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All Journal Jurnal IPTEK Jurnal Teknologi Elekterika International Journal of Community Service
Sirmayanti, Sirmayanti
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Pemodelan Single-Input Single-Output (SISO) Berbasis OFDM-Cooperative Sirmayanti, Sirmayanti; Umar, Nuraeni; Halide, Lidemar; Sulaeman, Sulaeman
Jurnal Teknologi Elekterika Vol 13, No 2 (2016): Nopember
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (366.729 KB) | DOI: 10.31963/elekterika.v13i2.985

Abstract

Komunikasi Single-Input Single-Output (SISO) pada dasarnya terdiri atas penggunaan pemancar (Tx) dan penerima (Rx) masing-masing untuk satu buah sistem penyambungan. Cooperative wireless merupakan konsep konektivitas eksis yang terjangkau signal oleh setiap perangkat Tx-Rx lain yang memiliki fungsi sama. Untuk mengandalkan pengoperasian sistem multicarrier maka digunakan Orthogonal Frequency Division Multiplexing (OFDM) agar bandwidth yang tersedia setelah spektrum dibagi menjadi sub band menjadi lebih hemat. Tulisan ini hanya mencakup hasil studi literatur yang bertujuan dalam membangun pemodelan SISO Tx-Rx berbasis OFDM-cooperative yang akan lebih mengoptimalkan fungsi perangkat Tx-Rx sebagai sebuah terminal relay, dimana Tx-Rx akan bekerjasama sebagai relay terhadap sistem lainnya.
Youth Creativity Media Empowerment Through Social Media Content Creator Sirmayanti, Sirmayanti; I, Mahjud; I, Puspita; M, Mahyati; M, Rizal; U, Hasanah; N, Mujahida; Y, Yusrianto; MN, Fadli; F, Rahman; N, Adil
International Journal Of Community Service Vol. 2 No. 4 (2022): November 2022 (Indonesia - Malaysia)
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijcs.v2i4.144

Abstract

Generations of Millennial, X, Y and Z are very synonymous with social media presence. More focus on Generation Z which in fact were born in an era that is surrounded by cyberspace with Internet facilities, cellular technology and digital technology that are connected stable. PKM partners are students of MAN 3 Makassar and GMA-community to carry out optimization of science and technology applications through content creators with social media platforms so that Islamic da'wah media is more widespread and affordable to all people. The main target of partners is the digital natives of the Gen-Z. They are the GMA-community Mosque Youth Association which their number are 30% of the community population. The types of PKM activities are learning-by-project-based training and coaching graphic design & video-image editing to target partners so that new skills are formed in the creativity of da'wah content on the created social media platforms. The results of the technology transfer that have been provided are content creator training and the creation of 5 YouTube, Instagram, Facebook, Spotify and Web media accounts equipped as account administrator for managing social media and image and video products of the Islamic da'wah content.
Utilizing Compact 4G LTE Mobile Stations to Enhance Network Coverage in Rural Low-Signal Areas Sirmayanti, Sirmayanti; Ihsary, Muh. Ilham; Mahjud, Ichsan
Jurnal IPTEK Vol 29, No 2 (2025): December
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2025.v29i2.7732

Abstract

A bad spot is an area where signal quality fails to meet Key Performance Indicator (KPI) standards, due to factors such as limited channel capacity, BTS malfunctions, long distances from the BTS, or topographical interference. This study investigates a 4G LTE bad spot case in the rural area of Romanglasa Subdistrict where RSRP levels range from -100 dBm to -120 dBm. Although several e-nodeBs are present around the area, physical obstructions like trees and buildings continue to degrade signal quality. The objective of this study is to effectively implement a Compact Mobile Station (COMBAT), analyze the installation process, and evaluate the network's performance after deployment. The methods used include drive testing, BTS site surveys, simulations, and network design. The installation was carried out in collaboration with Telkomsel using Combat-571 as the cell ID. Following deployment, network quality measurements and post-drive testing were conducted. The results showed significant improvements: download throughput reached 47.6 Mbps, upload 28.4 Mbps, jitter decreased to 7 ms, packet loss dropped to 0%, and latency was reduced to 21 ms. Post-installation RSRP also improved to between -80 dBm and -100 dBm, categorized as good to fair according to KPI standards.
Co-Authors F, Rahman Halide, Lidemar I, Mahjud I, Puspita Ichsan Mahjud Ihsary, Muh. Ilham M, Mahyati MN, Fadli N, Adil N, Mujahida Rizal M Sulaeman Sulaeman U, Hasanah Umar, Nuraeni Y, Yusrianto