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SIMULASI PERANGKAT IMPLAN KOKLEA DENGAN CONTINUOUS INTERLEAVE SAMPLING Lydia Sari; Theresia Ghozali
Jurnal Elektro Vol 9 No 1 (2016): Jurnal Elektro Unika Atma Jaya
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

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Perangkat bantu dengar implan koklea telah diketahui dapat membantu penyandang tuna rungu mempersepsikan suara secara signifikan. Perangkat ini terdiri atas bagian eksternal dan internal, masing-masing berfungsi untuk menangkap sinyal suara serta mengolah sinyal suara menjadi sinyal listrik yang akan digunakan untuk menstimulasi saraf-saraf pendengaran. Salah satu skema pengolahan sinyal yang umum dipakai pada perangkat implan koklea adalah Continuous Interleave Sampling (CIS), yang memisahkan frekuensi sinyal suara asli menjadi beberapa frekuensi untuk menstimulasi koklea manusia pada titik-titik berbeda. Pada makalah ini, cara kerja implan koklea dengan skema CIS disimulasikan menggunakan peranti lunak LabView. Hasil simulasi menunjukkan bahwa sinyal yang disintesis dari sinyal asli yang telah diproses dengan delapan filter sesuai skema CIS dapat dipersepsikan oleh subjek tes berpendengaran normal. Peningkatan jumlah filter hingga 12 buah tidak menambah inteligibilitas sinyal hasil sintesis, sebaliknya penggunaan kurang dari 5 (lima) filter akan mengakibatkan sinyal hasil sintesis sulit dipahami. Kata kunci: implan koklea, continuous interleave sampling, simulasi ujaran

SIMULASI JARINGAN MULTI PROTOCOL LABEL SWITCHING DAN TRAFFIC ENGINEERING MENGGUNAKAN ROUTER MIKROTIK David V; Theresia Ghozali
Jurnal Elektro Vol 9 No 1 (2016): Jurnal Elektro Unika Atma Jaya
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

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Jaringan internet menggunakan protokol TCP/IP. Untuk mempercepat pengiriman paket pada jaringan TCP/IP ditambahkan protokol Multi Protocol Label Switching (MPLS). MPLS menggunakan label sebagai identifikasi untuk menentukan jalur yang akan dilalui oleh paket. MPLS bekerja pada layer 2,5. Selain itu, pada jaringan MPLS juga terdapat fitur Traffic Engineering dan metode Fast reroute. Traffic engineering digunakan untuk merekayasa trafik pada suatu jaringan, sehingga semua jalur pada jaringan tersebut dapat dioptimalkan. Sedangkan fast reroute adalah suatu metode yang dapat mempercepat proses perpindahan jalur, ketika jalur utama yang dilewatkan terputus.

Wireless Sensor Network Untuk Pemantau Suhu Ruangan Kelas Theresia Ghozali; Sri Mulyanti
Jurnal Elektro Vol 10 No 2 (2017): Oktober 2017
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

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ABSTRAK Teknologi wireless dapat digunakan untuk mengetahui temperatur ruangan kelas.. Petugas dapat memantau menggunakan Hand Phone (HP) Android atau laptop yang tersambung dengan jaringan internet. Sebagai pemancar dan penerima digunakan Xbee S2C, sedangkan antarmuka antara internet dengan dan Xbee S2C digunakan ESP 8266 dan mikrokontroler Arduino Uno. Alat yang terdiri dari 3 bagian yaitu end divais yg berada diruangan kelas, router yang posisinya berada antara end divais dan server dan server yg berada di ruang pengendali.. End divais berfungsi untuk mengirimkan data suhu secara realtime. Router berfungsi sebagai penghubung antara perangkat end divais dan perangkat server. Server berfungsi sebagai penampung data yang dikirim dari perangkat router. Setelah data diterima data tersebut dikirim ke server yang berada di internet menggunakan ESP 8266. Untuk mendapatkan fleksibilitas sistem, digunakan cluster tree dengan router sebagai router dan pengalamatan Personal Area Network (PAN) ID perangkat 1234. Pengalamatan perangkat end divais Destination High (DH) dan Destination Low (DL) adalah 13A200 dan 414EED5D. Hasil pengujian menunjukkan jika internet lambat maka pengiriman data ke server pun menjadi lambat, sehingga datasuhu yg ditampilkan di telepon genggam berubah lambat tetapi selalu akurat. Unatuk jarak ruangan kelas sejauh 20m ke ruangan server, data masih dapat diterima dengan baik ABSTRACT Wireless sensor network can be used to monitor temperature of the classroom. Officers can monitor using an Android mobile phone or laptop connected to the internet network. . Sistem consisting of 3 parts that is end divais\, router and server. End device serves to transmit temperature data in realtime. Router serves as a link between device end device and server device. In order for the distance of wireless communication can be further. Server serves to forward data sent from the router device. After the data is received the data is sent to the server that is on the internet using ESP 8266. To get the flexibility of the system, use the cluster tree with the router as the coordinator and addressing Personal Area Network (PAN) device ID is 1234. Destination High (DH) and Destination Low (DL) for end divais ar 13A200 and 414EED5D. The test results show if the internet is slow then sending data to the server becomes slow, so the temperature displayed on the mobile phone changed slowly but always accurate. For a 20m distance to the server room, the data is still well received.

PROTOKOL VIRTUAL ROUTER REDUNDANCY SEBAGAI BACKUP ROUTE GATEWAY MENGGUNAKAN ROUTER MIKROTIK Yosua Michael; Theresia Ghozali
Jurnal Elektro Vol 11 No 2 (2018): Oktober 2018
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

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Untuk menjamin kelancaran pengiriman data dari LAN menuju router gateway, diperlukan router backup. Protokol yang digunakan pada router backup adalah Virtual Router Redundancy Protocol (VRRP). VRRP merupakan sebuah interface dari router OS Mikrotik yang memungkinkan untuk membuat beberapa router sebagai gateway dari jaringan lokal yang berada satu segment. Hasil pengujian menunjukkan kehilangan data saat VRRP bekerja hanya 3,8%, jauh lebih kecil dibandingkan dengan kehilangan data pada saat routing protokol Open Shortest Path First (OSPF) bekerja untuk mengalihkan trafik ke jaringan lain bila ada router yg tidak bekerja. Pengujian dengan Jperf menunjukan throughput dengan VRRP dan tanpa VRRP sebesar 219079 Kbits/s. Menggunakan VRRP tidak berpengaruh pada throughput bandwidth. To ensure smooth transmission of data from the LAN to the gateway router, a backup router is required. The protocol used in the backup router is the Virtual Router Redundancy Protocol (VRRP). VRRP is an interface of the Mikrotik os router that allows us to create multiple routers as gateway from one segment local network. The test result show that the VRRP data loss is only 3,8%, much smaller than the loss in the Open Shortest Path First (OSPF) routing protocol. Testing with Jperf shows throughput with VRRP and without VRRP of 219079 Kbits/s. Using VRRP has no effect on bandwidth throughput.

FILTER BANK MULTICARRIER (FBMC) UNTUK 5G Gradiyanto Jason; Theresia Ghozali; Kumala Indriati
Jurnal Elektro Vol 13 No 2 (2020): Jurnal Elektro: Oktober 2020
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v13i2.1977

Currently, technology in the telecommunications sector is developing rapidly.Telecommunication users need fast communication technology with wider bandwidth. Therefore, FBMC / OQAM was developed, which is a modulation candidate technology to be used in 5G. FBMC / OQAM is a development of OFDM which is modified by using filters to reduce noise. OFDM uses a multiplexing technique that divides bandwidth into several sub-carrier frequencies. But OFDM has a weakness, because it requires a Cyclic Prefix (CP) to overcome Intersymbol nterference (ISI) and Intercarrier Interference (ICI). With FMBC, the increased bandwidth due to the Cyclic prefix can be reduced. The filter used is based on the Physical layer for dynamic spectrum access and cognitive radio (PHYDYAS).The results achievedin this study were that FMBC was succesfully and the data sent was the same as the data received

FILTER BANK MULTICARRIER (FBMC) UNTUK 5G Jason, Gradiyanto; Ghozali, Theresia; Indriati, Kumala
Jurnal Elektro Vol 13 No 2 (2020): Jurnal Elektro: Oktober 2020
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v13i2.1977

Currently, technology in the telecommunications sector is developing rapidly.Telecommunication users need fast communication technology with wider bandwidth. Therefore, FBMC / OQAM was developed, which is a modulation candidate technology to be used in 5G. FBMC / OQAM is a development of OFDM which is modified by using filters to reduce noise. OFDM uses a multiplexing technique that divides bandwidth into several sub-carrier frequencies. But OFDM has a weakness, because it requires a Cyclic Prefix (CP) to overcome Intersymbol nterference (ISI) and Intercarrier Interference (ICI). With FMBC, the increased bandwidth due to the Cyclic prefix can be reduced. The filter used is based on the Physical layer for dynamic spectrum access and cognitive radio (PHYDYAS).The results achievedin this study were that FMBC was succesfully and the data sent was the same as the data received

Optimizing Secure Communication in Distributed Corporate Networks through PPTP and IPSec VPN Protocols Angelina Azels, Wilona; Ghozali, Theresia; Siregar, Marsul
Jurnal Elektro Vol 15 No 2 (2022): Vol.15 No.2 Oktober 2022: Jurnal Elektro
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v15i2.5111

In today’s industry, company’s activities are scattered in several locations and need internet for communication purposes. However, it will be dangerous if third-parties have access to their information. One of the solutions for securing information exchange is by using Virtual Private Network (VPN). The VPN protocols that will be used are Point-to-Point Tunneling Protocol (PPTP) with the help of Internet Protocol Security (IPSec). These protocols are simulated in VirtualBox that has been previously installed with two Mikrotik routers and two Windows 7 operating systems. The PPTP and IPSec protocols are configured in both routers through Winbox software. For the computers, the IP addresses are configured along with iPerf software for bandwidth analysis. In this VPN simulation, both computers can communicate with each other and have no problem in accessing the internet. In PPTP’s network, the average bandwidth is 1.293 Mbits/sec. Meanwhile, in PPTP with IPSec’s network, the average bandwidth is 0.853 Mbits/sec. There is a slight difference considering that in PPTP, the data packets are only encapsulated. On the other hand, the data packets in IPSec protocol are both encapsulated and encrypted.

Perancangan Jaringan Internet Menggunakan GNS3, Qemu, dan Virtual Box Amantha Olan Sahat Manik, Lukas; Ghozali, Theresia; Windha Mahyastuty, Veronica
Jurnal Elektro Vol 15 No 1 (2022): Vol.15 No.1 April 2022: Jurnal Elektro
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v15i1.5119

In the modern era, information technology continues to develop in line with human needs who want efficiency, ease, speed and accuracy in obtaining information and sending information. Moreover, in an office building, facilities for accessing information require a fast and efficient internet network as facilities and infrastructure to support office activities. In general, Mikrotik routers are widely used in office buildings as a means of distributing the internet. With the use of a mikrotik router that requires a lot of design and simulation first to get good internet performance GNS3 can design a topology that will be used in 2 ways, namely using Qemu and Virtual Box. Both of these methods have their respective advantages over the design process and test results

Perancangan Jaringan Fiber To The Home Berbasis Gigabit Passive Optical Network Di Citra Garden Puri Cluste Denza Timothy Sutjipto, Marcellus; Octaviani, Sandra; Ghozali, Theresia; Windha Mahyastuty, Veronica; Kristina Yanti Hutapea, Duma
Jurnal Elektro Vol 16 No 1 (2023): Vol.16 No.1 April 2023: Jurnal Elektro
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v16i1.5129

This research aims to design a GPON-based Fiber to The Home (FTTH) line in the Citra Garden Puri cluster Denza . The method used is to carry out field observations, by conducting surveys to determine the need for equipment that will be used in designing the route. After the survey is conducted, this project requires Google Earth Pro software to do the mapping of the spot that is used for the ODP and to create passages for the fiber. To make sure that all planning already meets the requirement, there are several calculationdone in this research such as; link loss budget, power link budget, power margin and risetime budget. The distance that were used in the calculation are calculated from the STO Cengkareng until the ONT on each customer. Based on the calculation, the result of the biggest loss for link loss budget are obtained from the upstream, in the amount of 22,0456 dB and the loss from downstream are equals to 21,5721 dB. The result that obtained for the upstream loss of power link budget are equals to -17,0456 dBm and -16,5172 dBm for downstream. The next calculation is power margin, from this project we obtained the lowest power margin for the upstream 6,9544 dB and 7,4288 dB for downstream. The last calculation obtained for this project is rise time budget, from the calculation the shortest data for the rise time budget upstream is 0,1001 ns and for the downstream is 0,1019 ns. Based on all the calculation, this project can be concluded as a success because all the calculation are between the boundary that is tolerated by PT Telkom.

Sistem Pemilahan Barang Berdasarkan Deteksi Label Menggunakan Vision Sensorr Henry, Carolus; Mulyadi, Melisa; Ghozali, Theresia; Wijayanti, Linda; Indriati, Kumala
Jurnal Elektro Vol 17 No 1 (2024): Jurnal Elektro: April 2024
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v17i1.5407

Sorting goods based on the results of checking packaging labels is an important process in controlling production quality in industry. Many industries still carry out manual sorting and label checking processes, which results in low productivity levels and is susceptible to human error. This research develops an automation system for sorting goods based on label inspection using vision sensors, programmable logic controller (PLC), and robot arm. The system controlled by a PLC will read and detect damage to packaging labels by using VeriSens vision sensor and sort them using a robot arm according to predetermined stock keeping unit (SKU) categories, namely SKU 1, SKU 2, SKU 3, SKU 4, and rejected goods. The pneumatic system is used as an actuator to push goods onto the conveyor, moving the robot arm with three degrees of freedom and vacuum. Detection is carried out by applying the edge detection concept to read text, images and code that are reprocessed with the VeriSens Application Suite software. The success rate of the goods sorting system reached 90% with a reading speed of 0.389 seconds and a work process duration ranging from 21.54 seconds to 28.99 seconds.

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