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All Journal Jurnal Jurusan Pendidikan Teknik Elektro Explore: Jurnal Sistem Informasi dan Telematika (Telekomunikasi, Multimedia dan Informatika) Jurnal Teknik Elektro ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika
R. Deiny Mardian Wijayapraja
Universitas Trisakti
Education Electrical & Electronics Engineering Engineering Other

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ANALISIS KAPASITAS TRAFIK WAP PADA DAERAH URBAN DALAM SISTEM WLL DENGAN TEKNOLOGI DCS 1800 Wijayapraja, R. Deiny Mardian
Jurnal Teknik Elektro Vol 6, No 1 (2006)
Publisher : Jurnal Teknik Elektro

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

One of the cellular communication form is the data communication beside voicecommunication. Wireless Application Protocol (WAP) is a data communication which hascomplete features. This data/WAP communication might be a service in Wireless Local Loop(WLL) for the busy urban area. For example at Sudirman business area in Jakarta. If thecellular communication users in this area use this service actively it will increase the datacommunication traffic.To analyze the data/WAP communication traffic in urban WLL with DCS 1800technology we may use several analyses from the DCS 1800 itself and some simulation ofurban WLL area. They’ll give the illustration of the data/WAP communication trafficcapacity and the prediction about availability channel in an urban WLL using DCS 1800technology.There is a case study - the future prediction - which 202 data/WAP channels indemand. DCS 1800 technology could gives 55% of its 350 data/WAP channels while somerecent BTS have to increase 3 to 67 times of their 3 to 82 available data/WAP channels tohandle the case study’s demand. Recently, the data/WAP communication traffic is about 2%of the total communication traffic. It means that DCS 1800 provides just 21 data/WAPchannels of its 350 total data/WAP channels today.Keywords: cellular, communication, WAP, WLL, urban
Rancang Bangun Kunci Loker Otomatis Berbasis Raspberry PI dan RFID Untuk Miningkatkan Efisiensi Waktu Mardian, Raden Deiny; Orbia, Ricky Harbu; Sari, Lydia
Jurnal Pendidikan Teknik Elektro Undiksha Vol 9, No 3 (2020): Jurnal Pendidikan Teknik Elektro
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jjpte.v9i3.28041

Abstract

Pada saat ini pertumbuhan teknologi sangat berkembang pesat dalam berbagai bidang, salah satunya adalah smart locker. Sistem penitipan barang konvensional pada umumnya dilakukan membutuhkan proses yang memakan waktu seperti mencari loker yang kosong, memasukkan kunci, dan membuka kunci loker. Penggunaan Radio Frequency Identification (RFID) merupakan salah satu solusi di mana RFID bekerja dengan mendekatkan antara tag dan reader sehingga sistem dapat bekerja secara otomatis. Pada penelitian ini dikembangkan suatu sistem kunci loker otomatis yang dibuat dengan output berupa solenoid lock door yang berfungsi untuk membuka dan menutup loker otomatis dengan mikrokontroler Raspberry Pi dan pengiriman data berbasis RFID. Melalui pengujian dengan beberapa kondisi diperoleh catatan waktu di bawah 1 detik yang berarti sistem ini memberikan efisiensi dari segi waktu untuk membuka dan menutup kunci loker secara otomatis.Kata kunci: Loker, RFID, Raspberry Pi, Waktu 
Antena Mikrostrip MIMO dengan Teknik Planar Series Array 4x2 elemen untuk Sistem Komunikasi 5G ALAM, SYAH; SURJATI, INDRA; NINGSIH, YULI KURNIA; SARI, LYDIA; SURYADI, SURYADI; MARDIAN, RADEN DEINY; FIRMANSYAH, TEGUH; ZAKARIA, ZAHRILADHA; ASTUTI, DIAN WIDI
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 12, No 2: Published April 2024
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v12i2.441

Abstract

ABSTRAKMakalah ini mengusulkan antena mikrostrip dengan dengan performansi tinggi yang beroperasi pada frekuensi resonansi 3,5 GHz untuk sistem komunikasi 5G. Antena dikembangkan dalam dengan teknik array planar seri 4x2 elemen yang dikonfigurasi MIMO. Berdasarkan hasil pengukuran, antena yang dirancang memiliki koefisien refleksi <= -10 dB, koefisien isolasi <= -40 dB dengan rentang frekuensi 3.1 GHz – 3,7 GHz dan gain maksimum sebesar 12,52 dB pada frekuensi resonansi 3,5 GHz. Bandwidth dan penguatan antena masing-masing meningkat sebesar 172.72% dan 160.83 %. Penelitian ini dapat direkomendasikan untuk digunakan sebagai antena penerima sistem komunikasi 5G.Kata kunci: antena, array, mikrostrip, MIMO, planar, 5G ABSTRACTThis article suggests a microstrip antenna with high performance, designed to operate at the resonant frequency of 3.5 GHz in 5G communication systems. The antenna is developed in a MIMO-configured 4x2 element series planar array technique. Based on measurement results, the proposed antenna exhibits a reflection coefficient of <= -10 dB, an isolation coefficient of <= -40 dB, within the frequency range 3.1 – 3.7 GHz and maximum gain of 12.52 dB at the resonant frequency of 3.5 GHz. The antenna's bandwidth and gain enhanced until 172.72% and 160.83%, respectively. This study suggests the potential use of the developed antenna as a reception device in 5G communication systems.Keywords: antenna, array, microstrip, MIMO, planar, 5G
Sistem Persinyalan Kereta Api Cerdas Dengan Sensor Huskylens Dan Kendali Otomatis Berbasis Internet of Things I Gede Widhiantara Nugraha; R. Deiny Mardian Wijayapraja; Richard Antonius Rambung
Explore: Jurnal Sistem Informasi dan Telematika (Telekomunikasi, Multimedia dan Informatika) Vol 16, No 2 (2025): Desember
Publisher : Universitas Bandar Lampung (UBL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36448/jsit.v16i2.4451

Abstract

One of the safety factors in the world of railways is a reliable and excellent signaling system. Railway signaling consists of two components, namely electronic and mechanical parts, in the electronic part there are light signals with red, yellow and green indicators like traffic lights on the highway, for the mechanical part there is a wesel motor component that functions as a regulator of the direction of turn or rate of the train to be addressed, and for the signaling system used is the interlock system. Interlock is a relay-based device that functions to secure train travel and minimize train accidents. In 2009 there was an accident between Senja Utama Semarang train and Argo Bromo Anggrek train due to power outage and driver's negligence in reading signal lights. This research aims to design IoT-based automatic signaling on trains and automate train control to reduce the number of accidents. The train that will be used is a miniature train with HO scale 1:87 with a layout of 2 station lines and 1 non-station line, a servo motor is used as a turn signal, an IR sensor (FC-51) as a train detector and as a previous signal light colour changer, and a HUSKYLENS camera sensor as a signal light colour detector on an automatic train. In the interlock system using the Finite State Machine (FSM) method applied on the Arduino Mega, this system is monitored via a website. The train control system is applied on ESP32 and controlled through Blynk. The design of the signaling system and automatic train control has been able to achieve a 100% success rate with the implementation of an interlocking system with an average delivery time from ESP32 to the server is 2.779 seconds. Light signals, switches, and position sensors can be monitored directly through the website. Both automatic and manual train control can be controlled directly through the Blynk application.
Co-Authors Dian Widi Astuti I Gede Widhiantara Nugraha Indra Surjati Lydia Sari Orbia, Ricky Harbu Richard Antonius Rambung Suryadi Suryadi Syah Alam Teguh Firmansyah Yuli Kurnia Ningsih Zahriladha Zakaria