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2019 26th International Conference on Telecommunications (ICT)最新文献

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Will the Phone Number Disappear? 电话号码会消失吗?
Pub Date : 2019-04-01 DOI: 10.1109/ICT.2019.8798838
C. Poole, Sacha Nacar
The E.164 format phone number has been around for over 150 years and over this time has provided a ubiquitous means of identification and routing on the PSTN. Experts have been speculating about the demise of the phone number for some time and with the widespread emergence of communication OTTs the general expectation has been that the phone number will soon lose its original functionality as a communication endpoint on the PSTN. Our research suggests, however, that the phone number is not set to go extinct in the medium term but is more likely to evolve into a unique and core element of digital identifying technologies for a wide range of online services, and is thus likely to retain it's significance for at least another decade or so.
E.164格式的电话号码已经存在了150多年,在这段时间里,它在PSTN上提供了一种无处不在的识别和路由方式。一段时间以来,专家们一直在猜测电话号码的消亡,随着通信ott的广泛出现,人们普遍认为电话号码将很快失去其作为PSTN上通信端点的原始功能。然而,我们的研究表明,从中期来看,电话号码不会消失,而更有可能演变成广泛在线服务中数字识别技术的独特核心元素,因此至少在未来十年左右的时间里,电话号码很可能会保持其重要性。
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引用次数: 0
Analysis of Indoor Solutions for Provision of Indoor Coverage at 3.5 GHz and 28 GHz for 5G System 5G系统3.5 GHz和28 GHz室内覆盖方案分析
Pub Date : 2019-04-01 DOI: 10.1109/ICT.2019.8798826
Muhammad Usman Sheikh, Fayezeh Ghavimi, K. Ruttik, R. Jäntti
The 5th Generation (5G) wireless networks are envisioned to support emerging bandwidth-hungry applications. Millimeter wave (mmWave) communication has been considered as a promising solution for future capacity crunch due to large available bandwidth. However, an outdoor macrocellular layer lacks the capability of providing an adequate coverage to indoor users, especially at higher frequencies i.e. 28 GHz. Therefore, the provision of high data rates and high system capacity in an indoor environment requires a separate indoor solution. The main target of this paper is to analyze the performance of Ultra Dense Network (UDN) and Distributed Antenna System (DAS) deployment in an indoor (university office) environment at 1.8 GHz, 2.6 GHz, 3.5 GHz and 28 GHz frequency. This research work is conducted by performing a ray tracing simulation using a three dimensional floor plan. The obtained results show that the existing indoor solutions which are in operation at 2.6 GHz can be reused at 3.5 GHz frequency with minor power adjustment, or by using antennas with little higher gain. However, the operation at 28 GHz requires a new plan for providing good indoor coverage. Acquired results show that DAS improves the cell capacity by reducing the interference. However, the UDN provides a higher system capacity due to more number of cells. The real gain of operation at 28 GHz can only be achieved by using larger system bandwidth e.g 200 MHz band.
预计第五代(5G)无线网络将支持新兴的带宽密集型应用。由于可用带宽大,毫米波通信被认为是解决未来容量紧张的一种有前途的解决方案。然而,室外大蜂窝层缺乏向室内用户提供足够覆盖的能力,特别是在较高的频率,即28千兆赫。因此,在室内环境中提供高数据速率和高系统容量需要单独的室内解决方案。本文的主要目标是分析超密集网络(UDN)和分布式天线系统(DAS)在1.8 GHz、2.6 GHz、3.5 GHz和28 GHz频率下在室内(大学办公室)环境下的部署性能。这项研究工作是通过使用三维平面图进行光线追踪模拟来进行的。结果表明,现有的2.6 GHz室内解决方案可以在3.5 GHz频率上重复使用,只需进行较小的功率调整,或者使用增益略高的天线。然而,28ghz的运行需要一个新的方案来提供良好的室内覆盖。获得的结果表明,DAS通过减少干扰提高了电池容量。UDN的单元数更多,系统容量更大。28ghz的实际增益只能通过使用更大的系统带宽来实现,例如200mhz频段。
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引用次数: 1
Accelerating the Learning Speed of DNN Equalizer in Underwater VLC System by an Auxiliary Kernel Layer 利用辅助核层加快水下VLC系统中DNN均衡器的学习速度
Pub Date : 2019-04-01 DOI: 10.1109/ICT.2019.8798820
N. Chi, Yiheng Zhao
We compared various kernel-aided deep neural network (K-DNN) equalizers, which can significantly reduce the iterative training times (ITTs) of the deep neural network (DNN) nonlinear equalizer.
我们比较了各种核辅助深度神经网络(K-DNN)均衡器,这些均衡器可以显著减少深度神经网络(DNN)非线性均衡器的迭代训练次数(ITTs)。
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引用次数: 1
Web of Things Semantic Functionality Distance 物联网语义功能距离
Pub Date : 2019-04-01 DOI: 10.1109/ICT.2019.8798818
M. Robles, B. Silverajan, N. Narendra
The Web of Things is an architectural initiative proposed by the World Wide Web Consortium, to enable Internet of Things devices to interact through Web standards. One of the cornerstones of the architecture is a Thing Description, which is an object model that exposes devices to the Internet through a common interface composed by properties, actions and events. In this paper, we evaluate the similarity level on capabilities calculated for Web of Things objects. We developed, based on the Thing Description, a metric called Web of Things Semantic Functionality Distance (WoTSFD). The semantic functionality distance is a measure of the device ability to perform the same function in a specific application context. We evaluate this metric in a smart home environment. The results show that different devices can be detected to be similar, thus suitable to collaborate or be replaced by each other to perform a specific task in a determined use case.
物联网是万维网联盟(World Wide Web Consortium)提出的一项架构倡议,旨在使物联网设备能够通过Web标准进行交互。该体系结构的基石之一是物描述(Thing Description),它是一个对象模型,通过一个由属性、动作和事件组成的公共接口向Internet公开设备。在本文中,我们评估了物联网对象计算能力的相似度。我们在物描述的基础上开发了一个度量标准,称为物联网语义功能距离(wtsfd)。语义功能距离是设备在特定应用程序上下文中执行相同功能的能力的度量。我们在智能家居环境中评估这一指标。结果表明,可以检测到不同的设备是相似的,因此适合在确定的用例中进行协作或相互替换以执行特定任务。
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引用次数: 0
Enhanced OMP for Missing Traffic Reconstruction based on Sparse SVD 基于稀疏奇异值分解的缺失交通重构改进OMP
Pub Date : 2019-04-01 DOI: 10.1109/ICT.2019.8798801
I. D. Irawati, A. B. Suksmono, Ian Joseph Matheus Edward
Missing large amount of internet data is a crucial issue to be addressed in network monitoring. The missing information should be restored using only a minimum knowledge of the data. Compressive Sampling (CS) algorithm provides a solution to complete data by utilizing the properties of randomness in the input data. Recently the reconstruction algorithm has developed in the base dictionary using orthogonal based operators. In this paper, we consider a CS approch to solve the missing problem using Singular Value Decomposition (SVD) sparsity, routing matrix for measurement matrix, and Orthogonal Matching Pursuit (OMP) as a recovery algorithm. To improve the accuracy, we also incorporating linear interpolation after OMP and Bilinear interpolation after SVD reconstruction. The missing scheme is randomized to simulate the actual behaviour of the network. Our experiments show that our proposed method is capable to fix large missing values with a high degree of accuracy for all missing type. This method is superior compared to the method in previous studies.
大量网络数据的丢失是网络监控中需要解决的一个关键问题。丢失的信息应该只用最少的数据知识来恢复。压缩采样(CS)算法利用输入数据的随机性提供了一种完整数据的解决方案。近年来,基于正交算子的基字典重构算法得到了发展。在本文中,我们考虑了一种CS方法来解决缺失问题,使用奇异值分解(SVD)稀疏性,路由矩阵作为测量矩阵,正交匹配追踪(OMP)作为恢复算法。为了提高精度,我们还结合了OMP后的线性插值和SVD重建后的双线性插值。缺失的方案被随机化以模拟网络的实际行为。我们的实验表明,我们提出的方法能够以较高的精度修复所有缺失类型的大缺失值。与以往的研究方法相比,该方法具有明显的优越性。
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引用次数: 4
Surface Plasmonic Resonance Sensor for Wider Range of Low Refractive Index Detection 用于宽范围低折射率探测的表面等离子共振传感器
Pub Date : 2019-04-01 DOI: 10.1109/ICT.2019.8798847
Emranul Haque, M. Hossain, T. Pham, Y. Namihira, N. H. Hai, Feroz Ahmed
A D-shaped photonic crystal fiber (PCF) based plasmonic sensor for detection of a wider range of low refractive indexes operating at near to mid-infrared wavelengths is presented in this paper. Using finite element method (FEM) on the basis of y-polarized transverse electric (TE) mode TEy, wavelength sensitivity, amplitude sensitivity and resolution of the proposed sensor have been investigated numerically. Plasmonic material Gold (Au) and sensing layer are placed outside the fiber for attaining practically feasible detection mechanism. A thin layer of titanium dioxide (TiO2) is employed as an adhesive layer in order to attach the plasmonic material with silica glass. In the sensing range of 1.00 to 1.37, maximum sensitivities of 20000 nm/RIU and 811 refractive index unit (RIU)−1 are obtained with resolutions of $5times 10^{-6}$ and $1.43times 10^{-5}$ RIU using wavelength and amplitude interrogation method, respectively. Therefore, it would be a suitable candidate for environmental monitoring, pharmaceutical inspection, organic chemical sensing, and other analytes detection.
本文提出了一种基于d形光子晶体光纤(PCF)的等离子体传感器,用于在近红外到中红外波段检测更宽范围的低折射率。采用基于y偏振横电(TE)模式的有限元方法,对该传感器的波长灵敏度、幅度灵敏度和分辨率进行了数值研究。在光纤外放置等离子体材料金(Au)和传感层,以实现实际可行的探测机制。采用一薄层二氧化钛(TiO2)作为粘接层,以便将等离子体材料与硅玻璃粘接在一起。在1.00 ~ 1.37的感应范围内,以5 × 10^{-6}$和1.43 × 10^{-5}$ RIU的分辨率,分别获得了20000nm /RIU和811折射率单位(RIU)−1的最大灵敏度。因此,它将是环境监测、药品检验、有机化学传感和其他分析物检测的合适候选者。
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引用次数: 2
Extended Blind Interference Alignment for Superior DoF in Multiple User-Clusters Networks 多用户群网络中高自由度扩展盲干扰对准
Pub Date : 2019-04-01 DOI: 10.1109/ICT.2019.8798796
Dan Wang, Zhongfang Wang, Qian Cheng, Jingwen Fu, Yongming Wang
Interference Alignment (IA) is a promising technique for interference elimination in wireless networks. However, it is difficult for IA to achieve the desired effect in practice since the channel state information at transmitter (CSIT) is always limited. In this paper, an extended blind interference alignment (eBIA) is proposed to enhance the performance of multi-cluster networks without CSIT. The theoretical analysis indicates that the proposed scheme can cancel the inter-cell and intra-cell interferences by relying on the single reconfigurable antenna of users. Meanwhile, this paper gives the relative comparisons with other existing algorithms on degree of freedom (DoF) and sum-rate. The simulation results demonstrate that the proposed scheme does indicate the better performance.
干扰对准(IA)是一种很有前途的无线网络干扰消除技术。然而,在实际应用中,由于发射机的信道状态信息总是有限的,因此IA很难达到预期的效果。为了提高无CSIT的多集群网络的性能,提出了一种扩展的盲干扰对准(eBIA)方法。理论分析表明,该方案可以依靠用户的单个可重构天线来消除小区间和小区内的干扰。同时,在自由度和求和速率方面与现有算法进行了比较。仿真结果表明,该方案具有较好的性能。
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引用次数: 1
On The Equivalence between Hybrid and Full Digital Beamforming in mmWave communications 毫米波通信中混合波束形成与全数字波束形成的等价性研究
Pub Date : 2019-04-01 DOI: 10.1109/ICT.2019.8798794
M. Shehata, A. Mokh, M. Crussiére, M. Hélard, P. Pajusco
Recently, Millimeter Wave (mmWave) systems have emerged as a potential solution for the spectrum scarcity problem experienced by current wireless technologies. However, practically implementing such systems is challenging as they suffer from high hardware complexity and power consumption. Analog beamforming is considered as one suitable approach for practical implementation of such systems, relaxing the hardware and power consumption requirements compared to full digital beamforming solution. Moreover, hybrid beamforming solutions emerged as an attractive solution that can capture the trade-off between digital and analog ones. In this paper we mathematically show that in pure Line of Sight (LoS) channels, using hybrid beamforming with Zero Forcing (ZF) at the baseband can achieve equivalent Spectral Efficiency (SE) compared to the full digital ZF precoding, with lower hardware complexity, and lower power consumption. Moreover, we validate the equivalence in SE performance between hybrid ZF and digital ZF by simulation results.
最近,毫米波(mmWave)系统已成为解决当前无线技术所面临的频谱短缺问题的潜在解决方案。然而,实际实现这样的系统是具有挑战性的,因为它们受到高硬件复杂性和功耗的影响。模拟波束形成被认为是一种适合于实际实现的方法,与全数字波束形成解决方案相比,它降低了硬件和功耗要求。此外,混合波束形成解决方案作为一种有吸引力的解决方案出现,可以捕获数字和模拟之间的权衡。在本文中,我们从数学上证明了在纯视距(LoS)信道中,在基带使用零强迫(ZF)混合波束形成与全数字ZF预编码相比,可以获得等效的频谱效率(SE),具有更低的硬件复杂性和更低的功耗。通过仿真验证了混合ZF和数字ZF在SE性能上的等效性。
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引用次数: 3
Implementation of SCHC in NS-3 and Comparison with 6LoWPAN NS-3中SCHC的实现及其与6LoWPAN的比较
Pub Date : 2019-04-01 DOI: 10.1109/ICT.2019.8798782
Wael Ayoub, F. Nouvel, Sarah Hmede, A. Samhat, M. Mroué, Jean-Christophe Prévotet
The rapid growth of IoT applications usage enables the Internet connectivity of a massive number of devices using different technologies. Most of these technologies, such as Low Power Wide Area Networks (LPWANs), are non-IP due to the difficulties of using IP on constrained devices. These nodes are characterized by more constraints with respect to other IoT technologies. According to [1], IPv6 offers many benefits for IoT, which motivated the IETF to form a Working Group (WG) to study and propose new solutions to run IPv6 on the new technologies of IoT [2], [3]. The key to solving this issue is the header compression mechanisms. In this paper, we analyze the two IETF standardized solutions, SCHC and 6LoWPAN, to compress IPv6 over constrained nodes within LPWAN. Based on [3], we implement the SCHC mechanism [4] in the network simulator NS3 [5]. We also show that SCHC protocol solution as an adaptation layer between the network layer and the link layer is better in term of header compression by providing a smaller header size compared to 6LoWPAN.
物联网应用的快速增长使大量使用不同技术的设备能够连接互联网。大多数这些技术,如低功率广域网(lpwan),都是非IP的,因为在受限设备上使用IP很困难。这些节点的特点是相对于其他物联网技术有更多的限制。根据[1],IPv6为物联网提供了许多好处,这促使IETF成立了一个工作组(WG)来研究和提出新的解决方案,以便在物联网的新技术上运行IPv6[2],[3]。解决这个问题的关键是报头压缩机制。在本文中,我们分析了两个IETF的标准化解决方案,SCHC和6LoWPAN,在LPWAN的约束节点上压缩IPv6。基于[3],我们在网络模拟器NS3[5]中实现了SCHC机制[4]。我们还表明,SCHC协议解决方案作为网络层和链路层之间的自适应层,通过提供比6LoWPAN更小的报头大小,在报头压缩方面更好。
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引用次数: 6
Teaching the Internet of Things: The first three years 物联网教学:前三年
Pub Date : 2019-04-01 DOI: 10.1109/ICT.2019.8798840
R. Grammenos, C. Poole
This paper describes our experience of designing and delivering a course on the Internet of Things (IoT) to Masters level students. The course runs intensively over one week with 75% of the content delivered in a semi-flipped style and with a solid focus on practical, hands-on exercises. The emphasis is on systems integration enabling students to build a complete, working IoT system comprising three layers, namely sensors, connectivity and data analytics. While the course is targeted at graduate students in Electronic and Electrical Engineering (EEE) and Computer Science (CS), our student cohort is very diverse with students having completed their first degree in fields such as Physics, Telecommunications and Information Technology. A unique feature of the course lies in strong collaboration with key industrial partners, some being actively involved in the course delivery. The course is proving to be a popular option choice and has received strongly positive student feedback.
本文描述了我们为硕士水平的学生设计和提供物联网(IoT)课程的经验。该课程在一周内密集运行,75%的内容以半翻转的方式交付,并注重实践,动手练习。重点是系统集成,使学生能够构建一个完整的、可工作的物联网系统,包括三层,即传感器、连接和数据分析。虽然该课程针对的是电子与电气工程(EEE)和计算机科学(CS)的研究生,但我们的学生群体非常多样化,学生已经完成了物理,电信和信息技术等领域的第一个学位。该课程的一个独特之处在于与主要行业合作伙伴的紧密合作,其中一些积极参与课程交付。事实证明,这门课程是一个受欢迎的选择,并得到了学生们强烈的积极反馈。
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引用次数: 2
期刊
2019 26th International Conference on Telecommunications (ICT)
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