Ardian Ulvan

@unila.ac.id

Dept. Electrical Engineering, Faculty of Engineering
University of Lampung

Ardian Ulvan


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https://researchid.co/ardian.ulvan

RESEARCH, TEACHING, or OTHER INTERESTS

Electrical and Electronic Engineering, Computer Networks and Communications, Artificial Intelligence, Safety, Risk, Reliability and Quality
30

Scopus Publications

439

Scholar Citations

8

Scholar h-index

6

Scholar i10-index

Scopus Publications

  • Data Transmission of LoRa as Wireless Sensor Network for Integrated Krakatau Observatory Network
    Journal of Electrical and Electronics Engineering, 2025
  • IoT devices based on the ESP32 ultrawideband (UWB) for accurate livestock
    Aryanto, Melvi, Ardian Ulvan
    Aip Conference Proceedings, 2024
  • Vegetation Characteristics and the Estimation of Above-Ground Biomass and Carbons Stock in Petengoran Mangrove Forest, Lampung Bay, Indonesia
    Ladiva Nirmala Ulvan, Indah Trisnawati, Melvi Ulvan, Ardian Ulvan
    2024 IEEE International Workshop on Metrology for Agriculture and Forestry Metroagrifor 2024 Proceedings, 2024
    Mangrove is an important blue carbon ecosystem that plays a significant role in mitigating climate change. They are known for their ability to absorb and store atmospheric carbon into the biomass. In this study, the above-ground biomass, carbon stock, and the relationship between vegetation characteristic (density and canopy coverage) and carbon stock are examined. Allometric equations were used to obtain carbon stock values in four zones of Petengoran Mangrove Forest. Three species were identified at the research site. The order of their contribution to the overall carbon stock was Rhizophora apiculata > Rhizophora mucronata > Sonneratia alba. The average above-ground biomass obtained was 114.616 t/ha, while the carbon stock was 53.870 t C/ha. It was also seen that different density and canopy coverage in each zone contributed to regional variations in the value of the carbon stock, demonstrating that the characteristics of vegetation affect the values of the carbon stocks.
  • Design of Eddy Gas Analyzer as Carbon Sensing Device to Measure CO2 Gas in Oil Palm Plantation
    Ardian Ulvan, Hana Yunus Putri, Mona Arif Muda Batubara, Aryanto, Heru Pranoto, Melvi
    2024 IEEE International Workshop on Metrology for Agriculture and Forestry Metroagrifor 2024 Proceedings, 2024
    Climate change and global warming are pressing issues, with CO2 being a primary driver. Oil palm plantations are often associated with significant CO2 emissions due to deforestation, peatland exploitation, and mill operations. To support mitigation efforts and enhance sustainability in the oil palm industry, accurate and continuous monitoring of CO2 concentrations is crucial. This work presents the design, implementation, and testing of an IoT -based device called the Eddy Gas Analyser, which measures the concentration of CO2 gas and related weather variables. This analyser serves as a key component in the eddy covariance method, one of the most accurate and non-destructive techniques for measuring carbon emissions. The Eddy Gas Analyser utilizes industrial-grade micro controllers and CO2 sensors, along with sensors for water vapor, temperature, humidity, and barometric pressure. While not a complete eddy covariance system (as it lacks a 3D wind speed sensor), this device provides essential data for CO2 flux calculations. The IoT integration allows for real-time data transmission and remote monitoring, potentially enabling more widespread and cost-effective deployment compared to traditional systems. Two Eddy Gas Analyser units were installed at heights of 1m and 7m on a 31m meteorological tower in an oil palm plantation. Commissioning tests conducted over a 7-day period demonstrated the functionality, durability, and reliability of the devices. The results showed distinct CO2 concentration patterns at different heights, highlighting the potential for this system to capture vertical CO2 gradients. This study lays the groundwork for a more comprehensive eddy covariance system and represents a step towards developing low-cost, innovative solutions for monitoring carbon emissions in agricultural settings. Future work will focus on integrating 3D anemometer measurements and extending the monitoring period to capture long-term trends and seasonal variations.
  • Design of A Low Cost Three Dimensional Anemometer Device for Carbon Flux Measurement
    Melvi, Setiawan Margo Waluyo, Irfan Mirda, Muhammad Rafif Musyaffa, Mona Arif Muda Batubara, Aryanto, Heru Pranoto, Ardian Ulvan
    2024 IEEE International Workshop on Metrology for Agriculture and Forestry Metroagrifor 2024 Proceedings, 2024
    Eddy covariance method has been widely used to measure the flux of CO2 gas exchange between ecosystems and the atmosphere, typically employing gas analysers and 3D anemometers. However, the high cost of these devices often limits their widespread application. This research aims to design and build an affordable 3D anemometer using low-cost airspeed sensors. Our main objective is to develop a 3D anemometer device capable of measuring three-dimensional wind speed and direction, and to perform data acquisition for potential use in carbon flux measurements. The research method employed is experimental, involving the design, manufacture, and direct application of the device in a palm oil plantation. We present a novel design using six digital airspeed sensors arranged in a 3D Cartesian coordinate system. The device utilizes an Arduino Portenta H7 microcontroller for data acquisition and Raspberry Pi 5 for data logger and data transmission. The device's design minimizes aerodynamic interference, and the sensors were calibrated to ensure accurate readings. Our results demonstrate the successful construction of a 3D anemometer device with a power consumption of 2.2 Wh, reflecting achievements in both power efficiency and cost-effectiveness. The commissioning test was done for 7 days, in which the device was tested on measuring the speed and direction of carbon flux continuously for 40 minutes in every hours. The system achieved a data acquisition success rate of 99.93%, demonstrating high reliability. Additionally, we present raw data visualizations and discuss the device's ability to measure wind speed and direction in all three dimensions. These findings support the potential application of 3D anemometer devices in understanding and monitoring ecological processes involving changes in carbon dioxide in the environment. Although this initial test focused on raw sensor data, future work will include direct comparisons with state-of-the-art 3D anemometers and demonstration of its application in eddy covariance measurements The results indicate that this low-cost solution holds promise for practical use in environmental monitoring and agricultural applications.
  • The application of a low-cost microcomputer logger with pressure-temperature based sensor for coastal observations: A preliminary study
    M Batubara, J Risandi, A Sufyan, A Pamungkas, K S Wardhani, W Hendriyono, S Husrin, Y Ulumuddin, R Hidayat, Handrio, A Ulvan, Muhajirin, F Alfahmi
    Iop Conference Series Earth and Environmental Science, 2024
    Nearshore hydrodynamics, such as water level fluctuations, field observations play a crucial role in understanding and monitoring the dynamics of the coastal region. The observed parameters provide insight into oceanographic processes, climate change impacts, and the behavior of marine ecosystems that could be valuable for coastal management and infrastructure development planning. Most of the available hydrodynamic loggers are provided by companies with relatively high prices. Due to limited budgets, many areas including Indonesia waters, have limited hydrodynamic observation data. In this paper, we presented a prototype of a simple (DIY-Do It Yourself) and low-cost water level logger with a microcomputer that could be applied in coastal regions. The system consists of a pressure-based sensor to detect water level fluctuations, a temperature sensor, a single-board microcomputer and data logger, and a power supply with different sampling frequencies for various coastal applications. The result showed the ability of the microcomputer system to measure high-resolution water levels and temperatures applicable for non-directional waves, tides and non-tides observations, and ecological monitoring. The microcomputer’s low power consumption makes it suitable for long-term coastal observations, even in remote or battery-powered applications. The body of the logger is designed from PVC-nylon with sensors made from waterproof and corrosion-free materials to ensure its applicability for coastal monitoring. Moreover, the flexibility of the microcomputer system allows for customization and adaptation to specific research requirements at relatively affordable prices.
  • Enhanced cloud based mobile core network with network function virtualization
    H D Septama, A Ulvan, M Pratama
    Iop Conference Series Materials Science and Engineering, 2020
    The mobile technology is improved by adopt the Internet Protocol (IP) based technology. The IP Multimedia Subsystem or IP Multimedia Core Network Subsystem (IMS) is a technology designed by 3rd Generation Partnership Project (3GPP). This technology used IP to deliver the communication packet and recognized as Next Generation Network (NGN). The emerging IP based technology took a lot of advantages by using IP to deliver a packet. However, some issues i.e. availability, security and reliability still need consideration to meet the telecommunication standard. The cloud based computing become buzzword as a technology for cost reduction and hardware efficiencies. This paper conducted the feasibility to setup mobile core network in cloud based environment and enhanced it with network function virtualization (NFV) feature. The NFV made the network more scalable, efficient and robust network management. The QoS is presented as the results to concluded the feasibilities. The results show that cloud based mobile core network with NFV is feasible since the QoS still full fill the telecommunication standard.
  • PREFACE
    Iop Conference Series Materials Science and Engineering, 2019
    PREFACE The 4th International Conference on Science, Technology and Interdisciplinary Research (IC-STAR 2018) was organized by University of Lampung, in Tanjung Pandan, Belitung, Indonesia, on August, 29th - 30th 2017. Following the successful of previous events, IC-STAR 2018 shared and highlighted the original and novel ideas, significant advances, the technological state-of-the-art, current status, and future challenges on all aspects related to the research and development in the field of science, engineering and technology, and their inter-discipline cross-linked. IC-STAR 2018 accomplished as a forum for information dissemination, gathering, and networking for academia, researchers, engineers, and professionals within the areas. The conference also provided advanced orientation and understanding for related industries and academia to looking across industrial partnerships, business strategic, and policy and regulations, including the environmental awareness and the mitigation of natural disasters. One of the most important outcomes of IC-STAR 2018 was the understanding to emphasize Krakatau and its potential disaster as a common issue and interest. List of Editorial board, IC-STAR 2018 Committee and Conference Photographs are available in this pdf.
  • Preface
    Ulvan, A., Sukmana, I., Kurniawan, Denni
    Iop Conference Series Materials Science and Engineering, 2018
    Preface The 3rd International Conference on Science, Technology and Interdisciplinary Research (IC-STAR 2017) was organized by University of Lampung, in Bandar Lampung, Indonesia, on September, 18 – 20, 2017. The IC-STAR is a foremost annual forum for sharing and highlight original and novel ideas, significant advances, the state-of-the-art, current status, and future challenges on all aspects related to the research and development in the field of science, engineering and technology, and their inter-discipline subjects. IC-STAR is also intended to be the platform for information dissemination, gathering, and networking for academia, researchers, engineers, and professionals within the areas. The conference was also planned to provide advanced orientation and understanding for related industries and governments to looking across industrial partnerships, business strategic, and policy and regulations, with expected for a wider range of participants and readers. This year the scientific committee received 128 submitted papers, by which 84 papers was selected and presented in the conference. The peer-review processes have been done based on the originality, impact, novelty, and the close relation to the area of the conference. The presented papers were selected to be published in several journal partners, including the IOP Conference Series: Materials Sciences and Engineering. In this volume, 29 papers were selected from IC-STAR 2017 and its conference partner. We are pleased and thankful for all distinguish authors and reviewers for their contribution that have made this publication possible. We do hope that you will enjoy this publication and find it as a useful guide and reference. List of Editorial board, IC-STAR 2017 Committee Members, Photos are available in this pdf.
  • Combined centralised and distributed mechanism for utilisation of node association in broadband wireless network
    A Ulvan, M Ulvan, H Pranoto
    Iop Conference Series Materials Science and Engineering, 2018
    Mobile broadband wireless access system has the stations that might be fixed, nomadic or mobile. Regarding the mobility, the node association procedure is critical for network entry as well as network re-entry during handover. The flexibility and utilisation of MAC protocols scheduling have an important role. The standard provides the Partition Scheme as the scheduling mechanism which separates the allocation of minislots for scheduling. However, minislots cannot be flexibly reserved for centralised and distributed scheduling. In this paper we analysed the scheduling mechanism to improve the utilisation of minislots allocation during the exchange of MAC massages. The centralised and distributed scheduling is implemented in some topology scenarios. The result shows the proposed mechanism has better performance for node association than partition scheme.
  • Spectrum-less communication by virtualizing the core network of 4G wireless network
    Arpn Journal of Engineering and Applied Sciences, 2017
  • The analysis of signalling process of the services in integrated IMS
    Arpn Journal of Engineering and Applied Sciences, 2016
  • Design and implementation web based geographic information system for public services in Bandar Lampung City - Indonesia
    Gigih Forda Nama, Melvi Ulvan, Ardian Ulvan, Abdul Munif Hanafi
    Proceedings 2015 International Conference on Science in Information Technology Big Data Spectrum for Future Information Economy Icsitech 2015, 2016
  • Dynamic tunnel switching using network functions visualization for HA system failover
    Hery Dian Septama, Ardian Ulvan, Gigih Forda Nama, Melvi Ulvan, Robert Bestak
    Proceedings 2015 International Conference on Science in Information Technology Big Data Spectrum for Future Information Economy Icsitech 2015, 2016
  • High available VoIP server failover mechanism in Wide Area Network
    Hery Dian Septama, Ardian Ulvan, Jiri Hlavacek, Robert Bestak
    Telkomnika Telecommunication Computing Electronics and Control, 2015
  • Voice quality of VoIP in high availability environment
    H. D. Septama, A. Ulvan, J. Hlavacek, R. Bestak
    International Conference on Electrical Engineering Computer Science and Informatics Eecsi, 2014
  • Integrated IMS-femtocell testbed
    Ardian Ulvan, Melvi Ulvan, Robert Bestak
    2013 36th International Conference on Telecommunications and Signal Processing Tsp 2013, 2013
  • Handover procedure and decision strategy in LTE-based femtocell network
    Ardian Ulvan, Robert Bestak, Melvi Ulvan
    Telecommunication Systems, 2013
  • Retransmission issue of SIP session over UDP transport protocol in IP Multimedia Subsystem - IMS
    Heru Pranoto, Ardian Ulvan
    Proc of 2013 3rd Int Conf on Instrumentation Communications Information Technol and Biomedical Engineering Science and Technol for Improvement of Health Safety and Environ Icici Bme 2013, 2013
  • The study of handover procedure in LTE-based femtocell network
    Ardian Ulvan, Robert Bestak, Melvi Ulvan
    2010 3rd Joint IFIP Wireless and Mobile Networking Conference Wmnc 2010, 2010
  • Handover scenario and procedure in lte-based femtocell networks
    Ubicomm 2010 4th International Conference on Mobile Ubiquitous Computing Systems Services and Technologies, 2010
  • IMS signalling in lte-based femtocell network
    Ubicomm 2010 4th International Conference on Mobile Ubiquitous Computing Systems Services and Technologies, 2010
  • The analysis of scanning time in IEEE802.16m's handover procedure
    Ardian Ulvan, Robert Bestak
    2009 16th International Conference on Systems Signals and Image Processing Iwssip 2009, 2009
  • The study of IMS functionality in femtocell environment
    Melvi Ulvan, Robert Bestak, Ardian Ulvan
    Proceedings Micc 2009 2009 IEEE 9th Malaysia International Conference on Communications with A Special Workshop on Digital Tv Contents, 2009
  • IEEE802.16 MAC management messages: The overhead and efficiency analysis in mesh topology
    Ardian Ulvan, Melvi Ulvan, Robert Bestak
    Proceedings Micc 2009 2009 IEEE 9th Malaysia International Conference on Communications with A Special Workshop on Digital Tv Contents, 2009
  • The overhead and efficiency analysis on WiMAX's MAC management message
    Internetworking Indonesia Journal, 2009
  • The efficiency performance on Handover's scanning process of IEEE802.16m
    Ardian Ulvan, Robert Bestak
    IFIP Advances in Information and Communication Technology, 2009
  • Multiple cell partitions for increasing the CDMA-based cell capacity
    Ardian Ulvan, Diogo Ribeiro, Robert Bestak
    IFIP International Federation for Information Processing, 2008
  • The analysis of IEEE802.16e MAC layer overhead and efficiency in PMP topology
    Ardian Ulvan, Vit Andrlik, Robert Bestak
    5th IEEE and IFIP International Conference on Wireless and Optical Communications Networks Wocn 2008, 2008
  • Transmission performance of flexible relay-based networks on the purpose of extending network coverage
    Ardian Ulvan, Robert Bestak
    IFIP International Federation for Information Processing, 2007

RECENT SCHOLAR PUBLICATIONS

  • Data Transmission of LoRa as Wireless Sensor Network for Integrated Krakatau Observatory Network
    M Ulvan, M Batubara, S Husrin, A Aryanto, N Tanti, A Ulvan
    Journal of Electrical and Electronics Engineering 18 (2), 97-102 , 2025
    2025
  • DESAIN ALGORITMA SELF-SUPERVISED VISION TRANSFORMER LEARNING UNTUK PERANGKAT LOW ENERGI IOE PERINGATAN DINI TSUNAMI: Aryanto, Melvi, A Ulvan, E Komalasari Jurusan Teknik …
    A Aryanto, M Melvi, A Ulvan, E Komalasari
    Prosiding Seminar Nasional Ilmu Teknik Dan Aplikasi Industri Fakultas Teknik … , 2025
    2025
  • Design of A Low Cost Three Dimensional Anemometer Device for Carbon Flux Measurement
    SM Waluyo, I Mirda, MR Musyaffa, MAM Batubara, H Pranoto, A Ulvan
    2024 IEEE International Workshop on Metrology for Agriculture and Forestry … , 2024
    2024
  • Vegetation Characteristics and the Estimation of Above-Ground Biomass and Carbons Stock in Petengoran Mangrove Forest, Lampung Bay, Indonesia
    LN Ulvan, I Trisnawati, M Ulvan, A Ulvan
    2024 IEEE International Workshop on Metrology for Agriculture and Forestry … , 2024
    2024
  • Design of Eddy Gas Analyzer as Carbon Sensing Device to Measure CO 2 Gas in Oil Palm Plantation
    A Ulvan, HY Putri, MAM Batubara, H Pranoto
    2024 IEEE International Workshop on Metrology for Agriculture and Forestry … , 2024
    2024
  • IoT devices based on the ESP32 ultrawideband (UWB) for accurate livestock
    Aryanto, Melvi, A Ulvan
    AIP Conference Proceedings 2970 (1), 040011 , 2024
    2024
  • The application of a low-cost microcomputer logger with pressure-temperature based sensor for coastal observations: A preliminary study
    M Batubara, J Risandi, A Sufyan, A Pamungkas, KS Wardhani, ...
    IOP Conference Series: Earth and Environmental Science 1350 (1), 012034 , 2024
    2024
    Citations: 2
  • Pemikiran Moderatif Ushul Fiqh Ibn Rusyd Dalam Pembentukan Hukum
    S Su'eb
    Minaret Journal of Religious Studies 2 (1) , 2024
    2024
    Citations: 3
  • PELESTARIAN HUTAN MANGROVE DAERAH PESISIR DALAM UPAYA ANTISIPASI PERUBAHAN IKLIM
    A Aryanto, I Mirda, M Melvi, A Ulvan
    NUSANTARA: Jurnal Ilmu Pengetahuan Sosial 11 (3), 882-890 , 2024
    2024
    Citations: 1
  • Pengembangan Canti sebagai Desa Wisata Pesisir Tangguh Bencana Berbasis pada Kearifan Lokal
    M Melvi, MA Muda, YRS Akbar, Y Wahidy, A Ulvan
    Jurnal Nusantara Mengabdi 4 (1), 1-9 , 2024
    2024
    Citations: 4
  • Implementasi Modul Arduino untuk Meningkatkan Pembelajaran 4.0 di SMK SMTI Bandar Lampung
    M Aryanto, A Ulvan, AS Samosir
    Prosiding SENAPATI 5 (1) , 2023
    2023
  • Rancang Bangun Sistem Monitoring Ketinggian Muka Air Laut Menggunakan Arduino Pro Mini dan NodeMCU ESP8266
    M Melvi, A Ulvan, MR Sidiq, MAM Batubara
    Jurnal Teknologi Riset Terapan 1 (1), 27-38 , 2023
    2023
    Citations: 8
  • Analisis Kapasitas Short Message Service (SMS) dan Probability Packet Loss pada Sistem Peringatan Dini Nirkabel di Tangki Fluida
    M Melvi, A Ulvan, A Aditama, MAM Batubara
    Jurnal Teknologi Riset Terapan 1 (1), 39-54 , 2023
    2023
    Citations: 3
  • Unjuk Kerja Teknologi Akses Jamak TD-CDMA dan TD-SCDMA pada Infrastruktur Jaringan High Altitude Platform Stations
    M Melvi, N Nurhayati, MAM Batubara, HD Septama, A Ulvan
    Jurnal Teknologi Riset Terapan 3 (1), 33-41 , 2023
    2023
    Citations: 13
  • Analisis Rancangan Antena Telemetri Jenis Dipole Pada Unmanned Aerial Vehicle (UAV)
    M Melvi, CA Shevia, Y Yuniati, MAM Batubara, A Ulvan, A Aryanto
    Jurnal Teknologi Riset Terapan 1 (2), 81-89 , 2023
    2023
    Citations: 4
  • Perancangan Antena Helix Frekuensi 433 MHz Pita Lebar
    M Melvi, F Lestari, A Ulvan, A Aryanto, MAM Batubara
    Jurnal Teknologi Riset Terapan 1 (2), 91-106 , 2023
    2023
    Citations: 4
  • Proportional and simultaneous control system design for portable ventilators based on internet of things
    Aryanto, A Ulvan, Melvi
    AIP Conference Proceedings 2563 (1), 030001 , 2022
    2022
  • Real-time Monitoring of Biomass Temperature and Humidity Based on the Internet of Things
    A Aryanto, M Ulvan, A Ulvan
    2021
  • Estimating the number of trees in Margasari mangrove forests of Lampung through aerial images using adaptive thresholding and contour extraction methods
    MA Batubara, S Alam, K Nisa, RWA Utami, H Fitriawan, A Ulvan
    International Conference on Sustainable Biomass (ICSB 2019), 131-136 , 2021
    2021
    Citations: 3
  • Real-time Monitoring of Biomass Temperature and Humidity Based on the Internet of Things
    A Ulvan
    International Conference on Sustainable Biomass (ICSB 2019), 236-239 , 2021
    2021

MOST CITED SCHOLAR PUBLICATIONS

  • Handover procedure and decision strategy in LTE-based femtocell network
    A Ulvan, R Bestak, M Ulvan
    Telecommunication systems 52 (4), 2733-2748 , 2013
    2013
    Citations: 139
  • The study of handover procedure in LTE-based femtocell network
    A Ulvan, R Bestak, M Ulvan
    WMNC2010, 1-6 , 2010
    2010
    Citations: 90
  • Design and implementation web based geographic information system for public services in Bandar Lampung City—Indonesia
    GF Nama, M Ulvan, A Ulvan, AM Hanafi
    2015 International Conference on Science in Information Technology (ICSITech … , 2015
    2015
    Citations: 35
  • The enhancement of handover strategy by mobility prediction in broadband wireless access
    A Ulvan, M Ulvan, R Bestak
    Proceedings of the networking and electronic commerce research conference … , 2009
    2009
    Citations: 32
  • Unjuk Kerja Teknologi Akses Jamak TD-CDMA dan TD-SCDMA pada Infrastruktur Jaringan High Altitude Platform Stations
    M Melvi, N Nurhayati, MAM Batubara, HD Septama, A Ulvan
    Jurnal Teknologi Riset Terapan 3 (1), 33-41 , 2023
    2023
    Citations: 13
  • The analysis of scanning time in IEEE802. 16m's handover procedure
    A Ulvan, R Bestak
    2009 16th International Conference on Systems, Signals and Image Processing, 1-5 , 2009
    2009
    Citations: 12
  • IMS signalling in ltebased femtocell network
    M Ulvan, R Bestak, A Ulvan
    UBICOMM 2010: The Fourth International Conference on Mobile Ubiquitous … , 2010
    2010
    Citations: 9
  • Rancang Bangun Sistem Monitoring Ketinggian Muka Air Laut Menggunakan Arduino Pro Mini dan NodeMCU ESP8266
    M Melvi, A Ulvan, MR Sidiq, MAM Batubara
    Jurnal Teknologi Riset Terapan 1 (1), 27-38 , 2023
    2023
    Citations: 8
  • Retransmission issue of SIP session over UDP transport protocol in IP Multimedia Subsystem-IMS
    H Pranoto, A Ulvan
    2013 3rd International Conference on Instrumentation, Communications … , 2013
    2013
    Citations: 7
  • Dynamic tunnel switching using network functions visualization for HA system failover
    HD Septama, A Ulvan, GF Nama, M Ulvan, R Bestak
    2015 International Conference on Science in Information Technology (ICSITech … , 2015
    2015
    Citations: 6
  • Analisa unjuk kerja mobile based tranceiver station untuk kestabilan infrastruktur sistem komunikasi seluler
    M Melvi, A Ulvan, R Fernando
    Jurnal Rekayasa Elektrika 11 (1), 1-7 , 2014
    2014
    Citations: 6
  • High available VoIP server failover mechanism in wide area network
    HD Septama, A Ulvan, J Hlavacek, R Bestak
    TELKOMNIKA (Telecommunication Computing Electronics and Control) 13 (2), 739-744 , 2015
    2015
    Citations: 5
  • The study of IMS functionality in femtocell environment
    M Ulvan, R Bestak, A Ulvan
    2009 IEEE 9th Malaysia International Conference on Communications (MICC … , 2009
    2009
    Citations: 5
  • IEEE802. 16 MAC management messages: The overhead and efficiency analysis in mesh topology
    A Ulvan, M Ulvan, R Bestak
    2009 IEEE 9th Malaysia International Conference on Communications (MICC … , 2009
    2009
    Citations: 5
  • Using the Relative Thresholds in Handover Procedure
    A Ulvan, Z Becvar, J Zelenka, R Bestak
    IEEE 802.16 Broadband Wireless Access Working Group Project, IEEE C802. 16j … , 2006
    2006
    Citations: 5
  • Pengembangan Canti sebagai Desa Wisata Pesisir Tangguh Bencana Berbasis pada Kearifan Lokal
    M Melvi, MA Muda, YRS Akbar, Y Wahidy, A Ulvan
    Jurnal Nusantara Mengabdi 4 (1), 1-9 , 2024
    2024
    Citations: 4
  • Analisis Rancangan Antena Telemetri Jenis Dipole Pada Unmanned Aerial Vehicle (UAV)
    M Melvi, CA Shevia, Y Yuniati, MAM Batubara, A Ulvan, A Aryanto
    Jurnal Teknologi Riset Terapan 1 (2), 81-89 , 2023
    2023
    Citations: 4
  • Perancangan Antena Helix Frekuensi 433 MHz Pita Lebar
    M Melvi, F Lestari, A Ulvan, A Aryanto, MAM Batubara
    Jurnal Teknologi Riset Terapan 1 (2), 91-106 , 2023
    2023
    Citations: 4
  • Perancangan Antena Yagi Gain Tinggi pada Ground Control Station Wahana Udara Nirawak
    M Ulvan, Y Yuniati, A Aryanto, A Ulvan
    Jurnal Rekayasa Elektrika 16 (3), 191-197 , 2020
    2020
    Citations: 4
  • Signal analysis of remote control (RC) UAV used software defined radio (SDR) HackRF One
    Y Yuniati, A Ulvan, S Nur Fitriani
    Query: Journal of Information Systems 3 (01), 62-68 , 2019
    2019
    Citations: 4