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All Journal Jurnal Ilmiah Poli Rekayasa Elektron Jurnal Ilmiah ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika JURNAL NASIONAL TEKNIK ELEKTRO JOIV : International Journal on Informatics Visualization Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Brilliance: Research of Artificial Intelligence International Journal of Advanced Science Computing and Engineering International Journal of Wireless And Multimedia Communications JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Development JURNAL PENGABDIAN PEMBANGUNAN PERTANIAN DAN LINGKUNGAN (JP3L) PERFECT: Journal of Smart Algorithms
Lifwarda Lifwarda
Politeknik Negeri Padang
Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Library & Information Science Mathematics Mechanical Engineering Social Sciences Other

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Manufacturing A Fiber Optic Based Trainer Module Using The Star Topology Method Using Optical Distribution Point (Odp) And Optical Termination Box (Otb) Nilna, Mellya Gusriva; Asril, Aprinal Adila; Lifwarda, Lifwarda
JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Development Vol. 2 No. 2 (2025): JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Dev
Publisher : LEMBAGA KAJIAN PEMBANGUNAN PERTANIAN DAN LINGKUNGAN (LKPPL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jataed.v2i2.63

Abstract

Optical fiber is a transmission medium made from glass that is used to transmit information in the form of light. As time goes by, the need for fast telecommunications services in data exchange is increasing. However, there are problems with optical fibers such as high attenuation or connection errors that interfere with performance. In this final project, a trainer module was designed regarding splicing and measuring fiber attenuation to help students understand how to connect optics properly and correctly. This module uses devices such as ODP and OTB which are connected to each other. The research results show that the highest attenuation measured was 20.15 dB, while the lowest attenuation value was 0.29 dB. Attenuation corresponding to the calculated link budget of 1.7605 dB indicates good results, while high attenuation indicates poor quality.
Implementation Of Internet Of Things (Iot) Based Lecture Schedule In Building G Floor 3 Padang State Polytechnic Wulandari, Anggelina; Lifwarda, Lifwarda; Firdaus
International Journal of Wireless And Multimedia Communications Vol. 1 No. 1 (2024): International Journal of Wireless And Multimedia Communications
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jowim.v1i1.6

Abstract

The internet of things-based lecture schedule aims to improve the efficiency and effectiveness of time management. Thus, students, lecturers, and staff can know the time change so that they can prevent delays. By using Arduino Uno as the main component microcontroller, RTC as a clock module that calculates the time that will be displayed on the LCD. Bell and Speaker will sound when the clock on the RTC is the same as the inputted schedule clock, then sent to IoT via the ESP01 wifi module. This tool can also be used as a medium for delivering information because it is equipped with a mic. The RTC in this tool successfully calculates the time according to real time where the Bell and Speaker can work on time according to the schedule. When the bell sounds the measured voltage is 225 volts while the speaker is 2 volts. This tool has also been connected to ThingSpeak using the ESP01 wifi module.  
Analysis Of Hybrid Relay Selection In SDR-Based Cooperative Systems Khair, Ummul; Lumasa R, Ihsan; Veronica, Vera; Lifwarda, Lifwarda; Rifka, Silfia
Brilliance: Research of Artificial Intelligence Vol. 5 No. 2 (2025): Brilliance: Research of Artificial Intelligence, Article Research November 2025
Publisher : Yayasan Cita Cendekiawan Al Khwarizmi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/brilliance.v5i2.7135

Abstract

The cooperative communication system, involving multiple nodes that assist each other in data transmission, has been studied. In this system, the source sends information not only directly to the destination but also through an intermediate relay node. The relay receives the signal, which is then forwarded to the destination, resulting in the reception of two copies of the signal. Combining these signals results in enhanced strength and reliability. This configuration addresses signal fading issues commonly encountered in wireless communication due to reflection, scattering, and interference. The Hybrid Relay Protocol (HRP), combining Decode-and-Forward (DF) and Amplify-and-Forward (AF) methods, was implemented to improve relay efficiency and adaptability. The relay’s protocol choice depends on instantaneous Signal-to-Noise Ratio (SNR); if the SNR exceeds a threshold, DF is applied by decoding and forwarding a clean signal, otherwise, AF is used by amplifying and forwarding the received signal without decoding. Relay selection is optimized based on channel gains using a harmonic mean metric. MATLAB simulations demonstrated that the HRS system, with relay distances ranging from 4 to 12 meters, achieves significantly improved Bit Error Rate (BER) performance, for instance, obtaining BER as low as 0.00012 at 4 meters and ?23.5 dBm transmit power. Additionally, maximal ratio combining was employed at the destination, enhancing signal reliability. The results confirm the effectiveness of the HRS system for real-time applications on Software-Defined Radio (SDR) platforms, with potential for improving wireless network robustness under diverse channel conditions.
Co-Authors - Andrizal - Hendrick Adila , Aprinal Afrizal Yuhanef Ahmad Efendi, Rostam Amelia Yolanda Anas, Ramiati Anna Yudanur Aprinal Adila Asril Aulia Rahma, Erin Botto-Tobar, Miguel Dahlan, Andi Ahmad Fajria, Nurul Firdaus Firdaus Firdaus Firdaus Firdaus Herry Setiawan Ihsan Lumasa Rimra Kasmar, Andre Febrian Komanjali, Yuliano Lumasa R, Ihsan Maria, Popi Mawandri, Azra Milda Yuliza Nawi, Nasrul Nilna, Mellya Gusriva Prasetia, Robby Adrian Putri, Dwi Kemala Ramiati Ramiati Ratna Dewi Ratna Dewi Rikki Vitria Rimra, Ihsan Lumasa Rivanol Chadry Ronal Hadi Silfia Rifka Siska Aulia Ummul Khair Uzma Septima veronica, Vera Wulandari, Anggelina Yenniwarti Rafsyam Yuhefizar Yuhefizar Yul Antonisfia Yulindon Yustini Zulharbi