Article Per Year (5 Year)
p-Index From 2021 - 2026
4.683
P-Index
This Author published in this journals
All Journal POSITRON TELKOMNIKA (Telecommunication Computing Electronics and Control) Journal of ICT Research and Applications ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika JETT (Jurnal Elektro dan Telekomunikasi Terapan) TEKTRIKA - Jurnal Penelitian dan Pengembangan Telekomunikasi, Kendali, Komputer, Elektrik, dan Elektronika IJAIT (International Journal of Applied Information Technology) JMECS (Journal of Measurements, Electronics, Communications, and Systems) Charity : Jurnal Pengabdian Masyarakat Prosiding Konferensi Nasional PKM-CSR eProceedings of Engineering Eduvest - Journal of Universal Studies Jurnal INFOTEL Buletin Pos dan Telekomunikasi
Rina Pudji Astuti
Universitas Telkom
Aerospace Engineering Arts Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Neuroscience Nursing Physics Public Health Social Sciences

Published : 68 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search
Journal : Jurnal INFOTEL

 1 
Analisis Penerapan Teknik AMC dan AMS Untuk Peningkatan Kapasitas Kanal Sistem MIMO-SOFDMA Nur Andini; Rina Pudji Astuti; A. Ali Muayyadi
JURNAL INFOTEL Vol 9 No 2 (2017): May 2017
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v9i2.186

Abstract

Kapasitas kanal adalah parameter penting sistem komunikasi nirkabel. Suatu sistem komunikasi diharapkan mampu menyediakan kapasitas kanal yang tinggi. Sistem dengan Multipe Input Multiple Output (MIMO) antenna mampu menyediakan kapasitas kanal yang tinggi. Pada penelitian ini, kinerja sistem MIMO diamati dengan penerapan Scalable Orthogonal Frequency Division Multiple Access (SOFDMA). Teknik Adaptive Modulation and Coding (AMC) serta Adaptive MIMO Switching (AMS) juga diterapkan pada sistem ini. Jumlah subcarrier yang digunakan dalam SOFDMA tersebut yaitu 128 dan 2048. Kinerja sistem yang diamati yaitu kapasitas kanal dengan variasi kecepatan pengguna. Variasi pergerakan pengguna meliputi 0 km/jam dan 120 km/jam. Kapasitas kanal sistem dengan kombinasi teknik AMC dan AMS dapat mencapai 419,5115 Mbps saat kecepatan pengguna sebesar 0 km/jam. Saat kecepatan pengguna sebesar 120 km/jam, kapasitas kanal sistem dapat mencapai 23,9820 Mbps
Optimum polarization configuration of planar circular patch MIMO antenna Rina Pudji Astuti; Eva Lucky Wijaya; Trasma Yunita; Harfan Hian Ryanu
JURNAL INFOTEL Vol 14 No 1 (2022): February 2022
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v14i1.748

Abstract

Multiple Input Multiple Output (MIMO) is a key technology that plays an important role in achieving the 5G requirement due to its capability to increase channel capacity. However, the increase of channel capacity is influenced by several aspects such as mutual coupling. Many methods are done to decrease the mutual coupling effect such as polarization arrangement of the MIMO antennas. This study on the polarization arrangement of a circular patch MIMO antenna at 3.5 GHz was performed. Four elements of the MIMO antenna are arranged with several polarization configurations both in Co-Polarization and Cross-Polarization. Both simulation and measurement results showed that MIMO with Co-Polarization has a slightly wider bandwidth equal to 295.25 MHz compared to Cross-Polarization with a bandwidth of 274.63 MHz, due to better return loss performed by the former. However, from the mutual coupling perspective, it is observed that MIMO with Cross-Polarization can reduce the mutual coupling from -17.6676dB into -22.462 dB compared to Co-Polarization with the same element distance.
Vegetation classification algorithm using convolutional neural network ResNet50 for vegetation mapping in Bandung district area Rina Pudji Astuti; Ema Rachmawati; Edwar Edwar; Simon Siregar; Indra Lukmana Sardi; Arfianto Fahmi; Yayan Agustian; Agus Cahya Ananda Yoga Putra; Faishal Daffa
JURNAL INFOTEL Vol 14 No 2 (2022): May 2022
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v14i2.756

Abstract

Bandung District is one of crop provider for West Java Province. About 31.158,22 ha is used for crop. However, some of them are not maintained well due to lack of vegetation map information. Local authority has tried to map the vegetation in their area by using free license satellite images, and aerial images from Unmanned Aerial Vehicle (UAV). Despite both images being able to provide large plantation area images, both are unable to classify the vegetation type in those images. Telkom University with Bandung Agriculture Regional Office (Dinas Pertanian Kabupaten Bandung) has conducted joint research to develop algorithm based on 50-layer residual neural network (ResNet50) to classify the vegetation type. The input is of this algorithm is primarily aerial images are captured from different type, height, and position of crops. Seven different ResNet50 configurations have been set and simulated to classify the crop images. The result is the configuration with resized images, employing triangular policy of cyclic learning rate with rate 1.10−7 – 1.10−4 comes out as the best setup with more than 95% accuracy and relatively low loss.
Bahasa Inggirs Salwa Salsabila; Rina Pudjiastuti; Levy Olivia Nur; Harfan Hian Ryanu; Bambang Setia Nugroho
JURNAL INFOTEL Vol 15 No 3 (2023): August 2023
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v15i3.962

Abstract

Massive MIMO Antenna Design results in a very large antenna size that hinders the design process. The arrangement of Massive MIMO Antennas which consists of many antenna elements is a challenge in the design process due to the limited capability of the simulation software and the complicated process. Thus, a scalability technique is used to predict the specification results produced by a Massive MIMO Antenna array with a certain configuration based on a simple MIMO Antenna array with a 2x2, 4x4, 8x8, 16x16 MIMO element configuration scheme, etc. exponential increments. This research will discuss the scaling process to predict the specifications of a Massive MIMO Antenna array. The designed MIMO antenna arrangement is based on the design of a rectangular antenna with a truncated corner and a circular antenna with an X slot for further design with various types of configurations that work at a frequency of 3.5 GHz.
Bandwith and Gain Enhanced Hexagonal Patch Antenna Using Hexagonal Shape SRR Ryanu, Harfan Hian; Hafizha, Syahna; Maulani, Azka; Pramudita, Aloysius Adya; Nugroho, Bambang Setia; Nur, Levy Olivia; Astuti, Rina Pudji; Dwiyanto, Dwiyanto
JURNAL INFOTEL Vol 16 No 2 (2024): May 2024
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v16i2.1118

Abstract

In the evolving digital era, the primary focus of the telecommunications industry is on the 5G network, expected to deliver high data rates, low latency, large network capacity, and improved connectivity. This article discusses efforts to adopt optimal frequencies for 5G, introducing techniques to enhance the characteristics of microstrip antennas using Double Negative (DNG) metamaterial properties. The hexagonal-shaped Split Ring Resonant (HSRR) metamaterial is considered a potential method to increase the bandwidth and gain of 5G antennas. Simulation of HSRR unit cells shows a positive impact on DNG characteristics. Meanwhile, the antenna design incorporating HSRR superstrate elements significantly increases gain to 4.47 dBi, and the implementation of HSRR structures on the groundplane results in a remarkable 368% increase in bandwidth compared to conventional antennas without metamaterial.
Co-Authors A. Ali Muayyadi A. Ali Muayyadi Adit Kurniawan Adnan Adzhani Afief Dias Pambudi Agus Cahya Ananda Yoga Putra Agus Pratondo Ahmad Ardianto Ahmad Hambali, Ahmad Aldo Alessandro Tukat Alfrina Dyah Purnamasari Ali Muayyadi Aloysius Adya Pramudita Anastasia Clara Andriyan B. Suksmono Annisa , Nurul Arfianto Fahmi Argymnasthiar Ramadhana Balthazar Isra Bambang Setia Nugroh Bambang Setia Nugroho Bayu Aziz Jayawardana Bhaskara Narottama Brian Pamukti Budi Prasetya Budi Prasetya Budi Syihabuddin Citra Dewi Anggraeni Dadang Gunawan Denny Darlis Desti Madya Saputri Dharu Arseno DHONI PUTRA SETIAWAN Dwiyanto Dwiyanto, Dwiyanto Dziqru Akbar Edwar EDWAR EDWAR Ema Rachmawati Emerson Gabariel Ambarita Endah Setyowati Erna Sri Sugesti Ersyach Irham Sunny Eva Lucky Wijaya Evander Christy Fabrianto, Muhammad Nahlidzan Fadhilah, Hana Faishal Daffa Fitri Imansyah Furry Rachmawati Gasi Dhias Hafizha, Syahna Harfan Hian Ryanu Herlina, Lisye Hurianti Vidyaningtyas Indra Lukmana Sardi Inung Wijayanto Jamal, Muh. Arham Joses Steven Tarigan Kevin, Raymondus Khoirul Anwar Kurniadi, Akhdan Kurniawan Nur Ramdhani Kusuma, Muhamad Mardanu Kusumawardhani, Eka Levy Olivia Nur Linda Meylani Luh Putu Ayu Sri Aryaningrum Lurina, Manda Manda Lurina Masna, Haris Azmil Maulani, Azka Mausoof, Aldwin Lutffattan Miftadi Sudjai Muhamad Asvial Muhamad Mardanu Kusuma Muhammad Yaser Nabila Amalia Azzahra Nachwan Mufti Adriansyah Nanda Aldira Fakhri Ni'Matul 'Abdah Adhiya Fakhriy Nia Soniyanti Nina Karlina Nur Andini Obed Rhesa Ludwiniananda Pakpahan, Yolanda Jessica Patricius Evander Christy Predarico, Boby Putra, Leonardus Sandy Ade Rachfaizi , Rendhy Raihan Santoso Rayhan Nauvaldi Rheza Rivaldi Hi Hukum Rifky, Muhammad Rizal, Mochammad Fahru Rizky Lazardy Sina Rizwan Jufri Nst Saddam Nusantara Sukoco Salwa Salsabila Sandria Abhiseka Simon Siregar Siren Seven Sugihartono Sugihartono Sugondo Hadiyoso Sutari, Wiyono Syahfwan A , Andi Muh Tomy Irawan Uke Kurniawan Usman Wicaksono, Andika Budi Yaumil Chairiani Yayan Agustian Yoga Julian Yoga Sukma Mahendra Yudi Tri Jayadi YUNITA, TRASMA Yusuf Sugiyarto Yuwono , Fadly Bimo Eka YUYUN SITI ROHMAH