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Analisis Pengaruh Penggunaan AAU pada Swap RRU terhadap Kualitas Layanan Telekomunikasi di Wilayah Pusdikom Cibeureum Cimahi H.D, Ni Ketut; Ayurisa Monaretta Konadi; Fauzia Haz
EPSILON: Journal of Electrical Engineering and Information Technology Vol 21 No 2 (2023): 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/epsilon.v21i2.109

Telecommunications technology continues to undergo advancements. The enabler of communication in the field of telecommunications is the telecommunications equipment installed on a BTS tower. These devices are constantly being updated to improve the service provided by the provider to meet the needs of customers. One of the network technologies currently used is 4G LTE. To enhance the network service, one of the measures taken is performing a swap or upgrade of the telecommunications equipment on a BTS tower. The upgrade of telecommunications equipment is also influenced by the population in the vicinity of the BTS tower. This allows for the replacement of telecommunications devices with ones that have broader coverage and better signal quality. This research, we discuss the issue of network capacity shortage in the Cibeureum area, South Cimahi. This is indicated by the addition of AAUs to the BTS tower in Pusdikom, Cibeureum. This research found data that South Cimahi is the most densely populated area in the city compared to other districts. Therefore, the addition of AAUs is highly effective for this issue. It is known that the AAUs are added to replace the RRUs on the tower. This is because the capacity and transmission channels of AAUs are greater than RRUs. The addition of AAU with 32T32R specifications to the tower improves signal quality with the following parameter values: RSRP(dbm): -68, -72, -76; RSRQ(db): -11, -10, -10; and SNR(db): 1, 1, 4. These values are categorized as good, indicating that the addition of AAU to the tower can effectively increase network capacity and transmission channels, thereby improving network quality in the area.

PERANCANGAN DAN INTEGRASI IOT PADA SISTEM KENDALI AIR KOLAM DENGAN METODE FUZZY BERDASARKAN PH DAN TURBIDITY BERBASIS MIKROKONTROLER H.D, Ni Ketut; Mahardani, Joni
EPSILON: Journal of Electrical Engineering and Information Technology Vol 22 No 1 (2024): 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/epsilon.v22i1.114

In catfish farming it is very important to pay attention to the quality of pond water, including the level of acidity of pond water, and the level of turbidity in the pond. However, some catfish breeders have started to be preoccupied with other activities for quite a long time so that water quality control cannot be controlled anymore. The purpose of this research is to produce a prototype or design of a monitoring and control system for acidity and turbidity levels in pool water that can run automatically and can be monitored remotely using the internet. This study aims to make a prototype control for controlling the pH of catfish pond water using an Arduino Uno as a microcontroller and a pH meter sensor and turbidity sensor. This study uses the fuzzy logic control method. Fuzzy method calculations are performed using two input parameters, namely water turbidity and water pH. The output of the fuzzy calculation results is in the form of a timer, which is the length of time it takes to drain the pool water. The Fuzzy Sugeno method was chosen to control the degree of acidity of the water according to the needs of catfish by draining the water for a duration determined from the results of Fuzzy Sugeno calculations as the z center point. The results of the pH and turbidity sensor readings will be displayed on the LCD and then by Arduino it will be sent to Esp8266 to be forwarded to the user via the Blynk application. Based on the research that has been done, an automatic pH adjustment system has been built and can be accessed through the Blynk application. The accuracy of the pH sensor can read the value of the degree of acidity with an average error of 2.053% so that it can be said that the sensor works quite well because the sensor can still read changes in the degree of acidity in different waters even though the changes are quite small. The turbidity sensor used also has fairly good reliability with an average error of 8.057%. Testing the calculation of the Sugeno method is carried out by comparing the calculation results of Fuzzy Logic Control with the results of Matlab calculations.

PERENCANAAN JARINGAN 5G NR DENGAN METODE CAPACITY PLANNING MENGGUNAKAN FREKUENSI 2.300 MHz DI AREA KOTA CIMAHI H.D, Ni Ketut; Suganda Wijaya , Bagus
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.v22i2.121

The City of Cimahi, one of the developing cities in West Java, requires reliable communication infrastructure to support its economic and social growth. However, Cimahi currently lacks 5G network coverage from any operator. Therefore, this study aims to plan a 5G NR network using the 2,300 MHz frequency for Cimahi. This study employs a quantitative method with a simulation approach using Atoll Planning software. The data analyzed includes Synchronization Signal Reference Signal Received Power (SS-RSRP) levels across the entire area of Cimahi. The study compares the planning results between capacity planning and coverage planning methods previously applied. The analysis involves calculating the network capacity required based on the number of users, area types, and signal quality levels. The analysis reveals significant differences in area coverage and signal quality between the two approaches. Capacity planning, which uses 67 sites, provides a coverage area of 9.591 km² with better signal quality (SS-RSRP > -90 dBm). In contrast, coverage planning with 26 sites covers a larger area of 27.641 km² but with lower signal quality (SS-RSRP < -90 dBm). This research offers valuable insights for designing an optimal 5G network for Cimahi by considering both capacity and coverage needs.

Prototype Aplikasi Sistem Akses Terintegrasi dengan Kartu RFID dan Pengenalan Wajah Berbasis Mikrokontroler Esp32 H.D, Ni Ketut; Muhammad Rafii Satrio
EPSILON: Journal of Electrical Engineering and Information Technology Vol 23 No 1 (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/epsilon.v23i1.128

Building access systems have enhanced security but often rely on costly foreign products. This research aims to develop an employee attendance application that integrates facial recognition using the Siamese network method with RFID for dual authentification. Designed to improve security and efficiency, the application allows for real-time monitoring and data collection of employee access without requiring additional hardware when expanding the system. The study designs an access system based on RFID and facial recognition with the Siamese network method. The system includes RFID nodes, a base station, a WiFi access point, a web dashboard, and a database. The RFID nodes read UID data, which is sent to the base station for verification. The system uses the ESP32 microcontroller and is integrated with a Next.js web server to monitor and manage employee attendance data. The test results indicate that the RFID can read RFID cards within a reading range of approximately 0 to 10 cm. The ESP-NOW communication can transfer data within a time range of 0 to 341 ms and a distance range of 50 to 400 cm between microcontrollers without using an external antenna. The HTTP communication protocol has a data transfer speed of approximately 700 ms with an internet download/upload speed of 10.5/5.41 Mbps. Facial recognition using the Siamese network model achieved an average threshold of 0.736 out of 0.5 under various lighting conditions and distances.

The Optimasi Jaringan 4G LTE Menggunakan Metode Coverage Planning dengan Frekuensi 1800 MHz di Kecamatan Cibitung H.D, Ni Ketut; Fauzia Haz; Reza Zanarsyah Putra
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/wvbvcb53

As a region with rapid urbanization and residential development, Cibitung District faces challenges in achieving equitable 4G network quality. Optimization of 4G coverage has become an essential need. Therefore, this study focuses on optimizing the 4G LTE network in Cibitung District using the coverage planning method through link budget calculations to obtain the Maximum Allowable Path Loss (MAPL). Two propagation models, Okumura-Hata and Cost-231, were then used to estimate the coverage area per cell and the required number of sites. The optimization simulation was conducted using Atoll software to analyze signal coverage distribution based on the Reference Signal Received Power (RSRP) parameter. This method was chosen to estimate coverage capable of reducing blank spots and reaching the entire study area. The results show that using the Okumura-Hata model requires 16 BTS sites, while the Cost-231 model requires 21 BTS sites to cover the entire region. Based on RSRP, good-quality coverage (RSRP ≥ -100 dBm) using the Okumura-Hata model reaches 35.120 km² or 97.95%, while the Cost-231 model only covers 14.921 km² or 41.5% of the total area. This proves that appropriate propagation model selection and coverage optimization strongly influence 4G network implementation in urban areas.

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