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9th International Conference on Wireless and Telematics, ICWT 2023

作者： Ramadhani, Saenab Wijanto, Heroe Sudjai, Miftadi School of Electrical Engineering Telkom University Graduate Program of Regulation and Management of Telecommunication Bandung Indonesia School of Electrical Engineering Telkom University Regulation and Management of Telecommunication Bandung Indonesia

ISBN: (纸本)9798350305029

Ku-band and Ka-band are frequency bands that are widely used for high throughput satellites, in Indonesia Ku-band have been used in several types of satellite services to support bandwidth limitations in the C-band. For this reason, a comparative study of Ku-band and Ka-band was carried out to ensure that the two frequency bands can be used in Indonesia's tropical climate and further evaluate the existing regulations for the implementation of HTS in Indonesia. The results of this study show that Ku-band and Ka-band can be used for HTS satellites in Indonesia. All communication links tested showed C/N values higher than the minimum requirements of C/N. Although both frequency bands can use in Indonesia, in terms of economy and efficiency, Ka-band is greater than Ku-band, the availability of wide bandwidth makes the throughput produced by Ka-band more than Ku-band. Capacity measurement simulation is also carried out with two frequency reuse schemes where higher throughput is present at 8 spot beams per cluster scheme. The scenario requires at least nine times frequency reuse to cover the entire region of Indonesia with total throughput on Ka-band 123.02 Gbps under normal sky conditions and 55.56 Gbps under rain sky conditions. The regulation review process resulted in suggestions for changes to the bandwidth cost index to be used in setting spectrum prices for the use of HTS. The need for this change is based on the consideration that bandwidth cost index was previously the base price for satellite transponders with a small bandwidth and HTS satellites are sensitive bandwidth technology. © 2023 IEEE.

关键词： Satellites

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Compliance of Non-GSO Satellite with Radio Regulations Regarding to Interference with GSO Earth Stations. Case Study: Starlink and Telkom 3S 8

Compliance of Non-GSO Satellite with Radio Regulations Regar...

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8th International Conference on Information Technology, Information Systems and Electrical engineering, ICITISEE 2024

作者： Hidayati, Rizki Sutyarjoko, Meiditomo Wijanto, Heroe Graduate Program of Regulation and Management of Telecommunication School of Electrical Engineering Telkom University Bandung Indonesia Regulation and Management of Telecommunication School of Electrical Engineering Telkom University Bandung Indonesia The University Center of Excellence for Intelligent Sensing-IoT School of Electrical Engineering Telkom University Bandung Indonesia

ISBN: (纸本)9798350368970

This research aims an analyze of the interference analysis of the implementation of Telkom-3S and Starlink in Indonesia at downlink Ku-band Frequency based on the epfd calculation. This research conducts an analysis of the effect of avoidance angle on the interference caused by non-GSO satellites, it explores a concept concerning a victim GSO earth station. We use TLE to determine the number of Starlink that visible on the antenna ES of Telkom 3S. Based on the results of the calculations using an avoidance angle 0°- 80°, the higher of avoidance angle, the lower level of epfd and we also recognize that the epfd analyzed exceeds the interference limit suggested by ITU-R article 22 and based on the analysis of the epfd calculation using several avoidance angles, we recommend for Starlink to transmit the power level when the avoidance angle at 10° of ES Telkom 3S. © 2024 IEEE.

关键词： Satellite ground stations

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Enhancement of Accuracy For UWB Indoor Positioning Using Support Vector Regression 13

Enhancement of Accuracy For UWB Indoor Positioning Using Sup...

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13th IEEE International Conference on Communication, Networks and Satellite, COMNETSAT 2024

作者： Syathirah, Andi Sitti Munadi, Rendy Hapsari, Gita Indah Telkom University Graduate Program of Regulation and Management of Telecommunication School of Electrical Engineering Jl. Telekomunikasi. 1 Terusan Buahbatu Jawa Barat Bojongsoang Indonesia

ISBN: (纸本)9798350368086

Ultra-Wide Band (UWB) is a wireless technology that utilizes frequencies with a wide bandwidth to provide coverage and positioning with centimeter-level accuracy. This technology has been widely applied in various fields, such as activity recognition, indoor localization, and through-wall radar. One of the main advantages of UWB is its ability to determine the location of objects with an accuracy of up to 10 cm, making it ideal for tracking moving assets in complex and space-sensitive environments. In this study, a UWB-based positioning system uses a minimum of three anchors and one tag to measure the distance between devices. However, some conditions can reduce the measurement accuracy. To overcome this, this study proposes the use of the Support Vector Regression (SVR) algorithm to improve the accuracy of the system's positioning. SVR is a regression method that supports linear and non-linear regression, with the aim of finding the optimal hyperplane that minimizes prediction errors. The results of the study show that UWB combined with SVR can provide significant accuracy, with a Mean Absolute Error (MAE) of 17 cm on the X coordinate and 19 cm on the Y coordinate, and a Mean Squared Error (MSE) of 4 cm on the X coordinate and 5 cm on the Y coordinate in Line of Sight (LOS) conditions which under 20 cm. This confirms that the combination of UWB and SVR is an effective approach in improving the accuracy of indoor positioning. © 2024 IEEE.

关键词： Ultra-wideband (UWB)

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Novel virtual nasal endoscopy system based on computed tomography scans

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Virtual Reality & Intelligent Hardware 2022年第4期4卷 359-379页

作者： Fábio de O.SOUSA Daniel S.da SILVA Tarique da S.CAVALCANTE Edson C.NETO Victor JoséT.GONDIM Ingrid C.NOGUEIRA Auzuir Ripardo de ALEXANDRIA Victor Hugo C.de ALBUQUERQUE Federal Institute of Ceará-IFCE Telecommunication Engineering ProgramBrazil Graduate Program on Teleinformatics Engineering Federal University of CearáFortaleza/CEBrazil Centro Universitário Christus-UniChristus Brazil Centro Universitário Sete de Setembro-Uni7 Brazil

Background Currently,many simulator systems for medical procedures are under *** systems can provide new solutions for training,planning,and testing medical practices,improve performance,and optimize the time of the ***,to achieve the best results,certain premises must be followed and applied to the model under development,such as usability,control,graphics realism,and interactive and dynamic *** This study presents a system for simulating a medical examination procedure in the nasal cavity for training and research purposes,using a patient′s accurate computed tomography(CT)as a *** pathologies that are used as a guide for the development of the system are ***,an overview of current studies covering bench medical mannequins,3D printing,animals,hardware,software,and software that use hardware to boost user interaction,is ***,a comparison with similar state-of-the-art studies is *** The main result of this work is interactive gamification techniques to propose an experience of simulation of an immersive exam by identifying pathologies present in the nasal cavity such as hypertrophy of turbinates,septal deviation adenoid hypertrophy,nasal polyposis,and tumor.

关键词： Virtual nasal endoscopy Computed tomography Gamification Endoscopy teaching

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Design and Strategy Deployment of SD-WAN Technology: In Indonesia (Case Study: PT. XYZ)

Design and Strategy Deployment of SD-WAN Technology: In Indo...

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2021 International Conference on Green Energy, Computing and Sustainable Technology, GECOST 2021

作者： Pratiwi, Wiwi Gunawan, Dadang Universitas Indonesia Graduate Program of Telecommunication Management Department of Electrical Engineering Jakarta Indonesia

ISBN: (纸本)9781665438650

For large companies with branch offices spread across various regions, it is not enough to rely on traditional wide area network (WAN) technology to connect networks between data centers, head offices, and branch offices that are far apart. This is because traditional WAN operation requires many devices with their own complexities. SDN is a method that separates the Control Plane and the Forwarding Plane. In a traditional network, the two functions above are in the same device. One of the SDN technologies on the network is SD-WAN. Another problem in traditional network is WAN infrastructure primarily uses MPLS, which can be very expensive and has limited bandwidth. With the increasing volume of data, MPLS costs can be quite high the expensive cost. PT. XYZ as a banking company that has branches scattered everywhere must pay attention to this. This paper proposes the suitable design and implementation scenario of SD-WAN technology at PT. XYZ so that the existing network can be integrated. From the proposed design, it can be shown that SD-WAN technology is able to answer the weaknesses of traditional WANs in terms of ease of monitoring, cost efficiency, and flexibility © 2021 IEEE.

关键词： Wide area networks

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Soil Water Content Estimation over Plantation Area Using FMCW Radar

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Progress In Electromagnetics Research B 2023年 101卷 155-173页

作者： Ridhia, Fildha Pramudita, Aloysius Adya Suratman, Fiky Y. Graduate Program of Electrical Engineering Department Telkom University Indonesia Telecommunication Engineering Department Telkom University Indonesia Electrical Engineering Department Telkom University Indonesia

In plantation areas, soil conditions affect the crop's quality. One of the crucial elements in the soil for plant survival is soil water content (SWC). Radar system has advantages that can be implemented for measuring SWC in plantation areas. A radar system operates by utilizing electromagnetic waves to obtain the dielectric characteristics of the soil. However, the presence of tea plants has become an obstacle to the radar wave propagation toward the soil layer. Re ected signal, which is in uenced by the presence of vegetation, makes the estimation of SWC inaccurate. Consequently, the estimation of SWC needs to consider the vegetation's effect. This study uses an FMCW radar system, which operates at a frequency of 24 GHz. A layer medium propagation model is proposed in this study to prove the relationship between the re ected signal and the SWC. The re ection coefficient extracted from the radar signal is used to estimate the SWC. The vegetation propagation constant was obtained from the average field measurement results. The gravimetric method is used to validate the SWC estimation in vegetation's presence using the radar system. The results of the field experiments showed that the proposed method succeeded in estimating the SWC by considering the presence of vegetation with an average error of 3.57%. The proposed method has the potential to be applied to plantation areas. © 2023, Progress In Electromagnetics Research B. All Rights Reserved.

关键词： Vegetation

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Frequency Band Analysis and Spectrum Pricing for High Throughput Satellite in Indonesia

Frequency Band Analysis and Spectrum Pricing for High Throug...

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International Conference on Wireless and Telematics (ICWT)

作者： Saenab Ramadhani Heroe Wijanto Miftadi Sudjai Graduate Program of Regulation and Management of Telecommunication School of Electrical Engineering Telkom University Bandung Indonesia Regulation and Management of Telecommunication School of Electrical Engineering Telkom University Bandung Indonesia

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Enhancement of Accuracy For UWB Indoor Positioning Using Support Vector Regression

Enhancement of Accuracy For UWB Indoor Positioning Using Sup...

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IEEE International Conference on Communication, Networks and Satellite (ComNetSat)

作者： Andi Sitti Syathirah Rendy Munadi Gita Indah Hapsari Graduate Program of Regulation and Management of Telecommunication School of Electrical Engineering Jl. Telekomunikasi. 1 Terusan Buahbatu - Bojongsoang Telkom University Jawa Barat

ISBN: (数字)9798350368086

ISBN: (纸本)9798350368093

Ultra-Wide Band (UWB) is a wireless technology that utilizes frequencies with a wide bandwidth to provide coverage and positioning with centimeter-level accuracy. This technology has been widely applied in various fields, such as activity recognition, indoor localization, and through-wall radar. One of the main advantages of UWB is its ability to determine the location of objects with an accuracy of up to 10 cm, making it ideal for tracking moving assets in complex and space-sensitive environments. In this study, a UWB-based positioning system uses a minimum of three anchors and one tag to measure the distance between devices. However, some conditions can reduce the measurement accuracy. To overcome this, this study proposes the use of the Support Vector Regression (SVR) algorithm to improve the accuracy of the system’s positioning. SVR is a regression method that supports linear and non-linear regression, with the aim of finding the optimal hyperplane that minimizes prediction errors. The results of the study show that UWB combined with SVR can provide significant accuracy, with a Mean Absolute Error (MAE) of $\mathbf{1 7} \mathbf{~ c m}$ on the X coordinate and 19 cm on the Y coordinate, and a Mean Squared Error (MSE) of 4 cm on the X coordinate and 5 cm on the Y coordinate in Line of Sight (LOS) conditions which under 20 cm. This confirms that the combination of UWB and SVR is an effective approach in improving the accuracy of indoor positioning.

关键词： Support vector machines Wireless communication Accuracy Satellites Measurement uncertainty Position measurement Size measurement Radar tracking Vectors Radiofrequency identification

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USASAT-NGSO-3X Filing Analysis Using ITU-BR GIBC Software For Various Orbital Shells

USASAT-NGSO-3X Filing Analysis Using ITU-BR GIBC Software Fo...

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IEEE Asia-Pacific Conference on Geoscience, Electronics and Remote Sensing Technology (AGERS)

作者： Fika Triana Meiditomo Sutyarjoko Heroe Wijanto Graduate Program of Regulation and Management of Telecommunication School of Eletrical Engineering Telkom University Bandung Indonesia Regulation and Management of Telecommunication School of Electrical Engineering Telkom University Bandung Indonesia The University Center of Excellence for Intelligent Sensing-IoT School of Electrical Engineering Telkom University Bandung Indonesia

ISBN: (数字)9798331543105

ISBN: (纸本)9798331543112

Interference is a significant problem in satellite communication operations, one of which is between Non-Geostationary Orbit (non-GSO) satellites and Geostationary Orbit (GSO) ground stations. To calculate the impact of this interference, an evaluation of the EPFD (Equivalent Power Flux Density) is carried out, which describes the average power density of the signal received at the receiving station location. This study conducted an in-depth study of the level of interference by signals from the USASAT NGSO-3X satellite in various orbital shells that affect the GSO system. By using the worst-case geometry method, the EPFD calculation can provide valuable insight into the level of interference that occurs. Based on the results of the study, it was concluded that a more in-depth study of the ITU-BR GIBC software algorithm was needed regarding the analysis of EPFD values using the worst-case geometry method. GIBC simulations show inconsistencies in the EPFD values correlated with the values set in Article 22 ITU-R and S.1503-2 ITU-R, both through aggregate and separate orbit examinations, so that a review of the ITU-R S.1503-2 algorithm is needed to ensure that interference between non-GSO satellites and GSO earth stations remains under control within the specified limits.

关键词： Space vehicles Geometry Earth Satellites Aggregates Space technology Software algorithms Interference Orbits Software

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Compliance of Non-GSO Satellite with Radio Regulations Regarding to Interference with GSO Earth Stations. Case Study: Starlink and Telkom 3S

Compliance of Non-GSO Satellite with Radio Regulations Regar...

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International Conference on Information Technology, Information Systems and Electrical engineering (ICITISEE)

作者： Rizki Hidayati Meiditomo Sutyarjoko Heroe Wijanto Graduate Program of Regulation and Management of Telecommunication School of Electrical Engineering Telkom University Bandung Indonesia Regulation and Management of Telecommunication School of Electrical Engineering Telkom University Bandung Indonesia The University Center of Excellence for Intelligent Sensing-IoT School of Electrical Engineering Telkom University Bandung Indonesia

ISBN: (数字)9798350368970

ISBN: (纸本)9798350368987

关键词： Earth Electrical engineering Satellite broadcasting Urban areas Interference Downlink Regulation Uplink Information technology Information systems

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