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All Journal International Journal of Electrical and Computer Engineering Jurnal Elektronika dan Telekomunikasi Journal of the Civil Engineering Forum
Arumjeni Mitayani
National Research And Innovation Agency
Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering

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SIMONIC: IoT Based Quarantine Monitoring System for Covid-19 Vita Awalia Mardiana; Mochamad Mardi Martadinata; Galih Nugraha Nurkahfi; Arumjeni Mitayani; Dayat Kurniawan; Nasrullah Armi; Budi Prawara; Sudirja Sudirja; Andria Arisal; Rendra Dwi Firmansyah; Andri Fachrur Rozie; Sulaksono Priyo; Sopyan Setiana; Asih Setiarini
Jurnal Elektronika dan Telekomunikasi Vol 21, No 2 (2021)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v21.112-121

Abstract

COVID-19, which has become a global pandemic since March 2020, has tremendously affected human life globally. The negative impact of COVID-19 affects societies in almost all aspects. Implementing quarantine monitoring, also social distancing, and contact tracing are a series of processes that can suppress the new infected COVID-19 cases in various countries. Prior works have proposed different monitoring systems to assist the monitoring of individuals in quarantines, as well as many methods are offered for social distancing and contact tracing. These methods focus on one function to provide a reliable system. In this paper, we propose IoT-based quarantine monitoring by implementing a geofence equipped with social distancing features to offer an integrated system that provides more benefits than one system carrying one particular function. We propose a system consisting of a low cost, low complexity, and reusable wristband design and mobile apps to support the quarantine monitoring system. For the geofencing, we propose a GPS-based geofence system that was developed by taking advantage of the convenience offered by the Traccar application. Meanwhile, we add the notification for social distancing feature with adaptive distance measurement RSSI-based set up in the android application. Based on the experiment we did to validate the system, in terms of wristband-to-smartphone communication, scanning interval in smartphone and advertising interval in wristband is best to set in 7 s for both. For social distancing notification and geofence, we measure the system performance through precision, recall, accuracy, and F-measure.
Cooperative Game Theory Approach for Energy-Efficient Node Clustering in Wireless Sensor Network Chaeriah Bin Ali Wael; Nasrullah Armi; Arumjeni Mitayani; Suyoto Suyoto; Salita Ulitia Prini; Winy Desvasari; Rico Dahlan; Ros Sariningrum
Jurnal Elektronika dan Telekomunikasi Vol 20, No 2 (2020)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v20.76-81

Abstract

Energy consumption is one of the critical challenges in designing wireless sensor network (WSN) since it is typically composed of resource-constrained devices. Many studies have been proposed clustering to deal with energy conservation in WSN. Due to its predominance in coordinating the behaviors of many players, game theory has been considered for improving energy efficiency in WSN. In this paper, we evaluate the performance of cooperative game theoretic clustering (CGC) algorithm which employs cooperative game theory in a form of 3-agent cost sharing game for energy-efficient clustering in WSN. Furthermore, we compared its performance to a well-known traditional clustering method, low-energy adaptive clustering hierarchy (LEACH), in terms of network lifetime and stability, and total residual energy. The simulation results show that CGC has better performance compared to LEACH due to the cooperation among cluster heads in coalition. CGC has higher alive nodes with stability improvement of first node dies (FND) by 65%, and the improvement by 52.4% for half node dies (HND). However, with the increasing of the number of nodes, the performance of LEACH is getting better compared to CGC.
Tsunami Early Warning System Based on Maritime Wireless Communication Aryanti Karlina Nurendyastuti; Mochamad Mardi Marta Dinata; Arumjeni Mitayani; Muhammad Rizki Purnama; Mohammad Bagus Adityawan; Mohammad Farid; Arno Adi Kuntoro; Widyaningtias
Journal of the Civil Engineering Forum Vol. 8 No. 2 (May 2022)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1552.707 KB) | DOI: 10.22146/jcef.2878

Abstract

Tsunami buoy, linked to satellite, is commonly used as a tsunami early warning system but has been discovered to have several drawbacks such as the need for approximately 5 minutes to issue an early warning for a tsunami after detecting the initial wave as well as its fragility. It was also reported that the twenty-two buoys placed in the Indonesian seas from 2012 to 2018 were damaged and missing. Therefore, this study proposes a new method for tsunami early warning by integrating ship-to-ship maritime wireless communication. It is important to note that vessels or fishing boats with over 30 GT have the ability to travel more than 100 nmi (approximately 180 km) from the shoreline and can be equipped with point-to-multipoint VHF radio communication. Meanwhile, smaller boats on the fishing ground located approximately 2-5 km from the shore can use a WiFi network to communicate like a wireless mesh while the existing terrestrial network can be used for the ship-to-shore communication between boats and land stations. This system is expected to provide significant benefits for a fishing town such as Pangandaran, West Java, Indonesia which is directly facing Java Megathrust in the Indian Ocean. Therefore, a tsunami numerical simulation was conducted in this study using Shallow Water Equation which involved a hypothetical tsunami simulated from the possible fault source which is approximately 250 km from the source. Moreover, the vessel’s location was assumed to be in line with the fishing ground while the arrival time of the tsunami was estimated from the model to be 22.5 minutes and compared to the relay time of the proposed system which was approximately 5.4 seconds. This is faster in terms of delay than the existing system which relays information through satellite at approximately 5 minutes in an ideal condition and also has the ability to reduce the need for tsunami buoys.
Improved autocorrelation method for time synchronization in filtered orthogonal frequency division multiplexing Suyoto Suyoto; Agus Subekti; Arief Suryadi Satyawan; Mochamad Mardi Marta Dinata; Arumjeni Mitayani; Purwoko Adhi
International Journal of Electrical and Computer Engineering (IJECE) Vol 13, No 6: December 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v13i6.pp6538-6546

Abstract

Time synchronization is essential in multicarrier systems such as filtered orthogonal frequency division multiplexing (F-OFDM) because it determines the whole system’s performance. Differ with OFDM, where subcarrier allocation is not flexible. In F-OFDM, the subcarrier allocation is more flexible, and the whole subcarrier in one symbol can be grouped into several subbands. The use of subcarriers that are limited to only one subband can reduce the performance of time synchronization based on autocorrelation (AC) methods. In this study, we first compare the performance of the AC-based time synchronization algorithms used in F-OFDM when training symbols are limited to one subband. Secondly, we made improvements to the AC-based time synchronization with the averaging technique of its timing metric, thus increasing the accuracy of time estimates in the F-OFDM system. The averaging technique of the timing metric improved the performance of the AC method in cases where the training symbol is limited to one subband, as shown in the simulation results.
Co-Authors Adityawan, Mohammad Bagus Agus Subekti Andri Fachrur Rozie Andria Arisal Arief Suryadi Satyawan Arno Adi Kuntoro Aryanti Karlina Nurendyastuti Asih Setiarini Budi Prawara Chaeriah Bin Ali Wael Dayat Kurniawan Galih Nugraha Nurkahfi Mochamad Mardi Marta Dinata Mochamad Mardi Marta Dinata Mochamad Mardi Martadinata Mohammad Farid Muhammad Rizki Purnama Nasrullah Armi Purwoko Adhi Rendra Dwi Firmansyah Rico Dahlan Ros Sariningrum Salita Ulitia Prini Sopyan Setiana Sudirja Sudirja Sulaksono Priyo Suyoto Suyoto Suyoto Suyoto Vita Awalia Mardiana Widyaningtias Winy Desvasari