Articles
<![CDATA[SIMULASI PERANGKAT IMPLAN KOKLEA DENGAN CONTINUOUS INTERLEAVE SAMPLING ]]>
<![CDATA[Lydia Sari]]>;
<![CDATA[Theresia Ghozali]]>
<![CDATA[ Jurnal Elektro Vol 9 No 1 (2016): Jurnal Elektro Unika Atma Jaya ]]>
Publisher : <![CDATA[Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta ]]>
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<![CDATA[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]]>
<![CDATA[SIMULASI JARINGAN MULTI PROTOCOL LABEL SWITCHING DAN TRAFFIC ENGINEERING MENGGUNAKAN ROUTER MIKROTIK ]]>
<![CDATA[David V]]>;
<![CDATA[Theresia Ghozali]]>
<![CDATA[ Jurnal Elektro Vol 9 No 1 (2016): Jurnal Elektro Unika Atma Jaya ]]>
Publisher : <![CDATA[Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta ]]>
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<![CDATA[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.]]>
<![CDATA[Wireless Sensor Network Untuk Pemantau Suhu Ruangan Kelas ]]>
<![CDATA[Theresia Ghozali]]>;
<![CDATA[Sri Mulyanti]]>
<![CDATA[ Jurnal Elektro Vol 10 No 2 (2017): Oktober 2017 ]]>
Publisher : <![CDATA[Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta ]]>
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<![CDATA[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.]]>
<![CDATA[PROTOKOL VIRTUAL ROUTER REDUNDANCY SEBAGAI BACKUP ROUTE GATEWAY MENGGUNAKAN ROUTER MIKROTIK ]]>
<![CDATA[Yosua Michael]]>;
<![CDATA[Theresia Ghozali]]>
<![CDATA[ Jurnal Elektro Vol 11 No 2 (2018): Oktober 2018 ]]>
Publisher : <![CDATA[Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta ]]>
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<![CDATA[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.]]>
<![CDATA[FILTER BANK MULTICARRIER (FBMC) UNTUK 5G ]]>
<![CDATA[Gradiyanto Jason]]>;
<![CDATA[Theresia Ghozali]]>;
<![CDATA[Kumala Indriati]]>
<![CDATA[ Jurnal Elektro Vol 13 No 2 (2020): Jurnal Elektro: Oktober 2020 ]]>
Publisher : <![CDATA[Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta ]]>
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DOI: 10.25170/jurnalelektro.v13i2.1977
<![CDATA[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]]>
<![CDATA[Simulasi Multi Protocol Label Switching Virtual Private Network (MPLS VPN) Dengan Virtual Local Area Network (VLAN) Menggunakan Router MIKROTIK ]]>
<![CDATA[Bertha Euginia]]>;
<![CDATA[Theresia Ghozali]]>
<![CDATA[ TESLA: Jurnal Teknik Elektro Vol 20, No 2 (2018): TESLA: Jurnal Teknik Elektro ]]>
Publisher : <![CDATA[Universitas Tarumanagara ]]>
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DOI: 10.24912/tesla.v20i2.2987
<![CDATA[MPLS VPN with VLAN network is used to get fast, secure, and easily accessible communication .MPLS network will send packet data with label in header to the destination and VPN will limit the user who can access the network by VRF configuration.Routing protocol OSPF will divide to two areas, customer area and provider area. VLAN will be configured in switch and router CE1 so they can exchange data to workgroup and it will be safe because itis not broadcasted. MPLS VPN with VLAN simulation using Mikrotik router board and switch by measuring bandwidth. The result show that MPLS VPN with VLAN using less bandwidth than MPLS VPNUntuk mendapatkan komunikasi yang cepat, aman, dan mudah diakses digunakan jaringan MPLS VPN menggunakan VLAN. Jaringan MPLS akan mengirimkan paket sesuai dengan label yang ada pada header paket ke tujuan yang diinginkan dan VPN akan membatasi siapa pengguna yang berhak mengakses jaringan menggunakan konfigurasi VRF. Routing protokol OSPF dibagi dua daerah yaitu daerah customer dan provider. VLAN akan dikonfigurasi melalui switch dan router CE1 agar dapat saling bertukar data ke workgroup dan lebih aman karena tidak dikirimkan secara broadcast. Hasil pengujian menunjukkan bahwa MPLS VPN dengan VLAN menghasilkan bandwidth lebih kecil dibandingkan MPLS VPN tanpa VLAN]]>
<![CDATA[FILTER BANK MULTICARRIER (FBMC) UNTUK 5G ]]>
<![CDATA[Jason, Gradiyanto]]>;
<![CDATA[Ghozali, Theresia]]>;
<![CDATA[Indriati, Kumala]]>
<![CDATA[ Jurnal Elektro Vol 13 No 2 (2020): Jurnal Elektro: Oktober 2020 ]]>
Publisher : <![CDATA[Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta ]]>
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DOI: 10.25170/jurnalelektro.v13i2.1977
<![CDATA[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]]>
<![CDATA[Optimizing Secure Communication in Distributed Corporate Networks through PPTP and IPSec VPN Protocols ]]>
<![CDATA[Angelina Azels, Wilona]]>;
<![CDATA[Ghozali, Theresia]]>;
<![CDATA[Siregar, Marsul]]>
<![CDATA[ Jurnal Elektro Vol 15 No 2 (2022): Vol.15 No.2 Oktober 2022: Jurnal Elektro ]]>
Publisher : <![CDATA[Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta ]]>
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DOI: 10.25170/jurnalelektro.v15i2.5111
<![CDATA[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.]]>
<![CDATA[Perancangan Jaringan Internet Menggunakan GNS3, Qemu, dan Virtual Box ]]>
<![CDATA[Amantha Olan Sahat Manik, Lukas]]>;
<![CDATA[Ghozali, Theresia]]>;
<![CDATA[Windha Mahyastuty, Veronica]]>
<![CDATA[ Jurnal Elektro Vol 15 No 1 (2022): Vol.15 No.1 April 2022: Jurnal Elektro ]]>
Publisher : <![CDATA[Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta ]]>
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DOI: 10.25170/jurnalelektro.v15i1.5119
<![CDATA[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]]>
