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2017 11th International Conference on Telecommunication Systems Services and Applications (TSSA)最新文献

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Effect of overhead flooding on NDN forwarding strategies based on broadcast approach 架空泛洪对基于广播方式的NDN转发策略的影响
S. Ahdan, H. Situmorang, N. Syambas
At this time forwarding strategy became the center of attention of researchers in area named data networking (NDN). This is because the forwarding strategy is responsible for managing every packet of interest received by the NDN router, then the characteristics of forwarding strategies will have a significant impact on NDN performance. Therefore this study aims to perform analysis using a large approach in forwarding strategy that is broadcast approach. It is expected that the results of this study can be utilized by researchers in the field of NDN to determine the direction of research. Parameter of study in this research is delay in observation time interval. A forwarding strategy using a broadcast approach is simulated in order to understand the NDN delay characteristics within the observation interval. The simulation of the research was conducted on the NDNSim simulator with several scenarios. From the simulation results obtained that cumulatively delay broadcast forwarding strategy in multi producer scenario there is no difference between fulldelay and lastdelay. However, in the single producer scenario there is a difference between fulldelay and lastdelay this can be influenced by the large number of consumers who send interest to the producer and also based on the flooding method of the interest package in order to find the nearest NDN router containing the expected content as soon as possible, So that it can overload the network performance and effects overhead.
此时,转发策略成为数据网络领域研究人员关注的焦点。这是因为转发策略负责管理NDN路由器接收到的每个感兴趣的数据包,因此转发策略的特性将对NDN性能产生重大影响。因此,本研究旨在使用转发策略中的一种大方法即广播方法进行分析。期望本研究的结果可以被NDN领域的研究者用来确定研究方向。本研究的研究参数为观测时间间隔的延迟。为了了解NDN在观测区间内的延迟特性,对一种使用广播方法的转发策略进行了仿真。本研究在NDNSim模拟器上进行了多个场景的仿真。仿真结果表明,在多生产者场景下,累积延迟广播转发策略的fulldelay和lastdelay没有区别。然而,在单个生产者场景中,fulldelay和lastdelay之间存在差异,这可能受到大量消费者向生产者发送兴趣的影响,并且基于兴趣包的泛洪方法,以便尽快找到包含预期内容的最近的NDN路由器,因此它可以过载网络性能和效果开销。
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引用次数: 6
Desinge and implementation of government cloud computing requirements: TOGAF 政府云计算需求的设计和实现:TOGAF
Bader Alghamdi, L. Potter, Steve Drew
Digital technologies, such as cloud computing, have transformed business activities, particularly in the public domain. In the corporate sector, where cloud computing technology has long been implemented, some organisations have succeeded, while others have been less successful. Saudi Arabia has enthusiastically supported the move to cloud computing technology; however, from a business perspective, its implementation of government cloud technology is still relatively nascent and has faced numerous challenges. The existing literature suggests that the government cloud migration depends not only on project drivers, but also on considerable barriers, which often delay successful implementation. Furthermore, many current barriers and drivers clearly involve the roles of cloud vendors, meaning that cloud vendors must be fully engaged in order to develop comprehensive solutions. Addressing this phenomenon from the lens of enterprise architecture (EA) may support the development of appropriate deployment requirements for optimal government cloud implementation. Thus, this paper is a research in progress that analyses the major barriers and drivers affecting cloud implementation in public organisations, taking into consideration the perspectives of cloud consumers and vendors. This paper also introduces a mapping conceptual model throughout The Open Group Architecture Framework (TOGAF) that supports a novel framework for tackling these barriers and their influences and enhancing drivers via a set of requirements.
云计算等数字技术已经改变了商业活动,特别是在公共领域。在企业部门,云计算技术已经实施了很长时间,一些组织取得了成功,而另一些组织则不太成功。沙特阿拉伯热情地支持向云计算技术的转变;然而,从业务角度来看,其政府云技术的实施仍处于相对初级阶段,面临诸多挑战。现有文献表明,政府云迁移不仅取决于项目驱动因素,还取决于相当大的障碍,这些障碍往往会延迟成功实施。此外,许多当前的障碍和驱动因素显然涉及到云供应商的角色,这意味着云供应商必须充分参与,以开发全面的解决方案。从企业架构(EA)的角度解决这一现象可能有助于开发适当的部署需求,以实现最佳的政府云实现。因此,本文是一项正在进行的研究,分析了影响公共组织中云实施的主要障碍和驱动因素,同时考虑了云消费者和供应商的观点。本文还在开放组体系结构框架(TOGAF)中引入了一个映射概念模型,该模型支持一个新的框架来解决这些障碍及其影响,并通过一组需求增强驱动。
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引用次数: 7
Comparison between three methods of pilot-aided demodulation 三种导频辅助解调方法的比较
A. Spalvieri
Coherent optical and radio systems suffer from phase noise introduced by radio frequency oscillators or lasers used for up-conversion and down-conversion. In strong phase noise conditions, cycle slips of the recovered carrier appear, leading to error floor. Pilot symbols are known to be an effective countermeasure against cycle slips. In this paper we compare the performance of three pilot-aided demodulation schemes. The results show that the trellis based method outperforms the competitors.
相干光学和无线电系统受到用于上转换和下转换的射频振荡器或激光器引入的相位噪声的影响。在强相位噪声条件下,恢复载波出现周期滑移,导致误差底限。导航仪符号被认为是防止周期滑动的有效对策。本文比较了三种导频辅助解调方案的性能。结果表明,基于网格的方法优于竞争对手的方法。
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引用次数: 0
Statistical test on lightweight block cipher-based PRNG 基于轻量级分组密码的PRNG统计检验
Y. S. S. Risqi, Susila Windarta
In this paper, a comparison of three Pseudo Random Number Generator (PRNG) based on SIMON-64, SPECK-64 and SIMECK-64 using PGV-5 scheme is presented. We use NIST randomness test suites sts-2.1.1 which consists of 15 statistical tests. According to the test results, SIMON-64-PGV-5 and SIMECK-64-PGV-5 PRNG pass all tests but SPECK-64-PGV-5 PRNG does not pass Random Excursions test. SIMON-64-PGV-5 and SIMECK-64-PGV-5 PRNG have good randomness properties.
本文对基于PGV-5方案的SIMON-64、SPECK-64和SIMECK-64三种伪随机数发生器(PRNG)进行了比较。我们使用NIST随机测试套件sts-2.1.1,包含15个统计测试。测试结果显示,SIMON-64-PGV-5和SIMECK-64-PGV-5 PRNG均通过测试,而SPECK-64-PGV-5 PRNG未通过Random Excursions测试。SIMON-64-PGV-5和SIMECK-64-PGV-5 PRNG具有良好的随机性。
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引用次数: 6
Statistical comparison of grain algorithm for IoT device security 物联网设备安全粒度算法的统计比较
A. Kusyanti, Rakhmadhany Primananda, A. Bhawiyuga, Ajeng Nurrohmah
Internet of Things (IoT) is an interconnection among devices or “things” that exchange data between them. A man-in-the-middle can be performed when two IoT devices are communicating, therefore secure data transmission between IoT devices has emerged as a challenging task. There are numbers of existing cryptography algorithms that offers protection. However, their utilization in IoT is questionable since the hardware is not suitable for inexpensive yet efficient encryption process. This paper proposed implementation of Grain as the winner for eSTREAM project and compare all version of Grain, i.e Grain v0, Grain v1 and Grain 128 in Arduino Mega 2560 as it used as a single board computer for IoT. The result shows that there is no significant difference in encryption-decryption processing time. While, in generating keystream, Grain 128 will take more time when implemented in Arduino Mega 2560.
物联网(IoT)是设备或“事物”之间的互连,它们之间交换数据。当两个物联网设备通信时,可以执行中间人操作,因此物联网设备之间的安全数据传输已成为一项具有挑战性的任务。有许多现有的加密算法提供保护。然而,它们在物联网中的应用是有问题的,因为硬件不适合廉价但高效的加密过程。本文提出将Grain作为eSTREAM项目的赢家实现,并在Arduino Mega 2560中比较了所有版本的Grain,即Grain v0, Grain v1和Grain 128,因为它用作物联网的单板计算机。结果表明,两者在加解密处理时间上没有显著差异。而在生成密钥流时,在Arduino Mega 2560中实现时,Grain 128将花费更多时间。
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引用次数: 0
Low cost wireless parking module design and implementation 低成本无线停车模块的设计与实现
Giva Andriana Mutiara, A. Agung, Rini Handayani
Finding a parking space in a large parking area becomes a problem for a driver these days. This paper presents a design and implementation for a low cost, wireless parking module, which contains of a parking sensor to detect a vehicle, and an LED display available parking space. This module uses a PING ultrasonic sensor and a NodeMCU as a microcontroller. The module connected wirelessly to the main server via a router. The module should cost less than average retail prices of similar module available on the market. A better approach for the vehicle detection scenario is also presented as a result.
如今,在大型停车场找到停车位对司机来说是个难题。本文介绍了一种低成本无线停车模块的设计与实现,该模块包含一个检测车辆的停车传感器和一个显示可用停车位的LED显示屏。该模块采用PING超声波传感器和NodeMCU作为微控制器。该模块通过路由器无线连接到主服务器。该模块的成本应低于市场上同类模块的平均零售价格。最后提出了一种更好的车辆检测方案。
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引用次数: 3
Service level measurement based on Uptime data monitoring for rural internet access services in Indonesia 基于印尼农村互联网接入服务正常运行时间数据监测的服务水平测量
Christophorus Ivan Samuels, N. Syambas, Hendrawan, I.Y.M. Edward, Iskandar, W. Shalannanda
As an archipelago country, Indonesia still has many islands which do not have proper infrastructure. This situation creates a huge digital divide which made rural areas often are lagging behind from the cities in terms of economy and public health. To bridge this gap, a government organization initiated a program to provide internet access in rural areas, which then joined by many ISPs. Problem arose when initial method to calculate service level, which based on Ping sensor downtime, cannot be implemented. While the method can detect a failure, it cannot identify a failure which caused by power failure or by transmission (link) failure, so the service level will be significantly lower than it should be. Whereas, the service contract clearly says that the failure which caused by power cannot be charged to ISPs (tolerance factor). To accommodate the contract, a new method to calculate service level shall be made. This paper proposes a new method based on Uptime sensor downtime, which can be collected from Network Management System (NMS). The new method observes the duration of a device's uptime over time and gives different and unique visualization for each type of failure, transmission or power failure. This allow us to calculate service level objectively and effectively. The method gives remarkably improvement in terms of service level percentage. As a comparison, in a simulation test a new method gave 97,5% service level while the old method which based on Ping downtime gave 56% of service level. The huge difference is attributed to many power failures which cannot be identified by the old method and eventually cannot be emitted from the service level calculation.
作为一个群岛国家,印度尼西亚仍然有许多岛屿没有适当的基础设施。这种情况造成了巨大的数字鸿沟,使农村地区在经济和公共卫生方面往往落后于城市。为了弥补这一差距,一个政府组织发起了一个在农村地区提供互联网接入的项目,随后许多互联网服务提供商也加入了这个项目。基于Ping传感器停机时间计算服务水平的初始方法无法实现时,出现了问题。虽然该方法可以检测到故障,但它不能识别由电源故障或传输(链路)故障引起的故障,因此服务水平将大大低于应有的水平。然而,服务合同明确规定,由于电力引起的故障不能由isp承担(容差系数)。为适应合同的要求,需要制定新的服务水平计算方法。本文提出了一种基于正常运行时间传感器停机时间的新方法,该方法可以从网络管理系统(NMS)中收集停机时间。新方法观察设备正常运行时间的持续时间,并为每种类型的故障、传输或电源故障提供不同且独特的可视化。这使我们能够客观有效地计算服务水平。该方法在服务水平百分比方面有显著提高。在模拟测试中,新方法的服务水平为97.5%,而基于Ping停机时间的旧方法的服务水平为56%。这种巨大的差异是由于许多电力故障无法被旧方法识别,最终无法从服务水平计算中释放出来。
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引用次数: 4
Artificial dielectric material and its implementation for TEio mode waveguide filter TEio模式波导滤波器的人工介电材料及其实现
M. R. Hidayat, A. D. Setiawan, Sofyan Basuki, A. Munir
In this paper, a study on artificial dielectric material and its implementation for a TE10 mode waveguide filter are proposed numerically and experimentally. The use of artificial dielectric material for waveguide filter implementation is intended to produce lower frequency response of filter without enlarging the dimension of waveguide. The filter is designed using a rectangular waveguide which has the width of 72.4 mm and the height of 34 mm with the TE10 cut-off frequency of 2.08GHz. Two identical resonators are inserted into the waveguide and separated in a specific distance. Each resonator is composed of three parts where the left and right parts are made of FR4 epoxy substrate with the same percentage of dimension. Meanwhile, the middle part is made of dielectric material with modified permittivity value using artificial dielectric material of Split Ring Resonator (SRR). The parametric studies are carried out through simulation by changing the distance between resonators and the thickness of resonators. From the measurement, it shows that the frequency response of filter were shifted lower at 1.74GHz with the values of S11 and S21 are −15dB and −3dB, respectively.
本文从数值和实验两方面对用于TE10模波导滤波器的人工介质材料及其实现进行了研究。采用人工介质材料实现波导滤波器的目的是在不增大波导尺寸的情况下降低滤波器的频率响应。该滤波器采用宽72.4 mm、高34 mm的矩形波导设计,TE10截止频率为2.08GHz。在波导中插入两个相同的谐振器,并以特定的距离分开。每个谐振器由三部分组成,其中左右部分由尺寸百分比相同的FR4环氧基板制成。同时,中间部分采用劈裂环谐振器(SRR)的人工介电材料,采用修正介电常数的介电材料制成。通过改变谐振腔之间的距离和谐振腔的厚度,仿真地进行了参数化研究。测量结果表明,滤波器的频率响应在1.74GHz处发生了低移,S11和S21的值分别为- 15dB和- 3dB。
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引用次数: 7
Aspiration and complaint system: From literature survey to implementation 愿望与投诉制度:从文献调查到实施
I. Zakia, Asep Hikman Fatahillah, N. Syambas, Asih Setiawati, Housny Mubarok
The culture in an organization influence the intention of employees to give useful information or report any unethical and illegal behaviors performed by their colleagues or leaders in the organization. This limits the freedom of the employees in expressing their opinions which can further affect the performance of the organization. It is required to have a whistleblower system where the employees can express their opinions efficiently, effectively, and anonymously. In this paper, we study existing whistleblower systems that are already used in several organizations. We further identify which system is most suited to our organization in School of Electrical Engineering and Informatics (SEEI), Institut Teknologi Bandung (ITB). We develop the standard operating procedure (SOP) for accomodating aspiration and complaint from the SEEI civitas. Based on this SOP, we adopt the Globaleaks whistleblower system as the Aspiration and Complaint System (ACS) in SEEI ITB.
组织中的文化影响员工提供有用信息或报告其同事或领导在组织中执行的任何不道德和非法行为的意图。这限制了员工表达意见的自由,进而影响组织的绩效。有必要建立员工能够高效、有效、匿名地表达意见的举报制度。在本文中,我们研究了已经在几个组织中使用的现有举报人制度。我们进一步确定哪个系统最适合我们在万隆理工学院电子工程与信息学院(SEEI)的组织。我们制定了标准操作程序(SOP),以适应SEEI公民的愿望和投诉。在此SOP的基础上,我们采用了global leaks举报人制度作为SEEI ITB的期望与投诉制度(ACS)。
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引用次数: 3
Performance and implementation of a FPGA-based cross polar interference canceller 基于fpga的交叉极干扰消除器的性能与实现
A. Spalvieri
Radio transmission on V and H polarizations is a well known technique to double channel capacity in point-to-point microwave radio systems. Due to non-ideal separation between the two polarizations, co-channel interference arises and must be dealt with at the receive side. Here we report the results of a FPGA-based coded modulation system that employs interference cancellation. The results show that the performance of the implemented system is close to the computed one and meets ETSI specifications with large margin.
在点对点微波无线电系统中,V和H极化的无线电传输是一种众所周知的双信道容量技术。由于两个极化之间的非理想分离,产生了同信道干扰,必须在接收端处理。在这里,我们报告了一个基于fpga的编码调制系统的结果,该系统采用干扰抵消。结果表明,所实现的系统性能与计算结果接近,并满足ETSI的要求。
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引用次数: 0
期刊
2017 11th International Conference on Telecommunication Systems Services and Applications (TSSA)
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