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Dynamic Spatial Diversity Combiner pada Kanal Fading 动态空间分集与通道衰落相结合
Pub Date : 2019-09-30 DOI: 10.26760/elkomika.v7i3.466
Dwi Aryanta, Rienzy Pratama Londong Allo
ABSTRAKKanal transmisi radio berkontribusi pada terjadinya efek fading yang dapat berpengaruh pada terjadinya penurunan kualitas sinyal pada penerima. Salah satu solusi yang digunakan untuk menekan efek fading adalah penggunaan Spatial Diversity di sisi penerima. Pada penelitian ini digunakan suatu teknik Dynamic Spatial Diversity Combining yang memadukan Selection Combining, Equal Gain Combining, dan Maximal Ratio Combining untuk mendapatkan kinerja combiner yang lebih efektif dan efisien. Simulasi dilakukan dengan menggunakan modulasi BPSK pada beberapa jenis kanal yaitu Rayleigh, Rician, Nakagami-m, Weibull, dan Suzuki. Hasil simulasi MATLAB menunjukkan bahwa secara umum kanal yang mendapatkan perbaikan kinerja penerimaan, dimana nilai terendah sebesar 2 dB terjadi pada kanal Suzuki dan tertinggi sebesar 4 dB pada kanal Weibull.Kata kunci: fading, spatial diversity, rayleigh, rician, weibull, nakagami, suzuki. ABSTRACTRadio transmission channels contribute to the occurrence of fading effects that can affect the decrease in signal quality at the receiver. One solution that is used to suppress fading effects is the use of Spatial Diversity on the receiving side. In this research, a Dynamic Spatial Diversity Combining technique is used which combines Selection Combining, Equal Gain Combining, and Maximal Ratio Combining to get a more effective and efficient combiner performance. Simulation is done using BPSK modulation on several types of canals, namely Rayleigh, Rician, Nakagamim, Weibull, and Suzuki. The MATLAB simulation results show that in general canals that get improved performance, where the lowest value of 2 dB occurs on the Suzuki channel and the highest is 4 dB on the Weibull canal.Keywords: fading, spatial diversity, rayleigh, rician, weibull, nakagami, suzuki.
无线电传输中断导致了一种影响,这种影响可能会导致接收器信号质量的下降。抑制可变影响的解决方案之一是接受者一侧的空间增量的使用。这项研究使用的是一种广泛的空间分散技术,它结合了各向结合、均等增益联合和最大比例联合,以获得更有效和更有效的混合性能。模拟使用了一些运河的b妓女调制,如Rayleigh, Rician, Nakagami-m, Weibull和Suzuki。MATLAB的模拟结果表明,一般来说,运河的入学率提高了,在那里,铃木运河的入学率最低,而在Weibull运河的入学率最高。关键词:fading,空间多样性,rayleigh, rician, weibull, nakagami, suzuki。缺席会影响接收器高强度信号的损害。其中一种解决方案是利用现有的空间多样性。在这项研究中,一种动态空间多元化联合技术已被使用,该公司正在使用,以获得更有效和最有效的组合表现。模拟是在加拿大的several types、namely Rayleigh、Rician、Nakagamim、Weibull和Suzuki上使用bcock模块。MATLAB模拟结果显示,在普遍的加拿大,铃木海峡发生了2起dB事件,而highest则是Weibull运河上的4起dB事件。事实,空间多样性,雷,里西亚,威布尔,中川,铃木。
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引用次数: 1
Smoke and Fire Detection Base on Convolutional Neural Network 基于卷积神经网络的烟雾与火灾探测
Pub Date : 2019-09-30 DOI: 10.26760/elkomika.v7i3.455
E. S. Wahyuni, Muhammad Hendri
ABSTRAK Deteksi api dan asap adalah langkah pertama sebagai deteksi dini kebakaran. Deteksi dini kebakaran berdasarkan pemrosesan gambar dianggap mampu memberikan hasil yang efektif. Pilihan metode deteksi adalah kunci penting. Metode ekstraksi fitur berdasarkan analisis statistik dan analisis dinamis kadang-kadang memberikan akurasi kurang akurat dalam mendeteksi asap dan api, terutama pada deteksi asap, hal ini disebabkan oleh karakteristik objek asap yang transparan dan bergerak. Dalam penelitian ini, metode Convolutional Neural Network (CNN) diterapkan untuk deteksi asap dan api. Dari penelitian ini, diketahui bahwa CNN memberikan kinerja yang baik dalam deteksi kebakaran dan asap. Akurasi deteksi tertinggi diperoleh dengan menggunakan 144 data pelatihan, 20.000 iterasi dengan dropout. Kata kunci: Deteksi asap, deteksi kebakaran, Jaringan Syaraf Konvolusional ABSTRACT Fire and smoke detection is the first step as early detection of fires. Early detection of fire based on image processing is considered capable of providing effective results. The choice of detection method is an important key. Feature extraction methods based on statistical analysis and dynamic analysis sometimes provide less accurate accuracy in detecting smoke and fire, especially on smoke detection, this is due to the characteristics of transparent and moving smoke objects. In this study, the Convolutional Neural Network (CNN) method was applied for smoke and fire detection. From this study, it is known that CNN provides good performance in fire and smoke detection. The highest detection accuracy is obtained by using 144  training data, 20,000 iterations and dropout is true. Keyw ords: Smoke detection, Fire detection, Convolutional Neural Network
火灾探测和烟雾探测是早期火灾探测的第一步。根据图像处理及早发现火灾被认为是有效的结果。选择检测方法是关键。基于统计分析和动态分析的特征提取方法有时会提供不太准确的准确性来检测烟雾和火灾,尤其是在烟雾探测方面,这是由透明的移动物体特征引起的。在这项研究中,神经通路网络(CNN)的应用是探测烟雾和火灾。从这项研究中,我们了解到CNN在火灾和烟雾探测方面做得很好。最高检测准确率是使用144项培训数据,2万次重复的dropout。关键字:烟探测、火探测、两股对等放射性火灾探测是火探测的第一步。基于图像的早期火灾探测被认为是一种附带影响的表现。选择方法是一个重要的关键。基于统计分析和动态分析的方法提取方法有时是对烟雾探测和火灾的准确反应,特别是对烟雾探测的准确反应,这是最典型的活动和移动物体的特征。在这项研究中,神经通路网络(CNN)的方法是使用烟雾探测。从这项研究中,我知道CNN在火灾和烟雾探测中表现良好。最重要的探测是使用144项数据培训,2万次重复和下降是真实的。重点线索:烟探测,火探测,神经通路网络
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引用次数: 4
Proyeksi EXIT Chart untuk Memprioritaskan Data Komunikasi Manusia pada Jaringan Super Padat 投影图表,在高密度网络上优先考虑人类通信数据
Pub Date : 2019-09-30 DOI: 10.26760/elkomika.v7i3.508
Khoirun Ni’amah, S. Larasati
ABSTRAKPenelitian ini dilakukan untuk menguji jaringan masa depan dengan melibatkan ribuan mesin. Teknik Coded Random Access (CRA) akan dijadikan bagian penting pada teknologi komunikasi seluler generasi ke-5 (5G) tahun 2020 yang diprediksi data komunikasi manusia bercampur dengan mesin. CRA pada penelitian ini dipandang sebagai skema multiple access terbaru yang memanfaatkan coding (repetition dan MDS codes), penelitian ini berdasarkan repetition codes untuk mendesain sub-optimal degree distribution pada grup manusia dan mesin. Kinerja sistem dievaluasi menggunakan parameter proyeksi Extrinstric Information Transfer (EXIT) chart, throughput, dan packet-loss rate (PLR). Sub-optimal degree distribusi untuk grup manusia 𝛬􀯁􁈺𝑥􁈻􀵌0,3𝑥􀬷􀵅0,70,4𝑥􀬸. Throughput grup manusia tanpa fading 𝑇􀯛 􀵌𝑥0􀬼,,7 7g5ru ppa kmeet/ssinlo t 𝛬d􀯆e􁈺n𝑥g􁈻a􀵌n 0fa,6d𝑥i􀬶ng􀵅 𝑇􀯛 􀵌0,736 paket/slot dan grup mesin tanpa fading 𝑇􀯠􀵌0,669 paket/slot dengan fading 𝑇􀯠 􀵌0,646 paket/slot. Kontribusi penelitian ini sangat signifikan karena data pada komunikasi manusia dapat diprioritaskan yand dilihat dari kinerja deteksi paket yang diterima tanpa error (throughput) pada grup manusia lebih tinggi dibanding mesin.Kata kunci: Repetition codes , EXIT Chart, Degree Distribusi, Manusia, Mesin. ABSTRACTThis research considers future super-dense networks. Coded Random Access (CRA) technique is ecxpected to be important in fifth generation (5G) celullar communication in 2020 predicted that human data communication are mixed with machines. CRA as a new multiple accesss sheme which exploiting coding (repetition and MDS codes), this research is based on repetition codes for design sub-optimal degree distribution for human and machines groups. The performance of prioritized are evaluated based on parameters, e.g., projection Extrinsic Information (EXIT) chart, throughput, and packet-loss rate (PLR). Sub optimal degree distribution human 𝛬􀯁􁈺𝑥􁈻􀵌0,3𝑥􀬷􀵅0,7, machines 𝛬􀯆􁈺𝑥􁈻􀵌0,6𝑥􀬶􀵅0,4𝑥􀬸. Throughput human without fading 𝑇􀯛􀵌0,775 packet/slot with fading 𝑇􀯛 􀵌0,736 p0a,6c4k6e tp/aslcokte at/nsdlo tm. aTchhei nceo nwtirtihbouutito nfa odfi ntgh is𝑇 􀯠res􀵌ea0r,6ch6 9i sp saicgkneifti/csalontt wbeitcha ufased inthge 𝑇d􀯠at􀵌a on human communication can be prioritized as seen from the performance of correctly received packets (throughput) in the human group is higger than machines.Keywords: Repetition Codes, EXIT Chart, Degree Distribution, Human, Machines.
这个ABSTRAKPenelitian进行测试网络,涉及数千台的未来。Coded技术重要的随机访问(CRA),它将并入第五代移动通信技术(5G) 2020年的预测数据,人类与机器通信。CRA的最新的这项研究被视为多发性access计划利用编码(repetition MDS代码),这项研究基于repetition代码设计sub-optimal学位distribution在人类和机器组。系统性能使用外部信息传输参数(EXIT)、throughput和packet损失率(PLR)进行评估。人类Sub-optimal学位分配组𝛬􀯁􁈺𝑥􁈻􀵌0,3𝑥􀬷􀵅0,70,4𝑥􀬸。Throughput人类没有组渐逝𝑇􀯛􀵌𝑥0􀬼,7 7g5ru ppa kmeet / ssinlo t𝛬d􀯆e􁈺n𝑥g􁈻a􀵌n 0fa, 6d𝑥i􀬶ng􀵅𝑇􀯛􀵌0,736包-插槽和机器没有组渐逝𝑇􀯠􀵌0,669包裹-渐逝地槽𝑇􀯠􀵌0,646包裹-插槽。这项研究很重要,因为人体通信数据的贡献可以优先的绩效从收到的包裹,没有检测错误(throughput)集团的机器比人类要高得多。密码:重新编码,退出图表,分布式,人,机器。这个研究考虑的是未来的超级丹尼网络。Coded随机访问(CRA)技巧是ecxpected to be重要在第五generation (5G) celullar 2020 communication in communication是综合数据预测,以至于人类和机器。CRA,美国纽约多发性accesss sheme哪种exploiting (repetition与MDS的编码密码),这个研究是改编自repetition代码设计为sub-optimal学位distribution为了人类和机器集团。prioritized是evaluated之演出改编自parameters, e . g .,投射Extrinsic资讯网(出口)图表、throughput packet-loss率(PLR)。副学位distribution最佳人类𝛬􀯁􁈺𝑥􁈻􀵌0,3𝑥􀬷􀵅0,7,机器𝛬􀯆􁈺𝑥􁈻􀵌0,6𝑥􀬶􀵅0,4𝑥􀬸。无国界Throughput人类渐逝𝑇􀯛􀵌0,775 packet -插槽和渐逝𝑇􀯛􀵌0,736 p0a, 6c4k6e tp aslcokte at / nsdlo tm。aTchhei nceo nwtirtihbouutito nfa odfi ntgh是𝑇􀯠res􀵌ea0r, 6ch6 9i saicgkneifti sp - csalontt wbeitcha ufased inthge𝑇d􀯠at􀵌a on human communication演出》可以成为美国prioritized看到从correctly收到packets (throughput)《人类比机器集团是higger。安装:Repetition代码出境图表,学位Distribution,人类,机器。
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引用次数: 0
Sub-Optimal Degree Distribution untuk Prioritas Komunikasi Manusia menggunakan Proyeksi EXIT Chart pada Jaringan Masa Depan 人类通信优先级的次级Degree分配使用未来网络的外部图投射
Pub Date : 2019-09-30 DOI: 10.26760/elkomika.v7i3.442
S. Larasati, Khoirun Ni’amah
ABSTRAKPada jaringan masa depan melibatkan komunikasi antara mesin dan manusia. Penelitian ini mengusulkan konsep coding dalam jaringan menggunakan Maximum Distance Separable (MDS) codes. Desain sub-optimal degree distribution untuk memprioritaskan manusia menggunakan proyeksi EXIT Chart. Pada penelitian ini dasar dari skema multiple akses untuk jaringan super-padat menggunakan Coded Random Access (CRA). Usulan model jaringan menggunakan Binary Erasure Channel (BEC). Evaluasi performansi untuk grup manusia dan mesin diukur berdasarkan throughput dan packet-loss-rate dan hasilnya juga dibuktikan menggunakan frequency-flat Rayleigh fading. Sub-optimal degree distribusi yang diusulkan ℎ􁈺𝑥􁈻􀵌􁈼􁉀􀵫8,2􀵯,1􁉁􁈽 dan Λ 􀯠􁈺𝑥􁈻􀵌􁈼􁉀􀵫3,2􀵯,0.2􁈻,􁈺􀵫4,2􀵯,0.8􁈻􁉁􁈽 dengan hasil throughput sebelum fading Th 􀵌0.35 paket/slot dan Tm 􀵌0.32 paket/slot, sedangkan setelah fading Th 􀵌0.34 paket/slot dan Tm 􀵌0.22 paket/slot.Kata kunci : MDS codes, CRA, human, machines, EXIT chart ABSTRACTFuture wireless network involving machines and human communications.This research proposed new concept of network coding based on Maximum Distance Separable (MDS) codes. Designed optimally sub-optimal degree distribution for prioritizing human using projected EXIT chart. This research fundamental multiple access scheme for wireless super-dense network using Coded Random Access (CRA). In this research, proposed scheme under Binary Erasure Channel (BEC) to model a network. We evaluate the performance for human and machines group in terms of throughput and packet-loss-rate, and the result are then verified using frequency-flat Rayleigh fading. We have proposed sub-optimal degree distributions are Λ ℎ􁈺𝑥􁈻􀵌􁈼􁉀􀵫8,2􀵯,1􁉁􁈽 and Λ 􀯠􁈺𝑥􁈻􀵌􁉄􁉀􀵫3,2􀵯,0.2􁈻,􁈺􀵫4,2􀵯,0.8􁈻􁉁􁉅, the resulting throughput Th 􀵌0.35 packet/slot and Tm 􀵌0.32 packet/slot under fading and without fading Th 􀵌0.34 packet/slot and Tm 􀵌0.22 packet/slot.Keywords: MDS codes, CRA, human, machines, EXIT chart
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引用次数: 1
Perancangan dan Analisis Kinerja Sistem Kontrol dan Penjadwalan Lampu Berbasis IoT 设计和分析控制系统性能和调度灯是基于很多
Pub Date : 2019-09-30 DOI: 10.26760/elkomika.v7i3.533
Adnan Rafi Al Tahtawi, T. Hendrawati, Aim Abdurrahim, E. Andika
ABSTRAKPengontrolan lampu melalui jaringan internet adalah salah satu contoh aplikasi berbasis teknologi Internet of Things (IoT). Tujuan penelitian ini adalah untuk merancang sistem kontrol dan penjadwalan lampu berbasis IoT, serta melakukan analisis terhadap kinerja sistem tersebut. Sistem ini dibangun menggunakan mikrokontroler NodeMCU yang telah terintegrasi dengan modul WiFi. Pengendali relai dirancang dengan algoritma sederhana menggunakan objek tombol di aplikasi Android sebagai perangkat antarmuka. Selain memberikan perintah secara langsung, aplikasi Android juga dirancang agar dapat menjadwalkan ON/OFF lampu melalui akses akun pengguna. Hasil pengujian menunjukkan bahwa sistem dapat terhubung dengan jaringan internet melalui modul WiFi. Lampu berhasil dikontrol dan dijadwalkan sesuai dengan beberapa skenario pengujian. Hasil uji waktu respon pengiriman data menunjukkan bahwa waktu tunda rata-rata pengiriman perintah dari aplikasi Android ke sistem adalah kurang dari 5 detik.Kata kunci: NodeMCU, IoT, sistem kontrol, penjadwalan, Android ABSTRACTLighting control over the internet network is one example of Internet of Things (IoT) applications. The aim of this research is to design a light control and scheduling system based on IoT, and also to analyze its performances. This system is built using low-cost NodeMCU microcontroller that has integrated with the WiFi module. Relay controller is designed with simple algorithm using push button object in an Android application as an interface device. Besides giving command directly, the Android application is also designed to schedule ON/OFF the lights through user account access. The testing results indicate that the system able to connect with internet network via WiFi module. The lights are sucessfully controlled and scheduled according to several testing scenarios. Time respon testing result shows that the average delay data transmission from Android application to system hardware is less than 5 seconds.Keywords: NodeMCU, IoT, control system, scheduling, Android
互联网上的光衰变是许多基于互联网技术的应用程序之一。本研究的目的是设计基于大型照明的控制系统和调度系统,并对该系统的性能进行分析。该系统是由NodeMCU集成到WiFi模块的微控制器构建的。继电器是用Android应用程序中的按钮对象作为界面设备设计的。除了直接提供命令外,Android应用程序的设计还可以通过用户访问来计时/关闭灯。测试结果表明,系统可以通过WiFi模块与网络连接。根据一些测试场景,灯具被成功地控制和安排。数据传输响应时间测试结果显示,从Android应用程序向系统发送命令的平均延迟时间不到5秒。关键词:NodeMCU, saturn,控制系统,调度,Android ABSTRACTLighting控制这项研究的目标是设计一个光控制和调整系统,以及对其性能的分析。这个系统是用低成本的微控制器建立的,这些节点与WiFi模块是集成的。控制器的中继器采用了一种简单的算法,使用Android应用程序中的按下按钮的对象为界面设备设计。在直接命令命令下,Android应用程序还设计成将灯光通过用户访问帐户设置。测试结果表明,该系统可以通过WiFi模块与互联网网络连接。灯光被控制和分配给几个测试场景。反馈时间测试显示,从Android应用程序发送到硬件系统的平均数据传输不到5秒。基调:NodeMCU,样本,控制系统,scheduling, Android
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引用次数: 1
Deep Learning RetinaNet based Car Detection for Smart Transportation Network 基于深度学习视网膜网的智能交通网络车辆检测
Pub Date : 2019-09-30 DOI: 10.26760/elkomika.v7i3.570
Irma Amelia Dewi, Lisa Kristiana, A. Darlis, Reza Fadilah Dwiputra
ABSTRAKDeteksi objek yang merupakan salah satu bagian utama dari sistem Smart Transportasion Network (STN) diajukan pada penelitian ini. Penelitian ini menggunakan salah satu model STN yaitu Infrastructure-to-Vehicle (I2V), dimana sistem ini bekerja dengan mendeteksi kendaraan mobil menggunakan model arsitektur RetinaNet dengan backbone Resnet101 dan FPN (Feature Pyramid Network), kemudian hasil deteksi mentrigger VLC transmitter yang terpasang di lampu penerangan jalan mengirimkan sinyal informasi menuju VLC receiver yang dipasang di mobil. Pada tahap proses training, jumlah dataset mobil yang digunakan adalah sekitar 1600 image dan 400 validation image serta pengulangan proses sebanyak 100 epoch. Berdasarkan 50 kali pengujian pada image test, diperoleh nilai precision mencapai 86%, nilai recall mencapai 85% dan f1-score mencapai 84%.Kata kunci: Object detection, RetinaNet, Resnet101, STN, VLC, I2V ABSTRACTObject detection is one of the main part in Smart Transportation Network (STN) system proposed in this research. This research used one of the STN models, namely Infrastructure-to-Vehicle (I2V), a system works by detecting car using RetinaNet architecture model with ResNet 101 and FPN (Feature Pyramid Network) as backbone, then the detection result triggers VLC transmitter set up on the street lighting to transmit information signal to the VLC receiver which set up in the car. At the training process stage, the number of car datasets is approximately 1600 images, 400 validation images and repetition of processes about 100 epochs. Based on the 50 times testing process on a image test, it is obtained 86% of a precision value, by reaching 85% of recall value, and 84% of f1-score. Keywords: Object detection, RetinaNet, Resnet101, STN, VLC, I2V
智能运输网络(STN)系统的主要部分被提交到本研究中。这项研究使用Infrastructure-to-Vehicle (I2V模型之一walk),这个系统的运作方式通过探测车辆车在哪里使用建筑RetinaNet模型Resnet101骨干和FPN (Feature金字塔Network),然后mentrigger检测结果的VLC发射器安装在发送信号信息接受者的VLC道路照明的灯安装在车里。在培训过程中,采用的汽车数据库数量约为1600种形象和400种验证形象以及100种过程的重复。根据图像测试的50次测试,precision值达到了86%,recall值达到85%,f1分数达到84%。关键词:目标探测、视网膜探测、Resnet101、STN、VLC、I2V abstracbject检测是智能运输网络(STN)的主要部分之一。这个研究过去一号models of the walk, namely Infrastructure-to-Vehicle (I2V), a系统工作由detecting汽车用RetinaNet模型架构ResNet 101和FPN网络(Feature金字塔)美国脊梁,然后《detection论点triggers VLC发射器set up on the street照明信号传输资讯网向境VLC接收器哪种设置车。在培训阶段,汽车数据数据数据接近1600幅图像,400个验证和重复的过程约为100埃波克斯。根据50次形象测试结果,它包含了86%的价值,回收85%的价值,以及84%的f1分数。Keywords:目标探测,视网膜探测,Resnet101, STN, VLC, I2V
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引用次数: 3
Rancang Bangun Sistem Keamanan RFID Tag menggunakan Metode Caesar Cipher pada Sistem Pembayaran Elektronik 使用恺撒密码的方法设计RFID标签安全系统
Pub Date : 2019-09-30 DOI: 10.26760/elkomika.v7i3.427
Decy Nataliana, Febrian Hadiatna, Ahmad Fauzi
ABSTRAKPada penelitian ini mencoba untuk memanfaatkan tag RFID sebagai media untuk menyimpan data berupa nilai nominal uang. Metode enkripsi data Ceasar Cipher akan diterapkan ke dalam sistem yang dirancang sehingga data nominal uang pada tag merupakan data yang terenkripsi. Enkripsi data ini dilakukan untuk memperkuat sistem keamanan yang telah terdapat pada tag, sehingga proses peretasan data akan lebih sulit untuk dilakukan. Perangkat keras yang digunakan untuk merealisasikan sistem terdiri dari unit reader RFID-RC522, tag MIFARE Classic S50 1 kbyte, dan Arduino UNO R3. Dari hasil pengujian diperoleh bahwa tag dapat digunakan untuk menyimpan data berupa nilai nominal uang dan dari sistem yang telah direalisasikan nilai nominal uang tersebut dapat ditambah atau dikurang jumlahnya dari Rp 0 – Rp 4.294.967.295. Penerapan metode Ceasar Cipher berhasil mengubah nilai nominal uang menjadi data yang terenkripsi.Kata Kunci: RFID, pembayaran elektronik, sistem keamanan, enkripsi data, ceasar cipher ABSTRACTIn this research will try to utilize RFID tag as data storage for a certain value of money. Ceasar cipher as encryption method will be applied to the implemented system so that this certain value of money inside the tag turned into an encrypted data. Ecryption of the data is done to hardened the security sistem that already exists in the tag itself, so any violation behavior like data cracking will be harder to accomplish. The hardware that used on the system consist of a reader unit RFID-RC522, MIFARE Classic tag S50 1kbyte, and Arduino UNO R3. The result of this research proofed that the tag could be utilized to store a certain value of money and with a well built implemented system, the data value could be incremented or decremented ranging from Rp 0 – Rp 4.294.967.295. Implementation of Ceasar Cipher method has succesfully turn that certain value of money inside the tag into an encrypted data.Keywords: RFID, Electronic payment, security system, data encryption, ceasar cipher
本研究的抽象研究试图利用RFID标签作为一种媒体来存储货币的名义价值数据。Ceasar密码加密数据的方法将被应用到一个设计的系统中,这样标签上的钱名数据将成为加密数据。这种加密数据是为了加强标签上的安全系统而进行的,因此破解数据的过程将更加困难。用于实现系统的硬件包括一个单元的RFID-RC522,一个MIFARE经典标签s501 kbyte,和Arduino UNO R3。测试结果表明,标签可以用来存储货币面值的数据,并将货币面值的值从系统中应用出来,可以从Rp 0增加或小于Rp 0——Rp 0 - Rp - 4,967,295。Ceasar密码的应用成功地将货币的面值转换成加密数据。关键词:RFID,电子支付,安全系统,数据加密,这个研究的ceasar ABSTRACTIn将试图将RFID数据标记为确定的钱价值的数据存储。Ceasar密码作为encryption method的应用系统将被应用,这样标签中这个货币价值的真实值将被转换成加密数据。这些数据的加密被用来压制已经存在于自识别标签中的安全系统,因此任何对开盘数据的破坏都是困难的。使用在系统上的硬件是RFID-RC522, MIFARE经典标签s501k, Arduino UNO R3。这项研究的结果是,标签可以通过存储一个确定的货币价值和一个合理的实现系统来销售,价值可以从Rp - 0中增加或decremented数据。采用密码方法的方法成功地将标签中的钱的价值转化为加密数据。键盘:RFID,电子支付,安全系统,加密数据,凯撒密码
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引用次数: 5
Perancangan Kendali Multilevel Inverter Satu Fasa Tiga Tingkat dengan PI+feedforward pada Beban Nonlinier
Pub Date : 2019-09-30 DOI: 10.26760/elkomika.v7i3.493
Mochamad Ari Bagus Nugroho, Novie Ayub Windarko, Bambang Sumantri
ABSTRAKSebuah konverter daya multilevel inverter diharapkan mampu untuk menyuplai tegangan AC ideal pada kondisi beban linier maupun nonlinier. Diharapkan metode kendali mampu cepat tanggap dan mampu mempertahankan bentuk tegangan AC keluaran inverter. Pengendali PI+feedforward diajukan dalam makalah ini. Pengendali ini akan diuji dengan beban linier maupun nonlinier. Beban nonlinier berupa rangkaian penyearah dengan filter kapasitor. Berdasarkan pengujian simulasi didapatkan bahwa pengendali PI+feedforward lebih cepat tanggap terhadap gangguan yang dibuktikan dengan nilai kesalahan rata-rata absolut sekitar 73% lebih kecil dari pengendali PI. Hasil Simulasi menunjukkan bahwa multilevel inverter dengan kendali PI menghasilkan THDv sebesar 0,669% pada beban linier dan sebesar 1,263% pada kondisi beban nonlinier. Sedangkan dengan kendali PI+feedforward menghasilkan THDv sebesar 0,292% pada beban linier dan sebesar 1,044% pada kondisi beban nonlinier.Kata kunci: mutilevel inverter, pengendali PI, feedforward, beban non-linier ABSTRACTA multilevel inverter power converter is expected to be able to supply ideal AC voltage in linear and nonlinear load conditions. It is expected that the control method is be able to respond quickly and be able to maintain the waveform of the inverter output AC voltage. PI + feedforward controller is proposed in this paper. This controller will be tested with linear and nonlinear loads. Nonlinear load is a rectifier circuit with a filter capacitor. Based on simulation it was found that PI + feedforward controllers were more responsive to interference as evidenced by the mean absolute error (MAE) value of about 73% less than the PI controller. Simulation results show that multilevel inverter with PI control produces THDv of 0.669% in linear load and 1.263% in nonlinear load conditions. Whereas with PI + feedforward control produces THDv of 0.292% in linear loads and of 1.044% in nonlinear load conditions.Keywords: multilevel inverter, PI controller, feedforward, non-linear load
预计逆变器的多级功率转换器能够为线性和非线性负载条件提供理想的交流电压。我们希望这种控制方法能够迅速响应,并能够保持逆变交流输出的电压形式。PI+feedforward控制器提交于本文件。该控制器将在线性和非线性负载中进行测试。非线性负载是一个带有电容器过滤器的对齐电路。根据所获得的模拟测试,PI+feedforward弯弯机对被证明的异常速度更快,误差值至少比PI小73%。模拟结果表明,具有圆周率控制的多级逆变器在线性负载中产生的THDv为0.669%,非线性负载状态为163%。而通过控制PI+feedforward, THDv在线性负载中占0.292%,非线性负载状态为1044%。密码:主内内的主内控制器、PI控制器、feedforward、一种无线性的抽象负载,预计将能够提供理想的、非线性的功率转换器。预计控制方法将迅速响应,并能够保留逆变器输出AC电压的waveform。PI + feed控制器正在申请这篇论文。这个控制器将尝试线性和非线性的路径。非线性负载是一个具有过滤电容器的回路。基于模拟,专家发现圆周率+费代控制员比圆周率控制器少73%,对干扰的影响更大。线性负荷和非线性负载123.3%的线性负载代表。线性上限和非线性负荷1044%的利润。键盘:多级逆变器,PI控制器,feedforward,非线性负载
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引用次数: 3
Iluminasi Panel Surya pada Satelit Orbit Rendah Ekuatorial 在赤道低轨道卫星上的太阳能电池板
Pub Date : 2019-09-30 DOI: 10.26760/elkomika.v7i3.480
Desti Ika Suryanti, S. Ramayanti, M. Mukhayadi
ABSTRAKDesain satelit telah berkembang ke arah miniaturisasi untuk mengurangi biaya peluncuran. Satelit kecil menyediakan platform berbiaya rendah untuk misi luar angkasa. Salah satu permasalahan utama satelit kecil adalah terbatasnya ketersediaan daya. Karena ketersediaan daya diperlukan agar subsistem satelit dapat bekerja, maka pada proses desain satelit perlu dilakukan analisis dan estimasi ketersediaan daya selama satelit mengorbit dengan tetap mempertahankan kekompakan dan volume yang diberlakukan oleh standar. Penelitian ini bertujuan untuk mengetahui kondisi iluminasi matahari pada panel surya dari berbagai alternatif desain penempatan sehingga diperoleh sebuah desain yang efisien. Iluminasi maksimum sebuah panel surya triple junction yang terpasang secara body mounted pada satelit kurang lebih sebesar 60%. Berdasarkan hasil penelitian ini, kombinasi pemasangan 3 body mounted panel surya dan 2 simple deploy panel surya menghasilkan persentase iluminasi dua kali lipat dibandingkan 5 body mounted panel surya.Kata kunci: panel surya triple junction, iluminasi, body mounted, simple deploy, daya ABSTRACTSatellite design has envolved towards miniaturization to reduce launch costs. Small satellites provide a low-cost platform for space missions. One of the main problems with small satellites is the limited availability of power. Because the availability of power is needed so that the satellite subsystem can work, the satellite design process needs to analyze and estimated power availability as long as the satellite orbits while maintaining the compactness and volume imposed by the standard. This study aims to determine the conditions of solar illumination on solar panels from various alternative design placements in order to obtain an efficient design. Maximum illumination of triple junction solar panel mounted on a small satellite is approximately 60%. Based on the results of this study, the combination of installing 3 body mounted solar panels and 2 simple deploy solar panels produced twice the illumination percentage compared to 5 body mounted solar panels.Keywords: solar panel triple junction, illumination, body mounted, simple deploy, power
卫星的抽象设计已经发展到微型化,以减少发射成本。小型卫星为太空任务提供低成本平台。小型卫星的一个主要问题是电力供应有限。由于维持卫星子系统工作所需的电力供应,因此需要对卫星设计过程进行分析和估计,以便在卫星轨道上保持标准的协调和体积。这项研究的目的是确定不同位置设计替代方案太阳能电池板的照明条件,以便获得有效的设计。最大照明是一个三重接头太阳能电池板,其载重量为60%。根据这项研究的结果,安装3个太阳能电池板和2个简单的太阳能电池板的组合产生的照明率是5个太阳能电池板的两倍。关键字:三重接头太阳能电池板,照明,体顶,简单的部署,抽象设计的力量使减少发射的微型化。小型卫星提供低成本的太空任务平台。小卫星的一个主要问题是有限的能力。因为电力的可用性需要卫星子系统的工作,卫星设计程序需要分析和估计电力这项研究旨在确定来自不同种类的替代设计平台的太阳能照明条件。三联太阳能电池板上的三连接太阳能电池板高度接近,60%是相准的。根据这项研究的结果,安装3个太阳能电池板和2个简单的太阳能电池板制作在5个太阳能电池板上。三连接太阳能电池板,照明,车身增加,简单的部署,功率
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引用次数: 3
Analisis Perbandingan Kinerja Ekualisasi Zero Forcing dan MMSE pada FBMC-OQAM FBMC-OQAM上0叉化性能比较与MMSE的分析
Pub Date : 2019-09-30 DOI: 10.26760/elkomika.v7i3.600
Jans Hendry, Anggun Fitrian Isnawati
ABSTRAKKebutuhan layanan data pada teknologi 5G sangatlah tinggi. FBMC sebagai solusi dari kelemahan yang ada di OFDM menjadi teknologi yang digunakan pada komunikasi 5G. Pada OFDM, penggunaan ekualisasi sudah sangat banyak dilakukan penelitiannya dan menunjukkan hasil yang bervariasi tergantung dari jenis ekualisasi yang digunakan. Beberapa jenis ekualisasi yang digunakan pada modulasi OFDM antara lain Zero Forcing dan MMSE. Pada penelitian ini, beberapa variasi ekualisasi tersebut diterapkan pada FBMC dan dianalisis perbandingan kinerjanya. Penggunaan modulasi Offset-QAM yang dipadukan dengan FBMC mempunyai fungsi sebagaimana cyclic prefix pada OFDM (CP-OFDM) yakni untuk mengurangi inter symbol interference (ISI). Hasilnya menunjukkan bahwa nilai BER pada FBMC yang menggunakan ekualisasi MMSE pada SNR 5 dB mempunyai nilai sebesar 0,2941 sedangkan BER pada FBMC yang menggunakan ekualisasi ZF sebesar 0,2875. Nilai SER untuk ZF sebesar 0,5514 dan untuk MMSE sebesar 0,5391. Kapasitas kanal Hal ini menunjukkan bahwa kinerja FBMC dengan menggunakan ekualisasi MMSE lebih baik dibanding Zero Forcing.Kata kunci: FBMC, Offset-QAM, ekualisasi, Zero Forcing, MMSE ABSTRACTThe needs of data service on 5G technology is extremely necessary. FBMC as a solution over OFDM's drawbacks becomes the technology that is used in 5G communication. In OFDM technology, various equalisation methods have been used and final result highly depends on which method being used. Some of equalisation methods used in OFDM modulation are Zero Forcing (ZF) and MMSE. In this research, those equalisation methods were used on FBMC modulation and the performances were analyzed. The use of Offset-QAM modulation combined with FBMC actually functioning like Cyclic Prefix on OFDM which is to reduce Inter Symbol Interference (ISI). The result shows that BER value on FBMC that used MMSE equalisation when SNR 5 dB equals to 0.2941 whereas BER value on FBMC that used ZF equals to 0.2875. The value of SER on ZF is 0.5514 and MMSE is 0.5391. Channel Capacity calculation also shows that FBMC performance with MMSE is better than Zero Forcing.Keywords: FBMC, Offset-QAM, equalization, Zero Forcing, MMSE
5G技术的数据服务需要是非常高的。FBMC将OFDM的弱点转化为5G通信技术。在OFDM中,应用已经进行了大量的研究,并显示了根据所使用的方程的不同结果。用于OFDM调制的一些方程包括0叉距和MMSE。在本研究中,FBMC应用了一些方程的变体并分析了性能比较。使用调制Offset-QAM FBMC有功能正如cyclic这个前缀了混合而成的OFDM (CP-OFDM)即以减少国米interference(内容)的象征。结果表明,BER值使用耳鸣的FBMC MMSE的乔5分贝大小的有价值的FBMC 0.2941 BER则使用耳鸣安迪是0.2875一样大。ZF的标记为0.5514,MMSE为0.5391。运河容量性能这表明用耳鸣FBMC MMSE比零Forcing。关键词:FBMC Offset-QAM、耳鸣,零Forcing MMSE ABSTRACTThe需要数据服务在5G技术是非常必要的。美国FBMC OFDM a solution完毕的drawbacks变成了《5G通信技术就是过去。在OFDM技术,不同equalisation方法有论点决赛已经过去和强烈depends on哪种方法被过去。一些equalisation以前的方法在OFDM的调制是零Forcing(安迪是)MMSE,睡意朦胧。在这个研究,那些equalisation方法是以前在FBMC调制performances是analyzed》的记录。Offset-QAM之用调制组合和FBMC实际上functioning像Cyclic这个前缀了OFDM在哪种是需要减少国米象征Interference(内容)。那个论点节目在价值上FBMC那过去MMSE equalisation当乔5分贝equals到0。2941 whereas BER价值在FBMC那以前安迪是2875 equals到0。在安迪是爵士之价值是0 5391 5514和MMSE是0。频道Capacity calculation也会显示那个FBMC MMSE是比零Forcing一起演出。安装:FBMC Offset-QAM equalization,零Forcing, MMSE
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引用次数: 4
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ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika
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