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2020 International Conference on Radar, Antenna, Microwave, Electronics, and Telecommunications (ICRAMET)最新文献

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Measuring the Effect of Elementary Descriptive Attributes on News Recommender Systems 衡量基本描述性属性对新闻推荐系统的影响
Hani Febri Mustika, Yulia Aris Kartika, Ika A. Satya, L. Manik, A. F. Syafiandini, Foni Agus Setiawan, Zaenal Akbar, D. R. Saleh
Information overload and information obscuring are two most recent challenges in finding relevant information from the Internet. Moreover, specifically in the online news industry, using sensationalist and eye-catching headlines for click-baiting has become a common practice. Finding relevant information is becoming harder than ever before. A solution to overcome the challenge is by utilizing a news recommender system. In most of the news recommender systems, a certain number of data attributes is required to produce appropriate decisions. Unfortunately, this is not always the case, especially when users are not required to register to a news portal. In this case, valuable information that can be used to make decisions, such as users’ preferences, visit or reading histories, will not be available. Therefore, in this paper, we take advantage of the elementary descriptive attributes of news articles, namely titles and keywords. We compare how these attributes affect the decision results, namely the recommended related news. We collected news articles from a news portal, generated two sets of related news using different compositions of descriptive attributes, and compared them to the originally defined set. Our findings indicate that the combination of titles and keywords produces highly relevant news which achieved a mean rating value close to 3 (on a scale of 1 to 5). Whereas the original recommended related news only has a mean rating value around 1. The combination produces better results compared to the original recommended related news which is highly affected by news categories. Our findings also revealed that the presence of specific entities (such as a person, location) in the titles has a significant impact on the outcome. This work has a wide spectrum of potential applications in the future, for example for automatic news aggregation, combating spam, reading context understanding, and so on.
信息过载和信息模糊是在互联网上查找相关信息的两个最新挑战。此外,特别是在网络新闻行业,利用耸人听闻和引人注目的标题来吸引点击已经成为一种常见的做法。查找相关信息比以往任何时候都要困难。克服这一挑战的一个解决方案是利用新闻推荐系统。在大多数新闻推荐系统中,需要一定数量的数据属性来产生适当的决策。不幸的是,情况并非总是如此,特别是当用户不需要注册到新闻门户时。在这种情况下,可用于做出决策的有价值的信息(如用户的偏好、访问或阅读历史)将不可用。因此,在本文中,我们利用了新闻文章的基本描述属性,即标题和关键词。我们比较这些属性如何影响决策结果,即推荐的相关新闻。我们从新闻门户网站收集新闻文章,使用不同的描述性属性组合生成两组相关新闻,并将它们与最初定义的新闻集进行比较。我们的研究结果表明,标题和关键词的组合产生了高度相关的新闻,其平均评级值接近3(在1到5的范围内),而原始推荐的相关新闻的平均评级值仅在1左右。与受新闻类别影响较大的原始推荐相关新闻相比,该组合产生了更好的结果。我们的研究结果还表明,标题中特定实体(如人、地点)的存在对结果有重大影响。这项工作在未来有广泛的潜在应用,例如自动新闻聚合、打击垃圾邮件、阅读上下文理解等。
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引用次数: 0
[Copyright notice] (版权)
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引用次数: 0
Quantification of Physical Blockage Based on Digital Surface Model (DSM) Dataset 基于数字表面模型(DSM)数据集的物理阻塞量化
Rumadi Rumadi, Kamirul Kamirul, Farid Armin, Stevry Yushady CH Bissa, Suisbiyanto Prasetya
In this paper, we introduced a new approach for quantifying the amount of physical blockage surrounding a certain ground station. This type of blockage is important to be analyzed since it could reduce the duration of communication between ground stations and satellites. The amount of physical blockage has been calculated by employing a Digital Surface Model (DSM) dataset. The DSM enables the calculation of elevation offset between a ground station to its surrounding natural and man-made objects. Based on the simulation, the accuracy of the proposed approach is capable of resulting in 93.1% of accuracy. Apart from quantifying the amount of physical blockage for a certain point, the proposed approach has also been applied to map the distribution of physical blockage on the entire study area, Biak Island, Indonesia. It is found that the generated map can be used for determining a suitable location for building a ground station site.
本文介绍了一种量化某地面站周围物理阻塞量的新方法。分析这种类型的阻塞很重要,因为它可以缩短地面站和卫星之间的通信时间。采用数字表面模型(DSM)数据集计算了物理堵塞量。DSM可以计算地面站与其周围自然和人造物体之间的高程偏移。仿真结果表明,该方法的精度可达93.1%。除了对某一点的物理阻塞量进行量化外,所提出的方法还被用于绘制印度尼西亚Biak岛整个研究区域的物理阻塞分布图。结果表明,生成的地图可用于确定地面站选址的合适位置。
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引用次数: 0
Path Loss Model of the Maritime Wireless Communication in the Seas of Indonesia 印尼海域海上无线通信的路径损耗模型
A. Mitayani, G. N. Nurkahfi, Mochamad Mardi Marta Dinata, V. A. Mardiana, N. Armi, Chaeriah Bin Ali Wael, Arief Suryadi Satyawan
Maritime wireless communication establishment in the seas of Indonesia has already been under investigation. It is useful for supporting some activities in the sea, such as monitoring and surveillance, fishery, and exploration. Propagation characteristics in maritime environment is different from one in the land therefore needed to be studied more. One important aspect in maritime radio propagation is path loss caused by sea movement. Sea movement in the seas of Indonesia varies from smooth to rough according to Douglas sea scale. The rougher the sea movement, the severer the path loss that happens in radio propagation. In this paper, the effect of path loss to the performance of wireless communication in maritime environment is investigated. Simulations based on some scenarios of propagation are also performed and analyzed.
印尼海域的海上无线通信设施已经在调查之中。它有助于支持一些海上活动,如监测和监视、渔业和勘探。海洋环境与陆地环境的传播特性不同,需要进一步研究。海上无线电传播的一个重要方面是海面运动引起的路径损耗。根据道格拉斯海标,印尼海域的海水运动从平滑到粗糙不等。海面运动越剧烈,无线电传播中的路径损失就越严重。本文研究了海洋环境下路径损耗对无线通信性能的影响。并对一些传播场景进行了仿真分析。
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引用次数: 3
Dual Band Implantable Antenna for Biomedical Telemetry Applications 生物医学遥测应用的双波段植入式天线
Katsinos Konstantinos
This work presents a miniaturized dual band implantable antenna operating at the Medical Device Radiocommunications Service (MedRadio) and Industrial Scientific Medical (ISM) band which is designed for chest implantation applications, such as pacemakers. A broad bandwidth (BW) of 38.7MHz in the MedRadio band and 69.2MHz in the ISM band is achieved. The volume of the antenna is 29mm3 and is designed inside a three-layer cubic phantom model, using the Ansoft HFSS suite software, based on Finite-Element method (FEM).
这项工作提出了一种小型化的双频植入式天线,工作在医疗设备无线电通信服务(MedRadio)和工业科学医疗(ISM)频段,专为胸部植入应用而设计,如起搏器。在MedRadio频段实现38.7MHz的宽带带宽,ISM频段实现69.2MHz的宽带带宽。天线的体积为29mm3,采用基于有限元法的Ansoft HFSS套件软件,在三层立方体模型内进行设计。
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引用次数: 1
Filtering Power Divider Composed of SIW-based Bandpass Filter for WLAN Application 基于siw的带通滤波器组成的滤波功率分配器在WLAN中的应用
Arief Budi Santiko, A. Munir
The future wireless communication system which leads to focus on Wireless Local Area Network (WLAN) research in that area is very fast. The development of WLAN equipment's including antennas, power dividers, and filters has raced to deliver the device to be compact, lightweight and low-cost. In this paper, a power divider integrated with filtering process, named as filtering power divider (FPD), is developed for 5.8 GHz WLAN application. In order to have compact size of device, the proposed FPD is composed of bandpass filter (BPF) made of Substrate Integrated Waveguide (SIW). The SIW-based BPF which is designed to work at the frequency of 5.8GHz designed to make the output as impedance matching network. The design was carried out using simulation software to investigate the effect of different parameters of filter to the filtering process as well as the output response of FPD. The characterization results show that the operating frequency, bandwidth response and isolation of the output ports of proposed FPD are 5.8GHz, 90MHz and 19dB, respectively. In addition, the presented FPD has advantages of compact, easy fabrication, and easy integration with other circuits.
未来无线通信系统的发展非常迅速,无线局域网(WLAN)的研究成为人们关注的焦点。包括天线、功率分配器和滤波器在内的无线局域网设备的发展已经竞相使设备变得紧凑、轻便和低成本。本文针对5.8 GHz无线局域网的应用,开发了一种集成滤波过程的功率分配器,称为滤波功率分配器(FPD)。为了使器件体积更小,所提出的FPD由衬底集成波导(SIW)制成的带通滤波器(BPF)组成。基于siw的BPF设计工作频率为5.8GHz,使输出成为阻抗匹配网络。利用仿真软件进行了设计,研究了滤波器的不同参数对滤波过程和FPD输出响应的影响。表征结果表明,该FPD输出端口的工作频率为5.8GHz,带宽响应为90MHz,隔离度为19dB。此外,所提出的FPD具有结构紧凑、制作简单、易于与其他电路集成等优点。
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引用次数: 3
Performance Evaluation of Radio Resource Allocation Algorithm for 5G Device-to-Device Communication Underlying on 4G LTE Networks 基于4G LTE网络的5G设备对设备通信无线资源分配算法性能评估
Mohamad Yasin Ramadhan, M. I. Nashiruddin
One of the advanced features of 5G technology is the Device-to-Device (D2D) communication, which capable of serving peer to peer communication, and D2D pair can communicate directly without having to pass through the Base Transceiver Station by re-using the frequency spectrum (resource) from the cellular user. D2D communication led to significant interference on mobile networks when sharing radio resources, and precise radio resource allocation requires algorithms to reduce interference. This study aims to evaluate the most optimal radio resource allocation algorithm of 5G D2D communication underlying on a 4G LTE network using heuristic algorithms, minimum interference algorithms, and random allocation algorithms. Each algorithm tested with the scenario that involved variations of the cell radius distance, the value of data rate, fairness, and energy efficiency to determine the most optimal algorithm. The result shows that the higher amount of cell radius distance in a system makes the value of the system's data rate, fairness, and energy efficiency smaller because the gain on the device in the system also becomes smaller. Heuristic algorithms were having better data rates and energy efficiency compared to other algorithms. Therefore, it is suitable to be used when the level of system complexity is high. However, it works less optimally when a system has a vast cell radius because the heuristic algorithm's performance value tends to decrease with a more significant difference at each increase.
5G技术的先进特性之一是设备对设备(D2D)通信,它能够服务于点对点通信,D2D对可以通过重复使用蜂窝用户的频谱(资源)而无需经过基站收发器站直接通信。D2D通信在共享无线资源时,会对移动网络造成较大干扰,而精确的无线资源分配需要算法来减少干扰。本研究旨在利用启发式算法、最小干扰算法和随机分配算法,评估基于4G LTE网络的5G D2D通信的最优无线电资源分配算法。每种算法在涉及小区半径距离、数据速率值、公平性和能源效率的变化的场景中进行测试,以确定最优算法。结果表明,系统中的小区半径距离越长,系统的数据速率、公平性和能效的值越小,因为系统中设备的增益也越小。与其他算法相比,启发式算法具有更好的数据速率和能源效率。因此,适合在系统复杂程度较高的情况下使用。然而,当系统具有巨大的单元半径时,它的效果就不那么理想了,因为启发式算法的性能值往往会随着每次增加而降低,差异更显著。
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引用次数: 0
Effect of Loading on the RCS of Coplanar Antenna Structures 载荷对共面天线结构RCS的影响
Zaed S. A. Abdulwali, M. Alkanhal
This paper explores the effect of load terminations on the scattering from antenna structures with sizable metallic surfaces. The concept of antenna scattering decomposition into structural and reradiated scattered fields is used to ascertain the behavior of the radar cross section (RCS) of a metallic coplanar antenna structure with variable loadings. Then, a general analytical load condition that minimizes the bistastic radar cross section of the coplanar antenna structure is derived. The derived formula is used to obtain the regions of feasible passive loads for zero/minimum backscattering for the ultra-wide band (UWB) coplanar antenna. The backscattering minimization levels of this antenna is examined to validate the analytical formula. The results demonstrate the validity of the procedure with almost zero backscattering for the antenna with evident RCS reduction factors. Comparisons between the minimum RCS antenna with antennas of different loadings and with equivalent area metallic plates are presented.
本文探讨了载荷终止对具有较大金属表面的天线结构散射的影响。利用天线散射分解为结构散射场和辐射散射场的概念,确定了金属共面天线结构在变载荷作用下的雷达截面特性。然后,导出了使共面天线结构的双稳态雷达截面最小的一般解析载荷条件。利用导出的公式求出了超宽带共面天线零/最小后向散射可行无源负载区域。对该天线的后向散射最小化水平进行了验证。结果表明,对于RCS减小系数明显的天线,该方法的后向散射几乎为零。比较了最小RCS天线与不同载荷的天线和具有等面积金属板的天线。
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引用次数: 1
Generative Adversarial Network with Residual Dense Generator for Remote Sensing Image Super Resolution 基于残差密集生成器的生成对抗网络遥感图像超分辨率研究
Rika Sustika, A. B. Suksmono, D. Danudirdjo, K. Wikantika
Improving image resolution, especially spatial resolution, has been one of the most important concerns on remote sensing research communities. An efficient solution for improving spatial resolution is by using algorithm, known as super-resolution (SR). The super-resolution technique that received special attention recently is super-resolution based on deep learning. In this paper, we propose deep learning approach based on generative adversarial network (GAN) for remote sensing images super resolution. We used residual dense network (RDN) as generator network. Generally, deep learning with residual dense network (RDN) gives high performance on classical (objective) evaluation metrics meanwhile generative adversarial network (GAN) based approach shows a high perceptual quality. Experiment results show that combination of residual dense network generator with generative adversarial network training is found to be effective. Our proposed method outperforms the baseline method in terms of objective and perceptual quality evaluation metrics.
提高图像分辨率,特别是空间分辨率,一直是遥感研究界关注的焦点之一。一种提高空间分辨率的有效方法是使用超分辨率算法。近年来备受关注的超分辨率技术是基于深度学习的超分辨率技术。在本文中,我们提出了基于生成对抗网络(GAN)的遥感图像超分辨率深度学习方法。我们使用残差密集网络(RDN)作为生成网络。一般来说,残差密集网络(RDN)深度学习在经典(客观)评价指标上表现优异,而基于生成对抗网络(GAN)的深度学习则表现出较高的感知质量。实验结果表明,残差密集网络生成器与生成式对抗网络训练相结合是有效的。我们提出的方法在客观和感知质量评价指标方面优于基线方法。
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引用次数: 3
Further Investigation of The Feasibility of Using EBG Structure-Based Microstrip Antenna for Gain Enhancement 利用EBG结构微带天线增强增益可行性的进一步研究
Y. Alnaiemy, L. Nagy
This paper discusses the feasibility of metamaterial-based rectangular microstrip antenna for gain and aperture efficiency enhancement. To improve the proposed antenna gain, a 3×3 array based on Electromagnetic Band Gap (EBG) metamaterials is implemented as a single planar array covering the radiating patch antenna. The proposed antenna is mounted on a FR4 substrate backed with a fully copper ground plane, and the radiating patch antenna is excited via SMA connector. The antenna is designed to operate at 5.8 GHz to match the WLAN and WiMAX applications. The microstrip antenna is loaded with Semi-H shaped unit cells of EBG structures. The antenna performance before and after adding the EBG structure is investigated in terms of reflection coefficient ($11), radiation pattern, bandwidth, aperture efficiency, and boresight gain. The antenna based on EBG structure is provided boresight gain enhancement from 1.8 dBi to 11.4 dBi for the frequency of interest. Since the introduction of the EBG structure with the conventional square patch antenna the proposed antenna has been achieved another achievement by enhancing the aperture efficiency from 3.2% to 29.6% and increase the bandwidth by 85 MHz and improving the Half Power Beam Width (HPBW) from 112° to 34° and 136° to 66° along the elevation (θ) and azimuth directions (φ), respectively
讨论了基于超材料的矩形微带天线提高增益和孔径效率的可行性。为了提高天线增益,将基于电磁带隙(EBG)超材料的3×3阵列实现为覆盖辐射贴片天线的单平面阵列。该天线安装在全铜接平面的FR4基板上,辐射贴片天线通过SMA连接器进行激励。该天线设计工作在5.8 GHz,以匹配WLAN和WiMAX应用。微带天线加载了半h型的EBG结构单元格。从反射系数($11)、辐射方向图、带宽、孔径效率和轴视增益等方面研究了加入EBG结构前后的天线性能。基于EBG结构的天线对目标频率的视轴增益从1.8 dBi增强到11.4 dBi。自采用传统方形贴片天线的EBG结构以来,该天线的孔径效率从3.2%提高到29.6%,带宽增加85 MHz,半功率波束宽度(HPBW)沿仰角(θ)和方位角(φ)分别从112°和136°提高到34°和66°
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引用次数: 2
期刊
2020 International Conference on Radar, Antenna, Microwave, Electronics, and Telecommunications (ICRAMET)
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