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All Journal Jurnal Teknologi Jurnal Teknologi Informasi dan Ilmu Komputer Prosiding Semnastek Emerging Science Journal JTERA (Jurnal Teknologi Rekayasa) Jurnal Elektronika dan Telekomunikasi Digital Zone: Jurnal Teknologi Informasi dan Komunikasi TELEKONTRAN: Jurnal Ilmiah Telekomunikasi, Kendali dan Elektronika Terapan Jurnal Teknik TELKA - Telekomunikasi, Elektronika, Komputasi dan Kontrol REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat JITEL (Jurnal Ilmiah Telekomunikasi, Elektronika, dan Listrik Tenaga) EPSILON: Journal of Electrical Engineering and Information Technology Buletin Pos dan Telekomunikasi
Yuliana, Hajiar
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

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Sistem Komunikasi Audio dengan Teknologi Visible Light Communication (VLC) Menggunakan Laser Led Charisma, Atik; Nur Akbar Setiawan, Rizky; Taryana, Een; Yuliana, Hajiar; Rike Indriani, Alifa
Digital Zone: Jurnal Teknologi Informasi dan Komunikasi Vol. 12 No. 2 (2021): Digital Zone: Jurnal Teknologi Informasi dan Komunikasi
Publisher : Publisher: Fakultas Ilmu Komputer, Institution: Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/digitalzone.v12i2.7519

Abstract

Kegiatan masyarakat di era sekarang yang serba digital menggunakan teknologi tanpa kabel (wireless). Teknologi tanpa kabel menjadi andalan komunikasi, namun seiring perkembangann zaman, ada sebuah teknologi tanpa kabel dengan memanfaatkan cahaya tampak. Teknologi ini dikenal dengan istilah visible light communication (VLC). Sistem VLC terdiri dari bagian transmitter dan receiver. Transmitter berupa komponen-komponen elektronika yang terintegrasi dengan cahaya tampak sebagai media transmisi. Pada penelitian ini membuat bagian transmitter dan receiver untuk komunikasi audio. Cahaya tampak sebagai media transmisi menggunakan laser led karena cahaya dari laser led ini lebih fokus dan pancaran cahayanya lebih jauh dibandingkan dengan yang lain. Sedangkan di sisi receiver menggunakan solar panel sebagai penerima sinyal informasi yang dikirimkan. Penelitian ini berhasil membuat sebuah sistem komunikasi audio berbasis visible light communication. Variasi jarak antara transmitter dan receiver mempengaruhi kualitas suara yang diterima. Pada jarak 500 cm kualitas suara yaitu 99,2 dB pada kondisi gelap dan 99,1 dB kondisi terang. Perubahan sudut pancar transmitter terhadap receiver juga mempengaruhi hasil kualitas suara. Kualitas suara terbaik pada sudut 900 di kondisi terang dengan jarak 50 cm sebesar 97,9 dB sedangkan di kondisi gelap dengan jarak 50 cm pada sudut 1000 sebesar 98,1 dB. Abstract The people activities in today's digital era use wireless technology. Wireless technology has become the mainstay of communication, but along with the times, there is a wireless technology that uses visible light. This technology is known as visible light communication (VLC). The VLC system consist of transmitter and receiver. Transmitters are electronic components that are integrated with visible light as a transmission medium. In this study, the transmitter and receiver are made for audio communication. Visible light as a transmission medium uses an LED laser because the light from this LED laser is more focused and the light beam is farther away than the others. While on the receiver side using a solar panel as a receiver of the information signal that is sent. This research succeeded in making an audio communication system based on visible light communication. Variations in the distance between the transmitter and receiver affect the quality of the received sound. At a distance of 500 cm in dark conditions, the sound quality is 99.2 dB in light conditions and 99.1 dB. Changes in the beam angle of tranmitter to receiver also affect the sound quality. The best sound quality at an angle of 900 in bright conditions with a distance of 50 cm is 97.9 dB while in dark conditions with a distance of 50 cm at an angle of 1000 is 98.1 dB.
Optimasi Jaringan 4G LTE pada Jalur Tol Cikopo Palimanan dengan Menggunakan Metode Physical Tuning Yuliana, Hajiar; Hidayat, Muhammad Reza; Permana, Ade Sena; Somantri, Nivika Tiffany; Dharmi, Ni Ketut Hariyawati
Jurnal Teknologi Informasi dan Ilmu Komputer Vol 11 No 3: Juni 2024
Publisher : Fakultas Ilmu Komputer, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jtiik.937828

Abstract

Kebutuhan para pengguna akan layanan komunikasi maupun informasi yang dibutuhkan meningkat dengan cepat sehingga menyebabkan penyedia jasa pada layanan telekomunikasi seluler dituntu untuk berkembang guna memenuhi kebutuhan pengguna atau konsumennya dan terus mengembangkan kemampuan dan teknologi terkini. Dengan memanfaatkan teknologi komunikasi generasi keempat yaitu tekonologi 4G mengharapkan kecepatan jaringan yang cepat. Namun, teknologi 4G ini memiliki beberapa kendala yang menyebabkan kecepatan jaringan menjadi optimasi jaringan untuk memperbaiki kualitas jaringan agar dapat dipakai dengan optimal. Pada penelitian ini dilakukan proses optimasi untuk memperbaiki kondisi level sinyal Reference Signals Received Power (RSRP) di Jalur Tol Cikopo-Palimanan (Cipali). Proses optimasi dilakukan dengan menganalisis kondisi level sinyal RSRP berdasarkan data yang didapatkan dari operator dan di simulasikan di Atoll Planning Software dengan menggunakan metode physical tuning. Berdasarkan hasil data yang didapatkan dari simulasi menggunakan Atoll Planning Software, terdapat beberapa area yang memiliki coverage yang kurang baik dengan level RSRP dibawah -90 dBm, dan area tersebut merupakan area jalur tol yang rawan kemacetan kendaraan karena arus mudik lebaran atau perbaikan jalan. Optimasi dilakukan di 4 spot yang mempunyai kondisi level sinyal yang buruk dan setelah dilakukan optimasi terdapat perbaikan level sinyal dengan warna ungu (sekitar -100 dBm) berubah menjadi warna kuning (sekitar -90 dBm). Hal ini juga mempengaruhi presentase Coverage sinyal di area jalan tol cipali, yaitu terjadi perbaikan dan kenaikan persentase untuk level sinyal diatas -90 dBm yaitu dari 88,73% menjadi 90,67% dan juga mengalami penurunan persentase untuk level sinyal dibawah -90 dBm yaitu dari 11,27 menjadi 9,33%.
Comparative Analysis of ARIMA, Prophet, and Glmnet for Long Term Evolution (LTE) Base Station Traffic Forecasting Juhana, Tutun; Yuliana, Hajiar; Hendrawan, .; Iskandar, .; Musashi, Yasuo
Emerging Science Journal Vol 8, No 6 (2024): December
Publisher : Ital Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/ESJ-2024-08-06-04

Abstract

This study evaluates the performance of three forecasting models—ARIMA, Prophet, and Glmnet—with the primary objective of equipping the telecommunication industry with effective tools for cellular traffic forecasting. These tools lay the foundation for efficient resource management, cost optimization, and enhanced service delivery. The study begins with dataset description and preparation, followed by the selection of traffic forecasting models, and concludes with performance evaluation based on metrics such as Mean Absolute Error (MAE), Mean Absolute Percentage Error (MAPE), Symmetric Mean Absolute Percentage Error (SMAPE), Root Mean Squared Error (RMSE), and Coefficient of Determination (R²). The main contribution of this research is a comprehensive comparison of the three forecasting methods, aiding practitioners and researchers in identifying the best prediction model for specific contexts. The findings reveal that Glmnet consistently outperforms ARIMA and Prophet across all categories of traffic forecasting on the selected performance metrics. Its ability to handle complex data structures, manage multicollinearity, and deliver robust and accurate predictions makes it the preferred choice for forecasting cellular network traffic in the telecommunications domain. Doi: 10.28991/ESJ-2024-08-06-04 Full Text: PDF
Analisis Metode Klasifikasi Pemetaan Tutupan Lahan (Land Cover) di Area Kota Bandung Menggunakan Algoritma Random Forest Pada Google Earth Engine Yuliana, Hajiar; Zahra Cahya Hanifa Rizqiana
EPSILON: Journal of Electrical Engineering and Information Technology Vol 22 No 2 (2024): Journal of Electrical Engineering and Information Technology
Publisher : Department of Electrical Engineering, UNJANI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55893/epsilon.v22i2.119

Abstract

This research aims to map land cover in Bandung City using the Random Forest (RF) algorithm implemented on the Google Earth Engine (GEE) cloud-based platform. Sentinel-2 satellite image data was used to analyze four main classes of land cover, namely residential land, green land, water, and open land. The classification process involved initial data processing, model training using sample data, and accuracy evaluation through confusion matrix and cross-validation. The results showed that the RF algorithm had an overall accuracy of 89%, with the highest accuracy in the residential land class (92%) and the lowest in the water class (80%). Cross-validation showed stable performance with an average accuracy of 88.5%, precision 0.91, recall 0.88, and F1-score 0.89. Confusion matrix analysis identified misclassification in certain classes due to spectral overlap, especially between green land and open area. This research proves that the RF algorithm in GEE is an efficient and accurate method for land cover classification, while supporting spatial planning and environmental management. Further developments could include the use of higher resolution data, advanced learning algorithms and time-based analysis to understand the dynamics of land cover change.
Rancang Bangun Prototipe Monitoring Volume Cairan Infus dan Kapasitas Oksigen Medis dengan Warning System berbasis Internet of Things Somantri, Nivika Tiffany; Adji, Tatag Purnomo; Yuliana, Hajiar; Charisma, Atik; Winanti, Naftalin; Haz, Fauzia; Nurjaman, Dede Furqon
TELKA - Telekomunikasi Elektronika Komputasi dan Kontrol Vol 11, No 2 (2025): TELKA
Publisher : Jurusan Teknik Elektro UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/telka.v11n2.248-261

Abstract

Infus dan oksigen medis merupakan komponen vital dalam perawatan pasien di rumah sakit. Ketidakakuratan dalam pemantauan volume cairan infus dan kapasitas oksigen dapat mengakibatkan keterlambatan penanganan yang membahayakan keselamatan pasien. Penelitian ini bertujuan merancang prototipe sistem pemantauan volume cairan infus dan kapasitas oksigen medis berbasis Internet of Things (IoT) dengan warning system untuk meningkatkan efisiensi perawatan. Sistem ini menggunakan sensor load cell dengan modul HX711 sebagai sensor pendeteksi ketersediaan cairan infus pasien, NodeMCU ESP32 sebagai komponen kontrol yang terhubung dengan jaringan internet, sensor load cell dan Sensor HK1100C untuk membaca kapasitas tekanan oksigen medis pada tabung. Data hasil pengkuran sensor tersebut di sajikan pada web server hinger,io dan google spreadsheet serta dalam tampilan LCD. Hasil pengujian sistem setelah dilakukan perbandingan dengan alat ukur yang terkalibrasi serta pengujian fungsi internet of things didapatkan bahwa alat ini memiliki tingkat keakurasian pembacaaan sensor dengan error 0,37% untuk sensor loadcell dan error 3,72% untuk sensor tekanan oksigen. Prototipe ini diharapkan dapat menjadi solusi otomatis dalam meminimalkan risiko human error dan meningkatkan respons tenaga medis. Infusion and medical oxygen are vital components in patient care in hospitals. Inaccuracy in monitoring the volume of infusion fluids and oxygen capacity can result in delays in treatment that endanger patient safety. This study aims to design a prototype of an Internet of Things (IoT)-based monitoring system for infusion fluid volume and medical oxygen capacity with a warning system to improve care efficiency. This system uses a load cell sensor with the HX711 module as a sensor to detect the availability of patient infusion fluids, NodeMCU ESP32 as a control component connected to the internet network, a load cell sensor and an HK1100C sensor to read the capacity of medical oxygen pressure in the cylinder. The measurement data from the sensor is presented on the thinger.io and google spreadsheet web servers and on the LCD display. The results of system testing after comparison with calibrated measuring instruments and testing the internet of things function showed that this tool has a level of sensor reading accuracy with an error of 0.37% for the load cell sensor and an error of 3.72% for the oxygen pressure sensor. This prototype is expected to be an automatic solution in minimizing the risk of human error and increasing the response of medical personnel.
The ANALISIS PARAMETER QOS (QUALITY OF SERVICE) PADA JARINGAN WIFI DI GEDUNG FAKULTAS TEKNIK UNIVERSITAS JENDERAL ACHMAD YANI DENGAN MENGGUNAKAN WIRESHARK Tiffany, Nivika; Nicko Wahyudi; Atik Charisma; Hajiar Yuliana; Sofyan Basuki; Ade Sena Permana
EPSILON: Journal of Electrical Engineering and Information Technology Vol 23 No 2 (2025): EPSILON - Journal of Electrical Engineering and Information Technology
Publisher : Department of Electrical Engineering, UNJANI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55893/e6py7a65

Abstract

WiFi performance is a pressing need in academic, especially to support learning, research, and communication. In the digital era, the demand for high network quality is increasing along with the heavy dependence on internet access for various academic activities. Therefore, the evaluation of the WiFi network quality in Jenderal Achmad Yani University is focus of this study, the network meets the required quality standards. This study uses a quantitative method with an observational approach to analyze the Quality of Service (QoS) parameters such as throughput, packet loss, delay, and jitter. The quantitative method was chosen because it is able to provide objective and accurately measured data, while the observational approach allows researchers to directly observe internet traffic and measure QoS parameters. Testing was conducted for three days to obtain representative data on the condition of the WiFi network in the building. From the test results conducted, it is known that the quality of the network in the Faculty of Engineering Achmad Yani University is: Average throughput of 1406.76 Kbps, packet loss of 0%, delay of 70.21 ms, jitter of 85.96 ms. With an average overall index of QoS parameters of 3.25 and included in the Good category according to TIPHON.
Co-Authors . Hendrawan . Iskandar Ade Sena Permana Adji, Tatag Purnomo Alimudin, Erna Atik Charisma Atik Charisma Atik Charisma Basuki, Sofyan Charisma, Atik Clarez Bebby Elysees Dede Furqon Nurjaman Dede Irawan Saputra Dharmi, Ni Ketut Hariyawati Een Taryana Fauzia Haz Fauzian, Tubagus Indra Maulana Giri Angga Setia Griffani Megiyanto Rahmatullah Gusvira Lestari Handoko Rusiana Iskandar Handoko Rusiana Iskandar Haz, Fauzia Hendrawan Hermadani Hermadani Hidayat, M. Reza Hidayat, Muhammad Reza Hurianti Vidyaningtyas Irvan Budiawan ISKANDAR M. Reza Hidayat Muhammad Akbar Wibowo Muhammad Fakhri Abdillah Muhammad Iqbal Maulana Musashi, Yasuo Naftalin Winanti Ni Ketut Hariyawati Ni Made Diasti Putri Nicko Wahyudi Nur Adny Muhammad Nur Akbar Setiawan, Rizky Nurjaman, Dede Furqon Permana, Ade Sena Putri, Ni Made Diasti Rady Yusaniar Raka Satya Pratama Rijal Ridwanulloh Rike Indriani, Alifa Salita Ulitia Prini Santoso, Fajar Malik Sofyan Basuki Sofyan Basuki Sofyan Basuki Sofyan Basuki Somantri, Nivika Tiffany Sunubroto Sunubroto Tiffany, Nivika TUTUN JUHANA Winanti, Naftalin Yuda Bakti Zainal Yusaniar, Rady Zahra Cahya Hanifa Rizqiana Zainal, Yuda Bakti