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All Journal Jurnal SPEKTRUM Jurnal Nasional Pendidikan Teknik Informatika (JANAPATI) Electron: Jurnal Ilmiah Teknik Elektro Scientific Journal of Informatics Jurnal SPEKTRUM
Ngurah Indra ER
Department Of Electrical Engineering, Udayana University
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering

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ANALISIS JARINGAN UMTS PADA MENARA ROOFTOP DENGAN MENGGUNAKAN SOFTWARE TEMS INVESTIGATION DAN G-NETTRACK PRO Pande Putu Wahyu Pramanda; Pande Ketut Sudiarta; Ngurah Indra ER.
Jurnal SPEKTRUM Vol 3 No 1 (2016): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (325.033 KB)

Abstract

Berkembangnya dunia teknologi telekomunikasi dan informasi sejalan dengan kebutuhan akan kecepatan dan kestabilan akses internet teknologi UMTS. Metode drive test adalah metode yang biasanya digunakan untuk pengukuran kualitas sebuah site. Pihak provider umumnya menggunakan software TEMS Investigation dalam melakukan drive test. Melakukan drive test dengan TEMS Investigation sangatlah tidak praktis dan memerlukan biaya yang besar. Berkembangnya teknologi smartphone membuat drive test dapat dilakukan dengan menggunakan handphone yaitu dengan G-NetTrack Pro. Namun G-NetTrack Pro tidak memiliki kemampuan yang sama dengan TEMS Investigation. Software G-NetTrack Pro dapat digunakan sebagai bahan pembelajaran yaitu untuk pengenalan drivetest namun belum cocok digunakan secara profesional. G-NetTrack Pro dapat menampilkan data yang dibutuhkan dalam drive test namun tidak sedetail TEMS Investigation, sehingga dalam proses pembelajaran dapat digunakan untuk pengenalan karena efisien dan dapat di install pada handphone mahasiswa namun tidak dapat digunakan melakukan drive test misalnya dalam dunia kerja atau secara professional.
PEMANFAATAN MEDIA SOSIAL SEBAGAI OTENTIFIKASI DAN OTORISASI AKSES KE JARINGAN WIFI IGM.W.S. Handdy; I.G.A.K Diafari; N. Indra
Jurnal SPEKTRUM Vol 3 No 2 (2016): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

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Abstract

Pemanfaatan media sosial sebagai otentifikasi dan otorisasi akses ke jaringan wifi membantu penyedia layanan hotspot untuk mendapatkan data bagi setiap pengunjung yang menggunakan layanan hotspot, setiap data yang didapat akan tersimpan pada server database. Pada penelitian ini, akan menguji system otentifikasi pemanfaatan media sosial untuk mengetahui waktu yang diperlukan dalam proses otentkasi dan otorisasi yang terjadi. Tahap penelitian, penulis melakukan beberapa skenario pengujian, yang bertujuan untuk mengetahui waktu dari setiap proses otentifikasi dan otorisasi dari setiap skenario pengujian, selain itu penulis melakukan pengambilan alur data proses otentifikasi dan otorisasi, sehingga dapat dibandingkan dengan waktu. Skenario yang dipergunakan dalam pengujian diantaranya data yang terdaftar dan data yang tidak terdaftar pada database. Selain itu penulis menggunakan data salah dalam proses pengujian, yang bertujuan untuk mengetahui waktu tunggu jika terjadi kesalahan input data.
SOLUSI ALTERNATIF PENYAMPAIAN INFORMASI DENGAN TOLERANSI WAKTU TUNDA UNTUK PENGGUNA LAYANAN KOMUNIKASI DATA PADA VEHICULAR NETWORK Nurul Salsabila Wardhani; Melky Sedek Hosea Halim; Ngurah Indra ER
Jurnal SPEKTRUM Vol 10 No 3 (2023): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2023.v10.i03.p13

Abstract

Data demand from personal mobile devices over cellular networks is rapidly increasing. For time-delay tolerant data, the use of paid technology is inefficient. As an alternative for time-delay tolerant data delivery, opportunistic networks are emerging as an effective infrastructure-less communication model. Before it can be used as an alternative solution, it is necessary to analyze the performance of using opportunistic networks, especially the basic routing patterns used. This research analyzes the performance of routing patterns in opportunistic networks by utilizing inter-vehicle networks as mobile nodes in Denpasar City. Two basic routing patterns, namely epidemic and spray and wait, are simulated using The ONE Simulator into two scenarios including a scenario of increasing the average vehicle and a scenario of increasing the buffer size. The simulation results show that in the inter-vehicle network utilization, epidemic routing pattern is superior to spray and wait in terms of delivery probability and average latency, but when assessing in terms of overhead ratio, spray and wait routing pattern can provide lower results. This shows that the epidemic routing pattern is suitable for systems that do not care about high resource utilization.
ANALISIS KINERJA PROTOKOL ROUTING DINAMIS IS-IS UNTUK MENINGKATKAN PERFORMANSI JARINGAN HYBRID KAMPUS UNUD DENPASAR Binti Dona, Sufiana; Wiharta, Dewa Made; Indra ER, Ngurah
Jurnal SPEKTRUM Vol 10 No 4 (2023): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2023.v10.i04.p40

Abstract

As a center for Information and Communication Technology services, the Global Distance Learning Network (GDLN) of Udayana University must reconsider the implementation of static routing protocols that have been applied to meet the increasing demands of computer networks. Dynamic routing protocols, such as Intermediate System to Intermediate System (IS-IS), can be used to address the challenges currently faced with static routing, and serve as a more viable option for larger network requirements. This research evaluates the implementation of static routing protocols and IS-IS at the UNUD Denpasar campus using Graphical Network Simulator-3 to assess the future utilization of the IS-IS routing protocol. Quality of Service (QoS) parameters are used to assess network performance, while the scenarios include PING intervals with settings close to streaming YouTube videos. The research findings reveal that both routing protocols exhibit good service quality, meeting TIPHON criteria with excellent evaluations for packet loss, throughput, and delay, in addition to satisfactory criteria for jitter. Simulation tests demonstrate the superiority of the IS-IS routing protocol compared to static routing when transmitting data in high-resolution streaming video formats like 480p, 720p, and 1080p. On the other hand, static routing is more suitable for disseminating data consisting of lower-resolution streaming videos (360p). Based on the research results, it can be inferred that the dynamic routing protocol IS-IS is more suitable for meeting network demands on a larger scale.
SOLUSI ALTERNATIF PENYAMPAIAN INFORMASI DENGAN TOLERANSI WAKTU TUNDA UNTUK PENGGUNA LAYANAN KOMUNIKASI DATA PADA PEDESTRIAN NETWORK Vina Yuliani, Ni Putu; Permata Sari, Indah Ayu; Indra ER, Ngurah; Setiawan, Widyadi
Jurnal SPEKTRUM Vol 10 No 4 (2023): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2023.v10.i04.p8

Abstract

This research aims to evaluate the performance of routing patterns in opportunistic networks for transmitting time-tolerant information, such as product prices and store coordinates in the Kuta, Badung area by using pedestrians as intermediaries and recipients of information. Two basic routing patterns, epidemic and spray and wait, are simulated using The ONE Simulator into two scenarios including a scenario of increasing average pedestrian density and a scenario of increasing buffer size. The simulation results show that in the scenario of increasing the average pedestrian density, the epidemic routing has a higher delivery probability and lower average latency than the spray and wait routing, but the spray and wait routing has a lower overhead ratio value. In the scenario of increasing buffer size, the spray and wait routing has a higher delivery probability and lower average latency at smaller buffer sizes. Meanwhile, the epidemic routing pattern produces a higher delivery probability and lower average latency at a larger buffer size, although with a difference that is not too significant.
ANALISIS PENGARUH JARAK DAN KECEPATAN TERHADAP KINERJA SISTEM KOMUNIKASI ANTAR KENDARAAN BERBASIS NRF24L01 I Md. Anggar Dwi A, I Md. Anggar Dwi A; Indra ER, Ngurah; Pramaita, Nyoman
Jurnal SPEKTRUM Vol 11 No 1 (2024): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2024.v11.i01.p22

Abstract

The study investigates the impact of distance and speed on wireless communication networks, on vehicle-to-vehicle communication using the low-cost module NRF24L01. Evaluation of performance indicators, such as latency and data loss, is carried out to determine the impact of both of these factors. Understanding the impact of distance and speed on wireless networks is vital as dynamic vehicle-to-vehicle communication develops. The study used several evaluation variations, including measurements ranging from 5 to 100 metres in a stationary scenario, as well as additional tests performed in moving conditions. The test results can provide insight into the advancement of intelligent transportation systems, improving safety, efficiency, and general communication in vehicle-to-vehicle interaction. This will optimize the implementation of the end result of the technology generated by the parties involved.
PENERAPAN SENSOR CJMCU101 UNTUK MENDUKUNG SISTEM SMART LECTURE ROOM Maisha Putra, I Gusti Agung Ngurah; Andika Pranata, I Kadek; Paramitha Sekar Putri A.P., Ni Made; Sukadarmika, Gede; Raka Agung, I Gusti Agung Putu; Purnama, Fajar; Indra ER, Ngurah
Jurnal SPEKTRUM Vol 10 No 4 (2023): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2023.v10.i04.p22

Abstract

This study presents the design of a Smart Lecture Room system that utilizes light intensity sensors, specifically CJMCU101. These sensors are installed in each classroom to monitor the ambient conditions. The implementation of the designed system was carried out in the classrooms of the Udayana University Electrical Engineering Study Program. To achieve this goal, the classroom utilized by the Electrical Engineering Study Program of Udayana University was divided into two classes (DH101 and DH102) and a sensor was installed in each class as an IoT device. The IoT devices are connected to a Raspberry Pi Access Point, where the data from the sensors is stored and monitored using the Thinger.io platform. The validation of the sensor testing is carried out by comparing the results obtained from the sensors with the results obtained from a thermohygrometer measurement. This research produces a prototype smart lecture system, applied to a classroom mockup, that employs IoT devices, sensor databases, and sensor monitoring. The data from each sensor's detection is stored in the LAMP database, which employs Linux, Apache, MySQL, and PHP. The Thinger.io platform monitors the values of each sensor. A variation in accuracy between the sensor and measuring instrument results in a difference in their values. The CJMCU101 light intensity sensor has an average accuracy of 93.48% compared to the measuring instrument on DH101. The average accuracy of the sensor value compared to the measuring instrument on DH102 is 95.96%.
ANALISIS PERBANDINGAN TOLERANSI KESALAHAN (FAULT TOLERANCE) ROUTING STATIC DAN OSPF PADA JARINGAN HYBRID UNUD Anugrah Br. Ginting, Putri; Diafari, G A K; Indra ER, Ngurah; Wiharta, Dewa Made
Jurnal SPEKTRUM Vol 11 No 1 (2024): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2024.v11.i01.p4

Abstract

A reliable and failure-resistant computer network is an important prerequisite in the modern interconnected environment. This research aims to examine and compare the effectiveness of fault tolerance between two commonly used routing protocols, namely static routing and OSPF (Open Shortest Path First), in the context of hybrid networks at Udayana University (UNUD). This research uses GNS3 to simulate the UNUD network environment. The research method is carried out by implementing static and OSPF routing separately in the GNS3 simulation. After the routing implementation is carried out, the network is tested against various error scenarios to observe how each routing method handles the situation.In this research, the analysis results provide a deeper understanding of the advantages and disadvantages of each routing method. Our findings illustrate that OSPF significantly improves fault tolerance and network availability compared to static routing in complex hybrid network environments.
RANCANG BANGUN PURWARUPA SISTEM KOMUNIKASI ANTAR KENDARAAN MENGGUNAKAN NRF24L01 MODE SIMPLEX Adi Wiranata, K. N.; Indra ER, Ngurah; Sukadarmika, Gede
Jurnal SPEKTRUM Vol 11 No 1 (2024): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2024.v11.i01.p27

Abstract

This research aims to design and develop a prototype vehicle-to-vehicle (V2V) communication system utilizing the NRF24L01 module, ESP32 microcontroller, and OLED display in simplex mode. The system enables effective and instant communication between vehicles in the Vehicle Ad-Hoc Networks (VANETs) environment. In the implementation, we optimized the power transmission level and data rate to ensure fast and responsive data transmission. We integrated key components, such as the ESP32, NRF24L01, and OLED display, into the hardware design to establish a reliable and seamlessly integrated system. We also designed the prototype to minimize costs. The prototype demonstrates an effective and cost-efficient technical solution for vehicle communication, making it suitable for research and development projects requiring wireless communication in real-world vehicle scenarios. This research aims to positively contribute to advancing technology to support connectivity and safety in future vehicle mobility. The findings of this research can be beneficial for researchers, engineers, and policymakers interested in improving vehicular communication and mobility.
SISTEM REKOMENDASI TEMPAT WISATA DI BALI MENGGUNAKAN IMDB WEIGTED RATING DAN CHATBOT Oktafiana Susanti, Baiq Dwinda; Setiawan, Widyadi; Indra ER, Ngurah
Jurnal SPEKTRUM Vol 10 No 4 (2023): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2023.v10.i04.p9

Abstract

The Bali government is trying to re-optimize Bali's tourism potential after the Covid-19 pandemic. To improve the Balinese economy which had declined during the Covid-19 pandemic where foreign tourist visits decreased by 99.93%. In 2022, the tourism industry in Bali finally recovered with an increase in foreign tourist visits by 12.23%. The Bali government needs to optimize the number of foreign tourist visits to re-optimize the tourism sector. One way that can be done is to improve digital-based information services to introduce Bali to tourists. Therefore, to assist the Bali provincial government in optimizing the tourism sector, a recommendation system for tourist attractions in Bali called "MELALI" was created by utilizing the IMDb Weighted Rating algorithm and equipped with a chatbot as a customer service. Based on the results of system testing using Root Mean Square Error (RMSE), the result is 0.0126 (close to zero), this shows that the model made has a small error rate, besides that the chatbot feature has also been able to identify keywords and provide output in accordance with the requested keywords. Overall the system is running well.
Co-Authors Adi Wiranata, K. N. Amanda Saraswati, Ni Putu Andika Pranata, I Kadek Anugrah Br. Ginting, Putri Binti Dona, Sufiana Budiastra, IN David Clemens Sumampouw Dewa Made Mahendra Yudha Dewa Made Wiharta Diafari, G A K Dipta, I Made Yogaswara Eka Yayuk Fransiska Simak Fajar Purnama Fajar Purnama Feliks Sinaga Gede Krisna Andika Putra Gede Sukadarmika I Dewa Gede Aditya Pemayun I G. A. K. Diafari Djuni Hartawan I Gusti Agung Putu Raka Agung, I Gusti Agung Putu I Gusti Ngurah Ari Wira Nugraha I Gusti Ngurah Arya Tri Andhika I Made Oka Widyantara I Made Yogaswara Dipta I Md. Anggar Dwi A, I Md. Anggar Dwi A I Wayan Shandyasa I Wayan Sukerayasa I.W. Aryadi Ida Ayu Dwi Giriantari IGB Alit Putra Wijaya IGM.W.S. Handdy IGP. Agus Aries Pratama IGst Ngr PT. Adi S.P. Joni Wijaya Fathoni K.T. Efendi Kadek Rangga Dwipayana Komang Sri Utami L.D. Purnamasari Lina wati Linawati linawati linawati Linawati Linawati Made Dhyo Pradnyadiva Made Sudarma Maisha Putra, I Gusti Agung Ngurah Melky Sedek Hosea Halim Muhammad Audy Bazly N.M.E.P. Astiti Ni Made Ary Esta Dewi Wirastuti Nurul Salsabila Wardhani Nyoman Pramaita Nyoman Wendy Saputra Oktafiana Susanti, Baiq Dwinda Pande Ketut Sudiarta Pande Mastra Sedana Pande Putu Wahyu Pramanda Paramitha Sekar Putri A.P., Ni Made Permata Sari, Indah Ayu Prahasta Napolado Damanik Purnawan, I Putu Abdi R.S.E.C. Nesa Rendi Gustina Setiawan, Putu Ayu Citra Vina Yuliani, Ni Putu W. Setiawan Widyadi Setiawan Yansen Andriyanto Yoga, I Putu Sudharma