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All Journal Jurnal Jurusan Pendidikan Teknik Elektro ELKHA : Jurnal Teknik Elektro Teknik dan Ilmu Komputer IMAGE ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Techne : Jurnal Ilmiah Elektroteknika Jurnal Telematika Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Jurnal Pengabdian Masyarakat Teknik Abdimasku : Jurnal Pengabdian Masyarakat Reswara: Jurnal Pengabdian Kepada Masyarakat Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering)
Lydia Sari
Atma Jaya Catholic University
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Social Sciences

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Analisis Interferensi White Space Device terhadap Sistem Radio Navigasi Penerbangan pada Frekuensi 960 MHz SARI, LYDIA; ALAM, SYAH; SURJATI, INDRA
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 7, No 2: Published May 2019
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v7i2.351

Abstract

ABSTRAKPemerintah Indonesia mengalokasikan spektrum frekuensi 960-1164 MHZ untuk sistem komunikasi bergerak maupun untuk radio navigasi penerbangan. Penggunaan White Space Device (WSD) merupakan solusi keterbatasan spektrum, karena mampu mengidentifikasi dan memanfaatkan frekuensi yang tidak terpakai. Penelitian ini menyelidiki potensi interferensi yang terjadi pada koeksistensi sistem radio navigasi penerbangan serta perangkat WSD di pita 960 MHz. Penelitian menggunakan pendekatan matematis Minimum Coupling Loss (MCL) serta simulasi dengan Spectrum Engineering Advanced Monte Carlo Analysis Tool (SEAMCAT). Hasil penelitian menunjukkan bahwa level interferensi yang masih diperbolehkan berada di kisaran -81,589 dBm. Level ini tercapai dengan penggunaan jarak proteksi antar sistem sejauh 36 km. Penurunan daya pemancar WSD atau peningkatan gain RSBN sebesar 1 dBm dapat memperkecil jarak proteksi menjadi 30 km untuk mencapai probabilitas interferensi berturutturut 3,55% dan 3,6%.Kata kunci: white space devices, interferensi, radio navigasi penerbangan ABSTRACTThe Indonesian Government allocates the 960-1164 MHz spectrum for mobile communications and aeronautical radio navigation services. Cognitive radio is a technology which will enable the use of a limited spectrum optimally. Devices implemented with cognitive radio capability is referred as White Space Device (WSD) as they can identify and utilize idle channels. This paper investigates the interference potential between aeronautical radio navigation services and WSD as they co-exist in the 960 MHz spectrum using Minimum Coupling Loss (MCL) formulae and simulations using Spectrum Engineering Advanced Monte Carlo Analysis Tool (SEAMCAT). Results show that the permissible interference level is -81,589 dBm which is achievable if the two systems are separated by 36 km. Decreasing the WSD power level or increasing the RSBN gain by 1 dBm can decrease the protection distance between the two systems to 30 km to achieve an interference probability of 3,55% and 3,6%, respectively.Keywords: white space devices, interference, aeronautical radio navigation
PELATIHAN PEMBUATAN ALAT DETEKSI DINI BENCANA BANJIR UNTUK DI WILAYAH JATIBENING, BEKASI Alam, Syah; Surjati, Indra; Sari, Lydia; Ningsih, Yuli Kurnia; Astuti, Pudji; Saragi, Simon Jansen; Ilham, Muhammad
Reswara: Jurnal Pengabdian Kepada Masyarakat Vol 5, No 1 (2024)
Publisher : Universitas Dharmawangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46576/rjpkm.v5i1.3405

Abstract

Banjir adalah bencana alam yang sering terjadi di wilayah Jakarta dan sekitarnya. Salah satu permasalahan yang menyebabkan bencana banjir adalah adanya sumbatan pada saluran air yang menyebabkan air meluap dan menimbulkan genangan. Kegiatan pengabdian kepada masyarakat ini memberikan solusi dengan memberilkan kegiatan pelatihan pembuatan deteksi dini bencana banjir menggunakan deteksi ketinggian air yang diletakkan pada saluran pembuangan air di wilayah Perumahan Jatibening, Bekasi yang mengalami bencana banji diawal tahun 2021. Alat yang dirancang menerapkan teknologi tepat guna dengan memanfaatkan pelampung water level control yang dikoneksikan dengan power supply dan relay sebagai sakelar otomatis. Informasi ketinggian air direpresentasikan menggunakan indicator lampu LED dan jika air sudah meluap maka sirine akan berbunyi untuk memberikan informasi kepada warga sekitar agar dapat segera mengevakuasi barang-barang berharga dan lainnya. Hasil dari kegiatan ini didapatkan bahwa pemahaman masyarakat terhadap deteksi bencana banjir meningkat menjadi 98% dan alat deteksi ketinggian air berhasil diterapkan dan ditempatkan di saluran pembuangan air di wilayah perumahan jatibening, bekasi.
Training for Designing Automatic Temperature Detector Based on Arduino Uno using Tinkercad to Improve Teacher Competence at MTS Tarbiyatul Falah Alam, Syah; Surjati, Indra; Sari, Lydia; Iznih; Alga Maulana, Gusti
ABDIMAS: Jurnal Pengabdian Masyarakat Vol. 8 No. 2 (2025): ABDIMAS UMTAS: Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM Universitas Muhammadiyah Tasikmalaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35568/abdimas.v8i2.6454

Abstract

MTS Tarbiyatul Falah is a junior high school educational institution that organizes a madrasah-level education program that follows the curriculum set by the Ministry of Education and Culture of the Republic of Indonesia where one of its extracurricular activities is the introduction of basic electronics to students. For that, the urgency of this community service activity is to provide training to teachers at MTS Tarbiyatul Falah to be able to design and realize a temperature control circuit based on Arduino Uno. The purpose of this community service activity is to provide training in the use of tinkercad for basic Arduino programming in order to improve teachers' knowledge in providing materials, especially in the field of electronics. From this activity, the ability and understanding of the training participants increased from 56 to 90 based on the pre-test and post-test. In addition, the satisfaction of the training participants was also very high as shown based on the results of the questionnaire where the average satisfaction was 95%. Therefore, this activity is very useful especially for improving the ability of MTS teachers in designing electronic circuits using Arduino Uno.
User Capacity Optimization Using The Mobility Load Balancing Algorithm For Downlink Data Long Term Evolution Miranti, Miranti; Sari, Lydia; Doris, Muhamad; Alam, Syah; Surjati, Indra
Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) Vol 12 No 1 (2025): Jurnal Ecotipe, April 2025
Publisher : Jurusan Teknik Elektro, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jurnalecotipe.v12i1.4532

Abstract

The increasing number of users in a Long Term Evolution (LTE) network often decreases network performance. A cell that has high traffic experiences a decline in network performance due to unavailable resources for certain users, while in cells with low traffic, the use of resources in these cells is inefficient. The mobility load balancing (MLB) algorithm balances the intercellular loads in an LTE network and improves the performance by distributing part of the load in a high traffic cell to neighboring cells that have low loads. An activated MLB will detect the network load and calculate the available resource for each cell to determine which cells are overloaded. The MLB will consider the candidate cell where the load could be distributed. MLB simulation results show that the application of MLB has succeeded in reducing the percentage of unsatisfied users by 9.4% and increasing throughput system to 5.617 Mbps.
Interference Analysis Between 5G System and Fixed Satellite Service in the 28 GHz Band Ghifari, Rafli; Sari, Lydia; Mardian W, R. Deiny; Alam, Syah; Surjati, Indra
ELKHA : Jurnal Teknik Elektro Vol. 15 No.2 October 2023
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/elkha.v15i2.51040

Abstract

One of the most favorable frequency bands for 5G technology is the 27.5 - 28.5 GHz band which has been used by Fixed Satellite System (FSS) service in the uplink direction. This potentially causes interference between the two systems. This study aims to analyze the interference that occurs between satellite earth stations and 5G access points (AP), and between 5G AP and satellite sky stations. The analysis is carried out based on simulations using the Spectrum Engineering Advanced Monte Carlo Analysis Tool (SEAMCAT) software, with two scenarios. The first scenario is to analyze interference between the 5G AP and the FSS sky station. With the C/I interference criterion of 40.2 dB, the simulation results show that the 5G AP will not interfere with the FSS sky station. The second scenario is the interference simulation between FSS earth station and 5G AP. The simulation is carried out by varying the distance between the earth station and the 5G AP, the height of the earth station, and the height of the 5G AP. Based on the simulations, it is shown that the FSS earth station can interfere with 5G AP with a probability of up to 60%, so it is necessary to adjust the distance between systems and the height of the antenna to minimize the interference. The shortest distance needed to minimize interference is 36 km with an earth station height of 5 meters.
Analysis of Energy Management System and Feasibility of 25 kWp Rooftop Solar Power Plant using Techno-Economic Method in DKI Jakarta Regional Government Building Septian, Angga; Irianto, Chairul G.; Sari, Lydia
Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) Vol 13 No 1 (2026): Jurnal Ecotipe, April 2026
Publisher : Jurusan Teknik Elektro, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jurnalecotipe.v13i1.4586

Abstract

The building sector is a major contributor to energy consumption and greenhouse gas emissions in Indonesia, accounting for approximately 50% of national energy use and nearly 30% of total emissions. This study evaluates the implementation of an ISO 50001–based Energy Management Systems (EnMS) in a government building in Jakarta, combining energy efficiency retrofits with rooftop photovoltaic (PV) integration. The research contributes a comprehensive technical and economic assessment that quantifies energy savings, emission reductions, and financial feasibility within a replicable public-sector framework. The methodology included an ISO 50001–aligned energy audit, building energy simulation using DesignBuilder, PV system design with PVsyst, and economic feasibility analysis. LED lighting retrofits reduced lighting energy consumption by 38.14%, while air-conditioning optimization improved thermal comfort. A 24.75 kWp rooftop PV system generated 33,428 kWh annually, supplying 17.97% of the building’s electricity demand. In total, the integrated measures achieved annual energy savings of 37,587 kWh and reduced emissions by 31.57 tons of CO₂. Economic analysis indicated that the project was financially feasible, with a positive NPV, a 6% IRR, an 8.18% ROI, and a payback period of approximately 14 years. The integrated approach proved effective and showed strong potential for replication in similar public buildings.
Co-Authors Alga Maulana, Gusti Anindito, Atria Chairul G. Irianto, Chairul G. Dian Widi Astuti, Budi Irawan Prima Putra, Dian Widi Astuti, Djajadikarta, Insan Kamil Doris, Muhamad Ghifari, Rafli Indra Surjati Iznih Iznih, Iznih Mardian W, R. Deiny Miranti Miranti Muhammad Ilham Nurramadhini, Annisa Orbia, Ricky Harbu PUDJI ASTUTI Puspasari, Puspasari Putranto, Agam R. Deiny Mardian Wijayapraja Saragi, Simon Jansen Septian MN, Angga Suryadi Suryadi Syah Alam Syah Alam TANUWIJAYA, JUSTIN Teguh Firmansyah Theresia Ghozali V. Windha Mahyastuty Vaswani, Rakesh Yuli Kurnia Ningsih Yuli Kurnia Ningsih, Yuli Zahriladha Zakaria