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Risanuri Hidayat
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Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada Jl. Grafika No 2. Kampus UGM Yogyakarta 55281
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INDONESIA
Jurnal Nasional Teknik Elektro dan Teknologi Informasi
Published by Universitas Gadjah Mada
ISSN : 23014156     EISSN : 24605719     DOI : 10.22146/jnteti
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering
Topics cover the fields of (but not limited to): 1. Information Technology: Software Engineering, Knowledge and Data Mining, Multimedia Technologies, Mobile Computing, Parallel/Distributed Computing, Artificial Intelligence, Computer Graphics, Virtual Reality 2. Power Systems: Power Generation, Power Distribution, Power Conversion, Protection Systems, Electrical Material 3. Signals, Systems, and Electronics: Digital Signal Processing Algorithm, Robotic Systems and Image Processing, Biomedical Instrumentation, Microelectronics, Instrumentation and Control 4. Communication Systems: Management and Protocol Network, Telecommunication Systems, Wireless Communications, Optoelectronics, Fuzzy Sensor and Network
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 644 Documents
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Implementasi Filter Pre-Emphasis untuk Transmisi Sinyal Audio pada Sistem Komunikasi FBMC-OQAM Anggun Fitrian Isnawati; Jans Hendry
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 8 No 4: November 2019
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

High speed data transmision demands broader bandwidth. This has an effect towards the limitation of frequencies spectrum allocation as well as interference. To solve this, multi carrier modulation is one of choices. Having better power spectral density compared to OFDM, the FBMC-OQAM has been chosen as the multi carrier modulation. The FBMC is equipped with Poly Phase Network filter, makes it able to achieve better PSD. Frequently used filter, which is pre-emphasis, is popular in speech processing that is possibly able to be extended in use. Pre-emphasis is also accompanied with de-emphasis filter, which is similar to FBMC. Pre-emphasis filter suppresses low frequency magnitudes and emphasizes higher frequency. By assuming that noise presents in higher frequency, an approachment to protect audio signal by itself is proposed. Random noise is broadband signal where frequencies can have ranges from lower to higher with smaller magnitudes compared to signal. By providing slots in audio higher frequency and magnitudes, random noise occupied those slots with relatively weak magnitudes then sent through the air. At the receiver, a de-emphasis filter invert the process to restore signal by de-emphasizing higher frequency and removing noise as well. The result shows better BER with this approachment. For example, when Eb/No was 13 dB, BER with and without pre-emphasis are approximately 0.0184 dB and 0.0187 dB, consecutively. It means there was 250 bits or approximately 32 points has been corrected. It shows that pre-emphasis can work along with PPN FBMC filter to gain better BER values.
Komunikasi M2M Kognitif Berbasis PRMA dengan Multi Ultra Frame dan Payload Exchange Eko Arifianto; Aghus Sofwan; Teguh Prakoso
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 8 No 4: November 2019
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

M2M communication is the process of exchanging data between devices on a network of capillary systems. The communication channel used is an empty space on a TV channel with a cognitive radio mechanism combined PRMA with a fixed and periodic scheme. The scheme has a working system that allows PRMA to place data in the same free space, which causes collisions. Therefore, it needs repetition, which requires more energy and causes inefficient communication. Thus, a Multi Ultra Frame (MUF) and Payload Exchange (PE) data exchange scheme is proposed to reduce collisions and repetition by giving grades and features to the data, with the aim to achieve optimal use of empty space. An indication of efficient communication is the optimal use of empty space, which affects the throughput (PT), duty cycle (Cyl), and interference ratio (fo). The higher PT and the lower Cyl and fo, the more efficient the communication. MUF and PE schemes produce PT of 99-41%, Cyl of 1-4.4%, and fo of 10-33%. Fixed and periodic schemes produce PTof 81-21%, Cyl of 2-9%, andfo of 15-52%. Optimization of MUF and PE schemes producePTof 99-70%, Cyl of 0.5-2.2%, and fo of 8-14%. Optimization of fixed and periodic schemes produce PTof 66-35%, Cyl of 3-6%, and fo of 19-28%.
Implementasi Full State Feedback LQR dengan JST pada Kendali Ketinggian Quadrotor Faisal Fajri Rahani; Tri Kuntoro Priyambodo
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 8 No 4: November 2019
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

One type of unmanned aircraft that is often used today is quadrotor. This type of aircraft has the ability to take off vertically. This study implemented an altitude control system on the z-axis quadrotor. The control used is the full state method of Linear Quadratic Regulator (LQR) with artificial neural networks. The LQR full state feedback method used in this system is 12-states with each feedback constant Ktuned to the neural network method. This study implements the artificial neural network method to change the feedback constant on the z-axis. Artificial neural network architecture used 12 input layers, 48 hidden layers, and 1 output layer. This study compares the value of the results of the simulation with the response value of the system implementation results applied to the quadrotor. Testing with full state LQR feedback using artificial neural networks improves the system response to ±0.77 seconds and improves steady state error values up to ±12 cm. Based on the results of these studies, this system can be implemented to control other systems.
Penerapan Algoritme Linear Regression untuk Prediksi Hasil Panen Tanaman Padi Heru Wahyu Herwanto; Triyanna Widiyaningtyas; Poppy Indriana
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 8 No 4: November 2019
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Rice yields are very influential in meeting the basic food needs of rice. Because the needs of rice are always rising, it is necessary to predict crop yields to estimate the future planting to meet the basic food needs. The method used in this paper is linear regression algorithm, which can predict the yield of rice plants. The steps in this research are as follows: (1) data collection through surveys to farmers in Lamongan by giving questionnaires to respondents; (2) pre-processing the data, which is data cleaning; (3) applying linear regression to determine the strength of the relationship between one dependent or dependent variable and a set of independent or independent variables; and (4) results of the validation. Testing accuracy is carried out by measuring Root Mean Squared Error (RMSE). The average value of accuracy of the RMSE is 0. 432. This indicates that the variation of values produced by a forecast model is close to accurate, and results in the compatibility of the Multiple Linear Regression Model, with a reliability level of 94.51%.
Antena Ring Sirkular dengan Kemampuan Penekanan Higher Order Mode Rheyuniarto Sahlendar Asthan; Achmad Munir
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 8 No 4: November 2019
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

This paper presents the development of a circular ring-shaped antenna with ability to suppress higher order mode. An S-shaped is added into the ring in order to satisfy the goal of the antenna development. The upper and lower edges of the ring are excited differentially using two ports in order to have symmetrical radiation pattern. Each port is directly connected to a 50 Ω SMA connector using microstrip feeding line. The antenna is designed with an FR4 dielectric substrate with the dimension of 85.4 mm × 85.4 mm and intended to work at the center frequency of 0.9 GHz. The proposed antenna is compared with the conventional circular ring-shaped antenna to observe the antenna performances in term of higher order mode suppression. In addition, optimization is carried out by varying physical antenna parameters. The measurement result shows that circular ring-shaped antenna with S-shaped element can suppress the higher order mode frequency of 19.55 dB and work properly at the desired frequency of 0.9 GHz. The measured impedance bandwidth for the reflection coefficient (S11) below −10 dB is 251 MHz with fractional bandwidth (fBW) of 27.89%. The symmetrical radiation pattern in E-plane with maximum power density at the boresight is obtained at the frequency of 0.9 GHz and 1.94 GHz. The measured 3 dB beamwidths of 0.9 GHz and 1.94 GHz in E-plane are 99.4o and 100.5o, respectively.
Desain Sistem Pemantau Konsumsi Energi untuk Rusunawa di Indonesia Yakub Fahim Luckyarno; Sentagi Sesotya Utami; Faridah Faridah; Ressy Jaya Yanti
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 8 No 4: November 2019
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Electricity consumption in the household sector is classified into two categories based on the economic class of the household. The first category is the low class, in which the greatest electricity consumption (approximately 20.00%) is used for lighting. The second category is the medium and high class, in which the greatest electricity consumption (approximately 20.00-32.00%) occurs for powering the air conditioning (AC) system. To date, vertical type housing can be commonly found in the medium class, and as of 2017, the level of occupation has reached 9.52%. This condition calls for an analysis on the energy consumption and energy efficiency of the buildings. Case found in a low-cost apartment building, also known as Rumah Susun Sederhana Sewa (Rusunawa) in Yogyakarta, Indonesia, is one example where an energy monitoring system is needed. This is due to the inhabitants' habit of electrical usage that is unsuitable to the Rusunawa's function, such as their inefficient use of AC and washing machines. The energy meter system measures the electrical voltage and current of electrical appliances that are attached to the system. This system utilizes a ZMPT101B-5 sensor to measure the voltage and an ACS712 sensor to measure the elctrical current. The design of the energy meter system enables one to measure the voltage and current of electrical appliances with a 4.40% margin of error. Based on the measurements obtained in this paper, the AC is the greatest source of power consumption, with an approximate value of 800 kWh.
Sistem Pemeriksa Pola Kalimat Bahasa Indonesia berbasis Algoritme Left-Corner Parsing dengan Stemming Hartanto Kusuma Wardana; Iswara Swanita; Banu Wirawan Yohanes
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 8 No 3: Agustus 2019
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

In recent years, human computer interaction has been attracted many researchers and applied in various applications. In order to understand human language, the computer is required to learn human language grammar, one of the languages is Bahasa Indonesia. Left-corner parsing algorithm is used extensively to check English grammar. However, only several implementations are found in Bahasa Indonesia. By combining Left-Corner Parsing algorithm with stemming algorithm, to reproduce basic word and word type before the sentence is parsed according to production rules defined, this article discusses Bahasa Indonesia sentence pattern checking system testing for four single sentence patterns, i.e., Subject-Predicate, SP-Object, SP-Adverb, and SPOA. The testing resultshows the accuracy of sentence pattern recognition of 95.3%.
Normalisasi Kata Tidak Baku yang Tidak Disingkat dengan Jarak Perubahan I Gusti Bagus Baskara Nugraha; Rafi Dwi Rizqullah
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 8 No 3: Agustus 2019
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Voice assistant technology is growing rapidly and its use has begun to spread to daily use. However, voice assistant usages are still limited to standard conversation languages. Meanwhile, Indonesian people are accustomed to informal language in daily conversation. This research gives solution to overcome the problem of voice assistants with informal words or words that will not be found in formal word dictionary. We propose text normalization using Levenshtein distance. Test result shows that normalization using Levenshtein distance outperform the normalization using Longest Common Subsequence (LCS) distance with accuracy difference of 8.34%.
Desain Kerangka Kerja Permainan Digital Sebagai Media Terapi Kemampuan Sosial Anak Autis Rahadian Kurniawan; Restu Rakhmawati; Izzati Muhimmah; Dimas Panji Eka Jalaputra
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 8 No 3: Agustus 2019
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

This study discusses the process of design, implementation and evaluation of game frameworks to enhance social skills therapy for children with autism. Children with autism have unique characters, so they have special preferences. The design of a digital game framework for children with autism is also still very limited. The framework design process is obtained from the analysis of commercial digital game components played by children with autism, research that discusses the design of digital games for children with autism, and consultation with experts, psychologists, and therapists. The proposed framework is then used as a guideline for developing multiplayer games. The multiplayer games is a proof of concept of the proposed framework. From the result of evaluation, this multiplayer game has been able to be used to enhance eye gaze tracking, initiation, and reciprocal interaction in children with autism.
Konsistensi Ranking pada Sistem Rekomendasi Resep Masakan dengan Simple Additive Weighting Ratih Kartika Dewi; Komang Candra Brata; Nabila Nabila
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 8 No 3: Agustus 2019
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

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Abstract

Along with the development of internet technology, recipes can easily be obtained from various sources, such as websites, mobile applications, and social media. The variety of recipes that available in various media still have one disadvantage: it can not accommodate user preferences. In this kind of problem, the role of a Decision Support System (DSS) is needed by people who actively cook using recipes in daily cooking activities. DSS recommendations for recipes can be built by using Simple Additive Weighting (SAW) algorithm. The variables chosen as criteria for recipe recommendations are duration of cooking, level of complexity, and calories. The ranking consistency test aims to see if there is a ranking reversal (the first ranking is swapped with the latest ranking) when there is a change in the number of recipes (alternatives). The purpose of this research is to find out the reliability of the SAW algorithm in the issue of recipe recommendations. The ranking consistency test result shows consistency of 100% and there is no rank reversal (last recommendation becomes first recommendation) for this case.

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