Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal PROtek : Jurnal Ilmiah Teknik Elektro KOLONI
Sandryones Palinggi
Politeknik Negeri Ujung Pandang
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Law, Crime, Criminology & Criminal Justice Public Health Social Sciences Other

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Pemanfaatan Aplikasi Online untuk Ujian Akhir Mahasiswa Berbasis Website pada Program Studi Diploma-3 Teknik Telekomunikasi Politeknik Negeri Ujung Pandang Sandryones Palinggi; Riesa Krisna Astuti Sakir; Sufianti Munirman
KOLONI Vol. 1 No. 3 (2022): SEPTEMBER 2022
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/koloni.v1i3.542

Abstract

Learning in the Industrial Revolution 4.0 era indirectly encourages overall changes in the teaching and learning process. The evolution that has occurred has had a big impact so it is hoped that teaching staff and students will be more skilled in using digital platforms as learning media. This research aims to design and gain benefits from online applications for Website-based Final Semester Examinations. With the issue of using single-use paper in the Final Exam for Students of the D3 Telecommunications Engineering Study Program at State Polytechnic of Ujung Pandang, it can be resolved by using a website-based application in implementing the Final Exam as a solution that can be implemented later. The method used in this research is the development method or Research and Development (R&D), where this method focuses on developing an application, or modifying it, so that the objectives of this research can be achieved. The intended application design aims to make it easier for students to access and carry out various types of activities on a website portal that can be controlled and monitored. In completing this research, Moodle was chosen to resolve an issue that was raised, and it is hoped that it can be the right solution as a concrete step for the contribution of lecturers, especially in resolving issues related to the continued use of single-use paper in the final semester exams for students of the D3 Telecommunications Engineering Study Program. From the issues raised, the use of online applications for website-based student final exams in the D3 Telecommunications Engineering Study Program is a solution that can be implemented as soon as possible.
Performance Evaluation of Modulation Schemes on HAPS 28 GHz Backhaul Link: Reliability Analysis and Spectral Efficiency Trade-off Sandryones Palinggi; Umar Katu; Ichsan Mahjud
PROtek : Jurnal Ilmiah Teknik Elektro Vol 13 No 3 (2026): Protek : Jurnal Ilmiah Teknik Elektro
Publisher : Program Studi Teknik Elektro Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/protk.v13i3.12651

Abstract

Selecting modulation schemes for High-Altitude Platform Station (HAPS) backhaul links at 28 GHz is critical, as higher-order modulations improve spectral efficiency but degrade reliability under tropical conditions. This study evaluates the trade-off for QPSK and 16-QAM through link budget analysis, log-normal fading modeling with 2.5 dB tropospheric scintillation variance, and outage probability estimation via Q-function under three scenarios: clear-sky, rain attenuation, and worst-case (rain + turbulence). Results show that 16-QAM achieves fourfold spectral efficiency improvement (0.8 to 3.2 bps/Hz) but requires 8.2 dB additional Eb/No, degrading receive margin from 12.1 dB to 2.1 dB under rain, with availability dropping from >99.9999% to 80–90%. QPSK maintains a rain margin of 16.3 dB and availability exceeding 99.9999%. These findings confirm that static 16-QAM deployment is unsuitable for tropical environments. Adaptive modulation with dynamic QPSK/16-QAM switching based on real-time channel state information is recommended for reliable HAPS deployment in Indonesia.
Co-Authors Ichsan Mahjud Riesa Krisna Astuti Sakir Sufianti Munirman Umar Katu