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Herry Setiawan
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International Journal of Wireless And Multimedia Communications
Published by Politeknik Negeri Padang
ISSN : -     EISSN : 20472172     DOI : -
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering
Focus and Scope Jurnal Focus jowim journal focuses on wireless communication technology and its development The journal scopes include (but not limited to) the followings: Telecommunication Theory Internet Of Things Wireless Sensor Network Signal And Image Processing Wireless Communication Optical Fiber Communication Telecommunication And Computer Networks Antennas And Transmission Systems Artificial Intelligence Machine Learning
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 34 Documents
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Internet of Things for Monitoring and Controlling Ammonia Gas and Temperature in Chicken Farms Lifwarda, Lifwarda; Mawandri, Azra; Aulia Rahma, Erin; Ahmad Efendi, Rostam
International Journal of Wireless And Multimedia Communications Vol. 2 No. 1 (2025): International Journal of Wireless And Multimedia Communications
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jowim.v2i1.65

Abstract

This research aims to develop a tool to monitor and control temperature and ammonia gas levels in chicken farms. Ammonia gas (NH3) is an indicator of pollution that is harmful to the health of chickens, humans, and the environment. Ideal ammonia levels in cages should not exceed 30 ppm, while the safe threshold for chickens and humans is 25 ppm. High temperatures can increase ammonia levels, thus negatively affecting the health and productivity of broilers. The developed tool uses an MQ135 sensor to detect ammonia gas levels and a DHT22 sensor to measure temperature and humidity. The data obtained will be processed by ESP32 as a microprocessor. The measurement results are displayed on the LCD, and the tool is equipped with a WiFi module to connect it to the internet. A DC fan serves as an automatic control system to keep the temperature and ammonia gas levels within safe limits. Through an application built with MIT App Inventor, users can access real-time temperature data and ammonia gas levels. With this system, it is expected that chicken health and farm productivity can increase, and the risk of pollution due to ammonia gas can be minimized. This research is expected to be a reference for the development of monitoring and control technology in the livestock sector, providing effective solutions for farmers to create a healthier environment for chickens.  
Design and Development of an IoT-Based PDAM Water Bill Monitoring System for Private Homes Wicaksono , Satria; Rizantha, Iqbal
International Journal of Wireless And Multimedia Communications Vol. 2 No. 1 (2025): International Journal of Wireless And Multimedia Communications
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jowim.v2i1.67

Abstract

This project focuses on developing an IoT-based water bill monitoring system for private homes using a NodeMCU ESP8266 microcontroller, a water flow sensor, and cloud integration via ThingSpeak. The system enables real-time monitoring of water usage, allowing users to control and reduce excessive consumption.Testing showed that the water flow sensor operated with high accuracy, despite minor discrepancies. Comparisons between the sensor’s output and actual measured water volumes revealed error rates ranging from 0.75% to 1.80% across different flow rates. The system also accurately calculated water bills using a predefined rate of IDR 7,000 per liter. For example, a water usage of 3 liters resulted in a bill of IDR 21,000, matching the expected amount. The system successfully provided real-time billing through the ThingSpeak platform and a custom mobile app developed with MIT App Inventor. Additionally, the built-in buzzer effectively alerted users when water usage exceeded predefined limits. While the system performed efficiently, occasional network instability affected IoT performance. Future improvements could focus on enhancing sensor accuracy and improving the user interface for better functionality.
Fabrication and Implementation of a Microstrip Antenna for Digital Television Reception at UHF Frequencies Anjali, Putri; Yustini, Yustini; Adila Asril, Aprinal; Maritsyah Putra, Danda
International Journal of Wireless And Multimedia Communications Vol. 2 No. 1 (2025): International Journal of Wireless And Multimedia Communications
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jowim.v2i1.78

Abstract

Television broadcasting has evolved from analog to digital technology, utilizing digital modulation and compression to efficiently transmit video, audio, and data signals. Antennas play a crucial role in this technology, with microstrip antennas being particularly notable for their compact size, ease of fabrication, and suitability for integration with other telecommunications equipment. The fabricated antenna measures 200 x 235 mm. By optimizing the Destructure Patch Element and Defected Ground Structure techniques, along with the addition of an Inset Feed, a wider bandwidth can be achieved, allowing for the reception of more digital television channels. At its working frequency, the fabricated antenna achieved a return loss of -36.8 dB, a bandwidth of 218.46 MHz, and a frequency range of 481.83 MHz to 700.29 MHz. The measured Voltage Standing Wave Ratio (VSWR) was 1.02, with a gain of 2.11 dBi at 538 MHz, 2.12 dBi at 546 MHz, 2.27 dBi at 626 MHz, and 2.3 dBi at 642 MHz. The radiation pattern was omnidirectional. Using a Vector Network Analyzer, the fabricated antenna was measured to have a return loss of -18.37 dB and a VSWR of 1.27. Additionally, digital TV broadcast testing was conducted, successfully receiving a strong and clear signal.
Comparative Analysis of Voice Call Service Quality Between CSFB and VoLTE Technologies Aqrizal, M. Aqsha
International Journal of Wireless And Multimedia Communications Vol. 2 No. 1 (2025): International Journal of Wireless And Multimedia Communications
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jowim.v2i1.81

Abstract

This study examines the performance of voice services using CSFB and VoLTE technologies. The quality of these services is evaluated using Key Performance Indicators (KPIs) from Drive Test results and key Quality of Service (QoS) metrics. Voice service quality is assessed through drive testing with Tems Pocket software. The findings reveal that CSFB technology involves a transition in Radio Access Technology (RAT) from LTE to GSM, whereas VoLTE operates without such transitions. In Indonesia, voice services without data primarily rely on both CSFB and VoLTE. The quality of these services is determined by factors such as RSRP and SINR, which affect the service’s accessibility, retention, and integrity. VoLTE, in particular, outperforms CSFB in terms of better throughput and reduced delay, enhancing overall service integrity.
4G LTE Network Performance for XL Axiata provider in Lolong Belanti Area Abdullah, Abdi; Chandra, Dikky; Zurnawita, Zurnawita; Kurnia Illahi, Dinda
International Journal of Wireless And Multimedia Communications Vol. 2 No. 1 (2025): International Journal of Wireless And Multimedia Communications
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jowim.v2i1.83

Abstract

This measurement aims to analyze the quality of the 4G LTE network and its relationship with the quality of service (QoS) parameters on the performance of TCP/IP provider XL Axiata in Lolong Belanti Village. The measurement results show that the network with the quality category "Good" to "Excellent" has a percentage value of RSRP 97.5%, SINR 75.52%, and Throughput is categorized as good (Good) based on KPI. In comparison, the network with the category "Poor" to "Fair" shows a percentage value of RSRP 2.5% and SINR 24.48%. The measurement also found that RSRP and SINR parameters significantly affect QoS, with increasing RSRP and SINR values associated with increasing Download Bandwidth, Upload Bandwidth, and Throughput. The highest quality was achieved in the "Excellent" SINR category, with a Download Bandwidth of 42.60 Mbps, an Upload Bandwidth of 28.30 Mbps, and a Throughput of 2,543 kbps. However, there was a significant decrease in the "Poor" category, especially in Download Bandwidth and Throughput. Factors such as packet loss, jitter, and delay were also analyzed, with the results showing that the highest packet loss occurred in the "Poor" category. In contrast, jitter and delay dominated the "Poor and Fair" categories. These findings indicate the importance of RSRP and SINR parameters in determining the quality of 4G LTE networks and their impact on user experience.
Evaluating the Quality of 2G and 4G Networks on Telkomsel in Gunung Talang and Danau Kembar Sub-Districts Nissa, Rifatun; Chandra, Dikky; Aulia, Siska; Maharani, Adinda Aliya
International Journal of Wireless And Multimedia Communications Vol. 2 No. 1 (2025): International Journal of Wireless And Multimedia Communications
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jowim.v2i1.84

Abstract

This study aims to evaluate the quality of 2G and 4G networks on Telkomsel operators in Gunung Talang District and Danau Kembar District, Solok Regency, West Sumatra. This research was conducted using the drive test method using TEMS Pocket and TEMS Discovery devices for network data collection and analysis. The 2G network measurements were conducted based on Rx Level and Rx Quality parameters. In contrast, the 4G network was evaluated based on RSRP (Reference Signal Receive Power) and SINR (Signal Interference to Noise Ratio) parameters. The measurement results on the 2G network show that the average Rx Level is at -85.1 dBm, with very poor signal quality reaching 27.14%, while the network quality based on Rx Quality is classified as excellent with an average value of 0.9 dB, which reaches 82.21%. On the 4G network, the average RSRP was -101.7 dBm with a good signal dominance of 30.68%, but the network quality based on SINR was lower, with an average value of 12.3 dB, where 46.98% of the signal was classified as fair. In addition, several bad spot areas were found to be affected by natural obstacles such as hills, cliffs, and tall trees that block the signal. The recommendation from this research is to optimize the nearest site to improve signal quality in these areas, especially to reduce overshooting problems that occur in certain sectors. This research is expected to be a reference for operators in improving network quality in the areas studied
3.5 Ghz Patch Microstrip Antena Design Using Cst Studio Suite 2019 Software Arniz Nagia, Aliyah
International Journal of Wireless And Multimedia Communications Vol. 2 No. 2 (2025): International Journal of Wireless And Multimedia Communications
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jowim.v2i2.60

Abstract

Design, simulation, fabrication, and analysis of 3.5 GHz Microstrip Patch is a microstrip antenna building that has a small size and is simple. In today's era, microstrip patch antennas play an important role and are very useful because they are compact, easy to integrate, and lightweight. Therefore, quite a lot of people use it. This antenna is designed to operate in the frequency range of 3.4-3.6 GHz. This antenna is usually applied to satellite communications, radar communications, military, and smartphones. Microstrip antenna design is done by using three methods, namely simulation, measurement, and fabrication. The simulation method is software from design using CST STUDIO SUITE 2019 software, the measurement method is using Network Analyzer software, and for fabrication method is the result of antenna design done on PCB. From the simulation results of the 3.5 GHz microstrip antenna design using CST STUDIO SUITE 2019, antenna parameters such as Radiation Pattern, VSWR, and Return Loss were obtained. When fabricating, it is recommended that PCB cuts must be equilateral because this affects the measurement results, and when soldering must be careful and careful so that the results at the time of fabrication are not much different from the results during simulation in CST. If an error occurs during fabrication, the fabricated antenna fails due to lack of accuracy and caution in fabrication.
Automatic Monitoring of Soil Conditions For Plants Based On The Internet of Things Evan, Evan Adicandra; Vianda Putri, Aisyah; Bintang Al Ikhlas, Alif
International Journal of Wireless And Multimedia Communications Vol. 2 No. 2 (2025): International Journal of Wireless And Multimedia Communications
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jowim.v2i2.72

Abstract

Abstract—In the current era of digitalization and technological developments, embedded systems have become an important component in various applications, including in the agricultural sector. The Embedded Systems course provides an understanding of the design, development and implementation of efficient and effective integrated systems. One practical application of this knowledge is in the concept of smart farming.Smart farming utilizes embedded system technology to monitor and control various aspects of agriculture automatically and in real-time. By using sensors, microcontrollers and IoT (Internet of Things) devices connected using the ESP32 module
4G LTE Network Quality Comparison Provider Telkomsel and Tri in Pariaman City Pondria, Irvandito; Hamdi, Miftahul; Yuhanef, Afrizal; Chandra, Dikky
International Journal of Wireless And Multimedia Communications Vol. 2 No. 2 (2025): International Journal of Wireless And Multimedia Communications
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jowim.v2i2.86

Abstract

 Along with the development of the current era of globalization, human needs for telecommunications are also increasing, especially in the telecommunications sector. A technology called Long Term Evolution (LTE) was introduced, which is a fourth generation (4G) cellular network technology. LTE is capable of providing data transfer speeds of up to 100 Mbps on the downlink side and 50 Mbps on the uplink side. The growth in the number of telecommunications service users in Pariaman City has caused a decline in network quality, especially 4G LTE technology. Benchmarking (Comparison) of the quality of 4G LTE operator services is carried out by measuring, comparing, and analyzing the network quality (performance) of two 4G LTE operators in Pariaman City. The measurement process uses the drive test method with the G-Net Track Pro application to measure RSRP, RSRQ, SINR and Throughput in Pariaman City. The comparison results were obtained in Pariaman City for Telkomsel operators having network quality parameters RSRP with a percentage of 48.71%, RSRQ with a percentage of 61.11%, SINR with a percentage of 84.25% and Throughput with a percentage of 68.48% while Tri operators have RSRP values with a percentage of 59.74%, RSRQ with a percentage of 50.38%, SINR with a percentage of 85.68% and Throughput with a percentage value of 66.63%. In general, it can be concluded that Tri operators are included in the good category in terms of signal quality and integrity while Telkomsel operators are in the good category in terms of Coverage.
Antenna Multiple Input Multiple Output Four Port Using Methods Stub and Defected Ground Structure for Ultra wide-band Applications Denisa Putri Maharani; Yustini, Yustini
International Journal of Wireless And Multimedia Communications Vol. 2 No. 2 (2025): International Journal of Wireless And Multimedia Communications
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jowim.v2i2.142

Abstract

Abstract— Multiple Input Multiple Output (MIMO) antennas using the Defected Ground Structure technique are able to produce wide bandwidth to meet Ultra Wide-Band (UWB) frequencies. UWB MIMO antennas have the advantages of reducing interference, improving isolation, and optimizing multipaths, thereby expanding coverage and improving signal quality. The challenge in designing MIMO-UWB antennas is to produce low mutual coupling with small antenna dimensions so that they can be used in portable devices. In this final project, the aim is to design a 4x4 UWB MIMO antenna using FR-4 substrate material with a dielectric constant (εr) of 4.3, a loss tangent of 0.035 and a material thickness of 1.6 mm. With dimensions of 45 x 45 x 1.6 ,mm-3. which has an Ultra-Wideband working frequency with a frequency range of 3.1 – 10.6 GHz. The results of the antenna simulation and measurement showed good performance with a simulated antenna operating frequency of 3.1–10.23 GHz, a minimum return loss of -49.85 dB, an isolation of ≤ -20 dB, and a maximum peak gain of 3.3 dBi at the frequency of 10.6 GHz with an omnidirectional radiation pattern. The measurement results show a working frequency of 3.2-10.64 GHz, a minimum return loss of -21.24 dB, and an Isolation of ≤ -20 dB. The designed four-port MIMO antenna parameters result in a simulated ECC and measurement < of 0.02 and a diversity gain of over 9.989, and a TARC of ≤ –10 dB. The measurement and simulation results show a good fit and are within the permissible limits, indicating good performance for UWB communication.    

Page 3 of 4 | Total Record : 34

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