap of weighted data under low signal-to-noise ratio (SNR). However, the decoding performance of OVXDM is restricted by the exponential increase of decoding complexity with the growth of the spectral efficiency. In this paper, we first propose a novel type of turbo-like (TL) structure of OVXDM encoding (TL-OVXDM) combining the advantages of turbo and OVXDM encoding. Then a modified alternating direction method of multipliers with a penalty term (ADMM-penalized) algorithm is proposed, which can achieve robust decoding performance in only a few iterations and significantly reduce the computational complexity of the decoding process through a faster convergence. Simulation results demonstrate that TL-OVXDM with Log-BCJR decoding algorithm can outperform the upper bound of OVXDM bit error probability. And when overlapping fold is relatively high in TL-OVXDM, the proposed ADMM-penalized decoding algorithm quickens the convergence speed and achieves robust performance in bit error rate (BER) with low computational complexity.
重叠x域复用(OVXDM)编码是近年来提出的一种在低信噪比条件下利用加权数据的移位和重叠实现超高频谱效率的编码方法。然而,OVXDM的解码复杂度随着频谱效率的增长呈指数增长,解码性能受到限制。本文首先结合turbo和OVXDM编码的优点,提出了一种新的类turbo (TL) OVXDM编码结构(TL-OVXDM)。然后提出了一种改进的带惩罚项的乘法器交替方向法(ADMM-penalized)算法,该算法只需几次迭代即可实现鲁棒的译码性能,并通过更快的收敛速度显著降低译码过程的计算复杂度。仿真结果表明,采用Log-BCJR译码算法的TL-OVXDM可以优于OVXDM误码概率的上界。当TL-OVXDM的重叠率较高时,采用admm补偿的译码算法加快了收敛速度,在较低的计算复杂度下实现了较好的误码率性能。
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引用次数: 1
Remote Estimation over Control Area Networks 控制区域网络的远程估计
Pub Date : 2017-09-01 DOI: 10.1109/VTCFall.2017.8288388
Aditya Mahajan
The problem of assigning priorities for scheduling multiple sensor measurements over a control area network is considered. A dynamic priority allocation scheme is proposed, where priorities are assigned according to the value of information. The value of information is defined as the fee a receiver is willing to pay to access that information. It is shown that the value of information can be computed by solving two Fredholm integral equations. An efficient computation of the value of information is proposed. Numerical examples suggest that the proposed priority assignment scheme outperforms the existing schemes in the literature.
研究了控制区域网络中多个传感器测量调度的优先级分配问题。提出了一种动态优先级分配方案,根据信息的价值来分配优先级。信息的价值被定义为接收者愿意为访问该信息而支付的费用。结果表明,通过求解两个Fredholm积分方程可以计算出信息的值。提出了一种有效的信息价值计算方法。数值算例表明,本文提出的优先级分配方案优于现有的文献方案。
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引用次数: 2
Grouping Based Uplink Resource Allocation for Massive M2M Communications over LTE-A 基于分组的LTE-A海量M2M通信上行资源分配
Pub Date : 2017-09-01 DOI: 10.1109/VTCFall.2017.8288158
Shaoyi Xu, Junlong Li, X. Qin
Deployment of massive machine type communication devices (MTCDs) in the LTE-A network may incur signaling and traffic congestion during the random access (RA) and uplink scheduling. To overcome these problems, a grouping based RA and uplink scheduling scheme is proposed in this paper. The group leader will initiate RA and apply for the uplink transmission resources on behalf of the group members. Specifically, a second group paging scheme is designed to further reduce the access delay and increase the access probability. Implementation details are described in a practical LTE-A system and simulations prove that our proposed approach outperforms the traditional methods with respect to the access probability, access time delay, collision probability and fairness.
在LTE-A网络中部署大量mtcd (machine type communication device),可能会在RA (random access)和上行调度过程中产生信令和流量拥塞。为了克服这些问题,本文提出了一种基于分组的RA和上行链路调度方案。由组长发起RA,代表组成员申请上行传输资源。具体地说,设计了第二组分页方案,以进一步降低访问延迟,提高访问概率。在一个实际的LTE-A系统中描述了实现细节,仿真结果表明,我们提出的方法在接入概率、接入时延、碰撞概率和公平性方面都优于传统方法。
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引用次数: 2
Full-Duplex SIMO Relaying for Machine-Type Communications in Cellular Networks 蜂窝网络中机器型通信的全双工SIMO中继
Pub Date : 2017-09-01 DOI: 10.1109/VTCFall.2017.8288157
Utku Tefek, Teng Joon Lim
To address massive access in machine-type communication (MTC), we consider in-band full- duplex (IBFD) relays to aggregate MTC packets. IBFD allows devices to receive and transmit concurrently on the same frequency band, potentially doubling the spectral efficiency. On the downside, the use of IBFD raises the interference due to an increased density of simultaneously transmitting nodes. This paper deals with a key trade-off between the increased spectral efficiency and interference in utilizing IBFD uplink relays in a densely deployed MTC network. Using stochastic geometry, we develop a framework to evaluate the end-to-end outage probability and uplink data aggregation rate. The model consists of MTC devices and IBFD relay nodes that forward MTC packets to base stations (BSs) over single-input-multiple-output channels. The BSs employ linear zero-forcing filters to cancel the interference from their associated relay nodes which may transmit simultaneously on the same frequency band. We show the somewhat surprising result that IBFD relaying does not lead to performance gains over half-duplex relays, when devices and relays are independently and homogeneously distributed in space.
为了解决机器型通信(MTC)中的大量访问问题,我们考虑了带内全双工(IBFD)中继来聚合MTC数据包。IBFD允许设备在同一频带上同时接收和发送,可能使频谱效率翻倍。缺点是,由于同时传输节点的密度增加,使用IBFD会增加干扰。本文讨论了在密集部署的MTC网络中利用IBFD上行中继提高频谱效率和干扰之间的关键权衡。利用随机几何,我们开发了一个框架来评估端到端中断概率和上行数据聚合率。该模型由MTC设备和IBFD中继节点组成,IBFD中继节点通过单输入多输出通道将MTC数据包转发给基站。BSs采用线性强制零滤波器来消除可能在同一频带上同时传输的关联中继节点的干扰。当设备和继电器在空间中独立且均匀分布时,IBFD继电器不会比半双工继电器带来性能提升,这一结果有些令人惊讶。
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引用次数: 3
Train Velocity and Data Throughput - A Large Scale LTE Cellular Measurements Study 列车速度和数据吞吐量——大规模LTE蜂窝测量研究
Pub Date : 2017-09-01 DOI: 10.1109/VTCFall.2017.8288294
Johan Garcia, Stefan Alfredsson, A. Brunström, C. Beckman
Train-mounted aggregation routers that provide WiFi access to train passengers and bundle external communication over multiple cellular modems/links is an efficient way of providing communication services on trains. However, the characteristics of such systems have received limited attention in the literature. In this paper we address this gap by examining the communication characteristics of such systems based on a large data set gathered over six months from an operational Swedish railway system. We focus our examination on the relationship between per link throughput and train velocity. Using Levenberg- Marquardt non-linear regression a noticeable critical point is observed for an RS-SINR of around 12 dB. At this point the impact of increased train velocity on per link throughput changes from being negative to becoming positive. Using a machine learning approach we also explore the relative importance of several observed metrics in relation to per link throughput.
列车上的聚合路由器为列车乘客提供WiFi接入,并通过多个蜂窝调制解调器/链路捆绑外部通信,是在列车上提供通信服务的有效方式。然而,这些系统的特征在文献中受到的关注有限。在本文中,我们根据从运营的瑞典铁路系统收集的六个多月的大型数据集,通过检查此类系统的通信特性来解决这一差距。我们将重点研究每条线路吞吐量与列车速度之间的关系。使用Levenberg- Marquardt非线性回归,观察到RS-SINR约为12 dB的显著临界点。在这一点上,提高列车速度对每条链路吞吐量的影响从负面变为正面。使用机器学习方法,我们还探讨了与每链路吞吐量相关的几个观察指标的相对重要性。
{"title":"Train Velocity and Data Throughput - A Large Scale LTE Cellular Measurements Study","authors":"Johan Garcia, Stefan Alfredsson, A. Brunström, C. Beckman","doi":"10.1109/VTCFall.2017.8288294","DOIUrl":"https://doi.org/10.1109/VTCFall.2017.8288294","url":null,"abstract":"Train-mounted aggregation routers that provide WiFi access to train passengers and bundle external communication over multiple cellular modems/links is an efficient way of providing communication services on trains. However, the characteristics of such systems have received limited attention in the literature. In this paper we address this gap by examining the communication characteristics of such systems based on a large data set gathered over six months from an operational Swedish railway system. We focus our examination on the relationship between per link throughput and train velocity. Using Levenberg- Marquardt non-linear regression a noticeable critical point is observed for an RS-SINR of around 12 dB. At this point the impact of increased train velocity on per link throughput changes from being negative to becoming positive. Using a machine learning approach we also explore the relative importance of several observed metrics in relation to per link throughput.","PeriodicalId":375803,"journal":{"name":"2017 IEEE 86th Vehicular Technology Conference (VTC-Fall)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130157095","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
Blind Nonlinear Compensation for RF Receiver Employing Sub-Nyquist Sampling A/D Conversion 基于亚奈奎斯特采样A/D转换的射频接收机盲非线性补偿
Pub Date : 2017-09-01 DOI: 10.1109/VTCFall.2017.8287921
K. Kimura, Y. Yamao
Blind nonlinear compensation for RF receiver is an important research topic in 5G mobile communication in which concurrent multi-band signals are employed to enable multi-access in heterogeneous networks. Since a nonlinear compensator processes intermodulation bandwidth of more than three times of signal bandwidth, reduction of power consumption is essential. This paper proposed a novel nonlinear compensation technique for receivers, which employs sub-Nyquist sampling A/D conversion. By folding outband spectrum, it achieves similar compensation performance while reducing the sampling speed of A/D converter to less than half of the normal sampling.
射频接收机的盲非线性补偿是5G移动通信中的一个重要研究课题,5G移动通信采用并发多频段信号实现异构网络中的多址接入。由于非线性补偿器处理的互调带宽超过信号带宽的三倍,因此降低功耗是必不可少的。提出了一种新型的接收机非线性补偿技术,该技术采用亚奈奎斯特采样a /D转换。通过折叠带外频谱,在将A/D转换器的采样速度降低到正常采样速度的一半以下的同时,实现了类似的补偿性能。
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引用次数: 0
Hardware Design and Implementation of Sparse Code Multiple Access 稀疏码多址的硬件设计与实现
Pub Date : 2017-09-01 DOI: 10.1109/VTCFall.2017.8287946
Yunfei Wu, Jincheng Dai, K. Niu, Chao Dong, Xin Bian
Sparse code multiple access (SCMA) has recently emerged as one of the most favorable multiple access schemes for 5G networks, which allows overloading with a large number of users so as to enable massive connectivity. In this paper, we design a hardware framework of a uplink system for SCMA. First, we propose a unified quantization scheme based on density evolution optimization which is independent of signal-to-noise ratios (SNR). Second, we apply a fast convergence message passing algorithm (FC-MPA) in SCMA multiuser detection, in which the function nodes updating and variable nodes updating are processed synchronously so as to make the FC-MPA converge about 2 times faster than standard MPA. Finally, based on FC- MPA, we design a pipelined decoding structure for SCMA so as to increase throughput. FPGA results demonstrate that the fix- point performance achieve a near floating-point performance for different SNR and the pipelined hardware structure we design is feasible.
稀疏码多址(SCMA)最近成为5G网络最有利的多址方案之一,它允许大量用户过载,从而实现大规模连接。本文设计了SCMA上行系统的硬件框架。首先,提出了一种独立于信噪比的基于密度演化优化的统一量化方案。其次,我们将快速收敛消息传递算法(FC-MPA)应用于SCMA多用户检测中,该算法同步处理功能节点更新和变量节点更新,使FC-MPA的收敛速度比标准MPA快2倍左右。最后,在FC- MPA的基础上,为SCMA设计了一种流水线解码结构,以提高吞吐量。FPGA实验结果表明,在不同信噪比的情况下,定点性能达到了接近浮点的性能,所设计的流水线硬件结构是可行的。
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引用次数: 1
期刊
2017 IEEE 86th Vehicular Technology Conference (VTC-Fall)
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