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Optimal Propagation Model for DVB-T2 System in Urban Area Sulistyawan, Vera Noviana; Pamungkas, Damar Purba; Andrasto, Tatyantoro; Fathoni, Khoirudin; Widhira, Sepfianda Eka; Abas, Faizal Ghozali; Setiyani, Hendra Dewinta
ELKHA : Jurnal Teknik Elektro Vol. 16 No.2 October 2024
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/elkha.v16i2.82749

Abstract

The large-scale implementation of analog switch-off for television broadcasting in Indonesia has led to blank spots in several regions. To address this issue, an optimal propagation model is needed. Proper selection and analysis of the channel model can enhance transmitter coverage, increase coverage percentage, improve energy efficiency, and boost field strength due to optimal transmit power. Previous studies have explored various DVB-T2 propagation models, notably the ITU-R P.1812-4 and Longley-Rice models, which are sophisticated and consider various environmental parameters, making them suitable for diverse broadcasting conditions. This research introduces a novel approach by specifically focusing on the urban context of Semarang City, Indonesia, to reduce blank spots by applying the ITU-R P.1812-4 and Longley-Rice propagation models. This study uniquely compares the two models to determine the most effective one for this urban area. Results indicate that the ITU-R P.1812-4 model provides a higher field strength value than the Longley-Rice model, with average field strengths of 108.3425 dBμV/m and 108.2325 dBμV/m, respectively. The difference in average field strength of 0.11 dBμV/m, despite having the same free space loss value of 100.9025 dB, indicates that one model has a slightly stronger signal. This stronger signal can improve coverage by reaching further distances and penetrating obstacles better. Additionally, a stronger signal means less power is needed to maintain the same coverage area, thus improving energy efficiency. This research not only offers empirical data specific to Semarang City but also provides insights that can guide future digital broadcasting optimizations in similar urban environments.
Performance of Single-Hop and Multi-Hop Topologies in IoT-Based Wireless Sensor Networks for Environmental Monitoring Sulistyawan, Vera Noviana; Muhsin, Muhsin; Hasanah, Uswatun; Suni, Alfa Faridh; Pamungkas, Damar Purba; Santoso, Rizal Budi; Aditama, Kevin Muhammad Tegar; Fauzi, Muhamad Kurniawan
Jurnal Sisfokom (Sistem Informasi dan Komputer) Vol. 14 No. 4 (2025): NOVEMBER
Publisher : ISB Atma Luhur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32736/sisfokom.v14i4.2408

Abstract

This study aims to evaluate the performance of an IoT-based Wireless Sensor Network (WSN) system in monitoring temperature and humidity in a modern poultry house. Testing was conducted across two network topologies — single-hop and multi-hop — to analyze data transmission delay and sensor measurement accuracy. The methodology includes measuring the delay from sensor nodes to the sink node and analyzing sensor accuracy by comparing actual temperature and humidity values with sensor readings. The results indicate that the single-hop topology has lower and more stable transmission delays, ranging from 18 ms to 36 ms. In contrast, the multi-hop topology exhibits higher transmission delays, averaging 47.9 ms, due to additional time spent traversing intermediary nodes. In terms of accuracy, the temperature sensor shows minimal deviation from actual values, demonstrating good reliability. However, the humidity sensor exhibits greater variation, necessitating additional calibration or the use of higher-precision sensors. The evaluation using MAPE, RMSE, MSE, and MAE provides further insights into sensor error levels within the system. The uniqueness of this study lies in the comparative analysis of single-hop and multi-hop network performance in a WSN-IoT-based monitoring system. The study's implications emphasize the importance of optimizing network protocols to reduce latency in multi-hop communication and improving sensor accuracy to enhance the reliability of environmental monitoring.
ANALISIS COMPETITIVE FORCE DAN COMPETITIVE STRATEGY SISTEM INFORMASI KULINER DI INDONESIA (STUDI KASUS : Kulina.id) Pamungkas, Damar Purba
Elinvo (Electronics, Informatics, and Vocational Education) Vol. 1 No. 2 (2016): May 2016 (Consist of 7 Articles)
Publisher : Department of Electronic and Informatic Engineering Education, Faculty of Engineering, UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (410.648 KB) | DOI: 10.21831/elinvo.v1i2.10760

Abstract

Tujuan dari penulisan paper ini untuk menganalisis Competitive Force yang di hadapi oleh Kulina dan Competitive Strategy apakah yang dilakukan Kulina dalam mengatasi adanya competitive forces dalam menjalankan bisnisnya. Penulisan paper ini dilakukan untuk menganalisis Sistem Informasi Kulina dengan menggunakan Model Porter. Michael A. Porter menjelaskan lima kekuatan (five forces module) sebagai alat untuk menganalisis lingkungan persaingan industri. Keadaan persaingan perusahaan dalam suatu industri tergantung pada lima kekuatan persaingan dasar yaitu : Rivalry of Competitors, Threat of New Entrants, Threat of substitutes, Bargaining Power of Customers, dan Bargaining Power of Suppliers. Michael A. Porter juga menjelaskan 5 jenis strategi kompetitif, yaitu: Cost Leadership, Differentiation, Innovation, Growth dan Alliance. Hasil analisis ini berupa pernyataan yang menilai keunggulan dan kelemahan sistem informasi yang digunakan perusahaan dalam menghadapi Competitive Force dan Competitive Strategi yang digunakan perusahaan dalam menghadapi pesaingan. Hasilnya dari penelitian ini menunjukkan bahwa (1) Terdapat beberapa Competitive force yang dihadapi oleh perusahaan Kulina dalam menjalankan bisnisnya yaitu (a). Rivalry of Competitors yaitu diantaranya Berry Kitchen, Go-Food, Klik-Eat, Food Panda dan Raja Makan. (b) Threat of New Entrants yaitu diantaranya Greenapronmeal, Owl-Kitchen dan Makan diantar. (c) Threat of substitutes yaitu ssistem informasi kuliner khas dari masing-masing daerah. (d) Bargaining Power of Customers yaitu harga makanan yang terjangkau dan pengiriman yang tepat waktu, dan (e) Bargaining Power of Suppliers yaitu home-chef, restoran dan para pengusaha Catering. Dimana ancaman besar dalam bisnis ini yaitu Rivalry of Competitors, Threat of New Entrants, Bargaining Power of Customers dan Threat of substitutes. Karena banyaknya startup dan developer yang memberikan inovasi baru dalam menciptakan sistem informasi yang tidak kalah baik dalam bisnis kuliner. (2) Strategi kompetitif yang dilakukan Kulina guna menghadapi persaingan dalam bisnis kuliner antara lain yaitu : Beberapa strategi kompetitif yang paling menonjol diterapkan dalam ssistem informasi Kulina, yaitu : Strategi Cost Leadership yaitu dengan memberikan banyak diskon dan potongan harga dalam bentuk voucher, Differentiation yaitu Kulina menyediakan berbagai pilihan paket menu, diantaranya paket hemat, paket diet, paket ekonomis dan kulina juga memberikan garansi penuh. Innovation yaitu Kulina sebagai marketplace antara chef-home, pengusaha sistemg dan restoran dan memberikan innovasi dalam meal-plan dimana user dapat merencanakan menu makan dan program diet untuk beberapa hari kedepan. Dalam Hal ini strategi Alliance dan Growh masih belum terlihat karena Kulina baru menjalani bisnisnya selama dua tahun.