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Ummul Khair
Politeknik Negeri Padang
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Pelatihan Pembuatan Aplikasi Android untuk Smart System bagi Siswa SMK Semen Padang Vitria, Rikki; Khair, Ummul; Ramiati, Ramiati; Nita, Sri; Setiawan, Herry
Dedikasi Sains dan Teknologi (DST) Vol. 4 No. 2 (2024): Artikel Riset Nopember 2024
Publisher : Information Technology and Science (ITScience)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/dst.v4i2.4842

Abstract

SMK Semen Padang adalah sekolah di bawah yayasan PT. Semen Padang dan merupakan sekolah kejuruan yang menghasilkan anak didik yang sesuai dengan standar industri. Kurikulum SMK Semen Padang sudah menyesuaikan dengan kebutuhan industri. Siswa-siswi SMK Semen Padang sudah ditahap mengetahui pengaplikasian IoT (Internet of Thing). Namun tingkat pengetahuan dan pemahaman tentang pembuatan aplikasi android untuk smart system belum pernah dicoba dan belum ada diberikan dalam kurikulum di sekolah. Hal ini menjadi permasalahan bagi mitra karena SMK Semen Padang mempunyai keinginan untuk dapat terlibat dalam kegiatan tahun nasional tingkat SMK, yaitu Lomba Krestifitas Mahasiswa. Penjelasan ini merupakan permasalahan utama yang ingin diselesaikan oleh pihak sekolah. Kegiatan pengabdian ini bertujuan untuk memberikan dampak pada pengembangan mata pelajaran bidang TIK khususnya pada materi aplikasi teknologi android dan mendukung siswa untuk memiliki kreatifitas dan inovasi-inovasi sehingga nantinya dapat mengambil peran ikut dalam ajang nasional. Metode yang dipakai pada kegiatan ini yaitu diskusi, ceramah, bimbingan dan pelatihan. Tahap pertama tim PkM memberikan diskusi dan ceramah mengenai aplikasi android pada smart system, selanjutnya tim melakukan bimbingan dan pelatihan pembuatan aplikasi android yaitu Wokwi, ThingSpeak, dan MIT App Inventor. Kegiatan PkM yang sudah dilakukan adalah ceramah materi, bimbingan teknis, pelatihan aplikasi Andorid, implementasi sistem pada smartphone serta penyerahan produk pada pihak mitra. Berdasarkan hasil kuisioner kegiatan PkM pada SMK Semen Padang berjalan dan sesuai dengan target yang di inginkan.
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 Amelia Yolanda Dahlan, Andi Ahmad Dedi Tri Laksono, Dedi Tri Deni Tri Laksono Deri Latika Herda Fardinal, Fardinal Firnanda, Ary Herry Setiawan Katrina Flomina G Khayam, Umar Lifwarda Lifwarda Lumasa R, Ihsan Monika Faswia Fahmi Muhammad Putra Pamungkas R, Ihsan Lumasa Ramiati Ramiati Ranti Komala Dewi Ratna Dewi Rikki Vitria Silfia Rifka Sri Nita, Sri veronica, Vera Yulindon Y