Article Per Year (5 Year)
p-Index From 2021 - 2026
1.836
P-Index
This Author published in this journals
All Journal Techno.Com: Jurnal Teknologi Informasi Jurnal Simetris Jurnal Teknologi Informasi dan Ilmu Komputer Prosiding 2nd Seminar Nasional IPTEK Terapan (SENIT) 2017 Jurnal Teknologi dan Sistem Komputer Jurnal Sisfokom (Sistem Informasi dan Komputer) Jurnal Telematika Journal of Robotics and Control (JRC) Best Journal (Biology Education, Sains and Technology) Society: Jurnal Pengabdian Masyarakat Jurnal Nasional Teknik Elektro dan Teknologi Informasi Jurnal INFOTEL Buletin Pos dan Telekomunikasi
Dodi Zulherman
Institut Teknologi Telkom
Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Public Health Social Sciences

Published : 20 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 7 Documents
Search
Journal : Jurnal INFOTEL

 1 
Analisis Unjuk Kerja Rancangan Jaringan Fiber To The Home Area Jakarta Garden City dengan Metode Eye-Diagram Dodi Zulherman; Fahrudin Rosanto; Fauza Khair
JURNAL INFOTEL Vol 9 No 3 (2017): August 2017
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v9i3.238

Abstract

Dalam tulisan ini, kami merancang jaringan akses fiber to the home berbasis gigabit passive optical network (FTTH-GPON) pada area Jakarta Garden City. Pemodelan rancangan menggunakan GoogleEarth dan OptiSystem. Rancangan yang kami usulkan menggunakan kecepatan downstream 2,4 Gbps dan upstream 1,2Gbps. Kami mengamati kesesuaian unjuk kerja rancangan terhadap standar FTTH-GPON yang dikeluarkan oleh ITU-T. Kami menggunakan metode perhitungan link power budget dan risetime budget dalam perancangan jaringan FTTH. Berdasarkan hasil pengamatan didapatkan link budget sebesar 22 dB dengan margin daya sebesar 3 dB, risetime budgetd downstream sebesar 0,27 ns, dan risetime upstream sebesar 0,25 ns. Pengukuran unjuk kerja rancangan menggunakan metode eye-diagram yang menampilkan jitter, distorsi, signal-to-noise ratio (SNR), nilai Q-factor dan nilai BER. Pengukuran unjuk kerja dengan menggunakan power masukan 5 dBm dan panjang gelombang 1490 nm menghasilkan jitter sebesar 16,7 ps, distorsi sebesar 1,07µ a.u., SNR sebesar 6,87, Q Factor sebesar 21,249 dan BER sebesar 1,9 x 10-99. Berdasarkan hasil pengamatan dan analisis terhadap hasil tersebut, rancangan jaringan FTTH pada area Jakarta Garden City yang kami usulkan telah memenuhi standar ITU-T untuk penggunaan layanan internet kecepatan tinggi.
Performance Comparison of Dispersion Compensation Schemes Using DCF in DWDM Optical Network Fauza Khair; Dodi Zulherman; Fahmi Fahmi
JURNAL INFOTEL Vol 10 No 2 (2018): May 2018
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v10i2.362

Abstract

The dense wavelength division multiplexing (DWDM) system enhances bandwidth capacity for long-haul communications system, but the system performance is affected by a chromatic dispersion especially in the high bitrate communication caused by different refractive index in pulse propagation for optical link. Using the Dispersion compensating fiber (DCF) can compensate for the positive dispersion in the optical link because it has negative dispersion value and can reduce the effect of the chromatic dispersion. We look for the suitable DCF scheme in our DWDM System using 16 channels with bitrate 40 Gbps per channel, channel spacing 200 GHz and optical link length 300 km and discuss the system performance to compensate dispersion in DWDM systems with the optical launch power variation. Based on the result, the system with the symmetrical scheme with optical power launch had the best performance with BER 8.33 × 10-86 and Q-factor 19.572. Optical power launch had the effect to the system performance, the optical power launch 0 dBm in the all DCF scheme was not meet with ITU-T standard for optical link. In sequentially Q-factor of the pre-compensating, post compensating, and symmetrical compensating fiber schemes is 6.007, 6.209, and 6.608 which are not meet the ITU-T standard that Q-factor has to more than 7.20. The increasing optical power launch improved the system performance for all DCF scheme. In sequentially Q-factor of the symmetrical scheme with input power 0 dBm, 2 dBm, 4 dBm, 6 dBm, 8 dBm, and 10 dBm is 6.680, 8.510, 10.724. 13.340, 16.319, 19.572. This work obtains that the system with symmetrical compensating fiber more suitable than pre-compensating fiber and post-compensating fiber and the system with high optical launch power has better performance than low power.
Comparative Analysis of Erbium Doped Fiber Amplifier (EDFA) and Raman Optical Amplifier (ROA) in Nonlinear-CWDM System Dodi Zulherman; Fahmi Fahmi; Sri Utami; Tri Heru Santoso; Satria Adi Nugroho
JURNAL INFOTEL Vol 10 No 3 (2018): August 2018
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v10i3.378

Abstract

The massive demands for high-rate application drove the telecommunication service to use large bandwidth capacity. The Coarse Wavelength Division Multiplexing (CWDM), common use in Metro-WDM, can be a solution to provide large bandwidth in optical communications. In a communications system, there are attenuation and nonlinear effect decreasing the system performance. To overcome the limitation imposed by electrical regeneration to maintain system performance, a means of optical amplification was sought. In this paper presents the comparison of two competing technologies emerged: Erbium Doped Fiber Amplifier (EDFA) and Raman Optical Amplifier (ROA) to overcome the attenuation in the nonlinear system. We designed the CWDM system using 8 channels with 20 nm channel spacing and 60 km length. The result was conducted by varying the optical power launch using -8, -6, -4, -2, 0, 2, 4, and 6 dBm. Based on the result of the research, Raman amplification can maintain the BER and the Q-factor that meet the ITU-T standard for all optical power launch value, but EDFA can maintain those for optical power launch more than 0 dBm. In addition, the received power in Raman amplification larger than that received in EDFA. In conclusion, a CWDM system using ROA amplifier prefer to use for the system than using the EDFA amplifier.
Optimation Free Space Optic (FSO) Design with Kim Model Using Space Diversity Triyono Subekti; Anggun Fitrian Isnawati; Dodi Zulherman
JURNAL INFOTEL Vol 11 No 3 (2019): August 2019
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v11i3.444

Abstract

The development of communication services in remote rural areas is difficult to use cable-based systems such as Digital Subscriber Line (DSL) and FTTx. One solution to solve this problem is to use a wireless system such as radio communication. Free Space Optic (FSO) communication system is a better choice compared to radio communication because of the flexibility of frequency usage. One of the problems of the FSO communication system is the range not too far. The range of the FSO can be increased by using the space diversity method. This study compared FSO systems that not use space diversity and FSO systems that use space diversity in three weather conditions, namely clear, haze, and fog. In taking data results using Kim model propagation with variations in the range between 100 – 2000 meters. The modulation used in this study is external modulation. The result of the analysis of FSO performance after adding space diversity, the range of FSO increases as far as 1200 meters when the condition is clear. During the haze condition, the FSO range increase as far as 800 meters. During the fog condition, the FSO range has increased as far as 300 meters. By adding space diversity, the Q-factor value has increased, and BER (Bit Error Rate) has decreased.
Performance Analysis of Fetal-Phonocardiogram Signal Denoising Using The Discrete Wavelet Transform Ipam Fuadina; Jans Hendry; Dodi Zulherman
JURNAL INFOTEL Vol 11 No 4 (2019): November 2019
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v11i4.458

Abstract

The obligation for comprehensive fetal heart rate investigation had driven to improve the passive and non-invasive diagnostic instruments despite the USG or CTG method. Fetal phonocardiography (f-PCG) utilizing the auscultation method met the above criteria, but its interpretation frequently disturbed by the presence of noise. For instance, maternal heart and body organ sounds, fetal movements noise, and ambient noise from the environment where it is recording are the noise that corrupted the f-PCG signal. In this work, the use of discrete wavelet transforms (DWT) to eliminate noise in the f-PCG signal with SNR as the performance parameters observed. It was observing the effect of changes in wavelet type and threshold type on the SNR value. The test was carried out on f-PCG data taken from physio.net. Initial SNR values ranged from -26.7 dB to -4.4 dB; after application of DWT procedure to f-PCG, SNR increased significantly. Based on the test results obtained, wavelet type coif1 with the soft threshold gave the best result with 11.69 dB in SNR value. The coif1 had a superior result than other mother wavelets that use in this work, so the fPCG signal analysis for fetal heart rate investigation suggested to use it.
Software-based simulation to analyze the variation of digital modulation and atmospheric condition on the free space optic (FSO) link performance Fauza Khair; Dodi Zulherman; Rifani Auliana
JURNAL INFOTEL Vol 14 No 3 (2022): August 2022
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v14i3.758

Abstract

Free Space Optic (FSO) is the solution for telecommunications technology that offers high data rates, wide bandwidth, and low power consumption. However, to maximize the performance of the FSO system, the modulation used should be considered in environmental conditions. This study aims to compare the performance of the FSO communication link based on digital modulation variations used in various weather conditions, including sunny, rainy, and foggy weather. This study uses two attenuation models, namely the Kim and Kruse models, with variations in transmission distance from 500 meters to 10 kilometers. Modulation variations used include QPSK, 8-PSK, 16-PSK, and 16-QAM at 10 Gbps bitrate. The simulation is accomplished using OptiSystem 17.0 software. The study results show that sunny weather (very clear) has the best visibility compared to rain and fog conditions with an attenuation value of 0.46 dB/km on the Kim and Kruse models. QPSK modulation has the best performance with a BER value of less than 1x10-12 up to a transmission distance of 8 km in sunny weather, 3 km in rainy weather (medium rain), and 800 m in foggy (moderate fog) weather. The 8-PSK modulation has a BER value of less than 1x10-12 with a range of 2000 m in sunny weather and 1500 m in rainy weather but does not meet the standards in foggy weather conditions. 16-PSK and 16-QAM modulation have above baseline BER values ​​during rainy and foggy conditions, but 16-QAM modulation still has a BER value of less than 1x10-3 during foggy conditions at a distance of 500 m.
Pendeteksi dini dan penjejak kendaraan yang datang dari jarak jauh dengan pendeteksi referensi titik hilang untuk lampu lalu lintas adaptif Yoanda Alim Syahbana; Dodi Zulherman; Yokota Yasunari
JURNAL INFOTEL Vol 15 No 2 (2023): May 2023
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v15i2.890

Abstract

Real-time traffic monitoring is essential for the operation of an adaptive traffic lighting system and plays a significant role in decision-making, particularly signaling in roadworks. When only one lane is accessible due to temporary road blockage, early detection of oncoming vehicles is crucial to minimize bottlenecks near the traffic light that could result in congestion and accidents. This research aimed to enhance the detection and tracking of traffic at a distance from the traffic light. We utilized the vanishing point as a reference for detection and calculated the region of interest. We implemented the proposed method on twelve traffic surveillance videos and evaluated the system performance based on how quickly it could detect incoming traffic compared with the R-CNN method. The proposed method detected target vehicles in an average of 17.75 frames, while the R-CNN method required an average of 63.36 frames. Moreover, the proposed method’s precision depends on the number of pixel orientations used to estimate the vanishing point and the definition of the region of interest. Therefore, the proposed method for enhancing the safety and reliability of an adaptive traffic light system is reliable.
Co-Authors Aditya Rachman Amal, Muhammad Alwi Adnan Amalia Beladinna Arifa Andriani, Rizki Anggun Fitrian Isnawati Bongga Arif Widodo Fahmi Fahmi Fahmi Fahmi Fahrudin Rosanto Fahrudin Rosanto Fahrudin Rosanto, Fahrudin Faqih Amatya Hendrayan Fauza Khair Firdaus, Hardiansyah Fuadina, Ipam Hendry, Jans Ipam Fuaddina Adam Ipam Fuadina Ipam Fuadina Adam Jans Hendry Nasution, Nurromsyah Nurromsyah Nasution Olivian Bagas Pratama Rahmat Widadi Rifani Auliana Rina Mardiati, Rina Rosita, Erlia Santoso, Tri Heru satria adi nugroho Satria Adi Nugroho Setiawan, Aan Eko Sidiq, Muhammad Fajar Sri Utami Sri Utami Subekti, Triyono Synatria Subekti Tri Heru Santoso Trihastuti Yuniati Triyono Subekti Yoanda Alim Syahbana Yokota Yasunari