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All Journal Action Research Literate (ARL) Journal of Electrical Engineering, Energy, and Information Technology
W, F. Trias Pontia
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Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Social Sciences

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ANALYSIS OF QUALITY OF SERVICE OF THE 4G LTE NETWORK IN THE WATERFRONT AREA OF PONTIANAK CITY ., Suhardi; Yacoub, Redi Ratiandi; Ade Putra, Leonardus Sandy; W, F. Trias Pontia; Imansyah, Fitri
Journal of Electrical Engineering, Energy, and Information Technology (J3EIT) Vol 12, No 2: August 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/j3eit.v12i2.76409

Abstract

Internet availability must be sufficient to meet the needs of the era, supported by extensive coverage and robust network stability. Every provider competes in the current internet market, especially in Pontianak City. This research aims to analyze the Quality of Service (QoS) of the 4G LTE networks provided by three widely-used providers in the community. The research results indicate that the Quality of Service of the 4G LTE network in the Waterfront area of Pontianak City falls into the good category. Measurements in the afternoon show good quality, supported by the close proximity between the research location and the Base Transceiver Station (BTS) without interference. However, data transfer speed experiences a decline in some measurements, especially during cloudy weather and busy visitor periods, affecting network jitter parameters. In the evening measurements, despite obtaining fairly good values on some parameters, throughput still receives a poor rating. The decrease in quality in jitter parameters occurs on the first and second nights due to the density of visitors and excessive queuing in the network. The reasons for the poor quality of the cellular network include obstacles from tall buildings, longer transmission distances due to river expanses, and bad weather. Internet user density also affects signal strength. Furthermore, the distance between the BTS and devices plays a crucial role in network propagation, so an efficiently designed 4G network should provide even coverage and consistent quality.
Implementasi Potential Field pada Robot Omnidirectional Berbasis LiDAR Menggunakan ROS Prayudi, Ari; Marindani, Elang Derdian; W, F. Trias Pontia
Action Research Literate Vol. 9 No. 7 (2025): Action Research Literate
Publisher : Ridwan Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46799/arl.v9i7.2996

Abstract

Sistem navigasi otonom dikembangkan untuk robot mobile omnidirectional dengan memanfaatkan algoritma Potential Field yang terintegrasi dengan data sensor LiDAR. Robot mampu bergerak menuju titik tujuan dari berbagai arah sambil menghindari rintangan secara real-time. Implementasi menggunakan Robot Operating System (ROS) memungkinkan koordinasi modular antara algoritma kendali, masukan sensor, dan aktuator. Hasil pengujian menunjukkan bahwa robot dapat mencapai titik tujuan baik dalam kondisi tanpa halangan maupun dengan halangan, dengan rata-rata galat posisi akhir di bawah 40 mm dan waktu tempuh rata-rata sekitar 12 detik. Sensor LiDAR menunjukkan akurasi tinggi, dengan galat pengukuran jarak pendek sebesar 2,23% dan jarak jauh sebesar 5,38%. Delay pada topik ROS untuk data LiDAR dan odometri masing-masing rata-rata sebesar 0,50 detik dan 0,08 detik, yang cukup untuk mendukung kendali waktu nyata. Hasil tersebut menunjukkan bahwa kombinasi algoritma Potential Field, sensor LiDAR, dan sistem ROS mampu menghasilkan gerakan robot yang akurat, responsif, dan adaptif terhadap lingkungan.
Co-Authors Elang Derdian Marindani Fitri Imansyah Prayudi, Ari Putra, Leonardus Sandy Ade Suhardi .