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All Journal Jurnal SPEKTRUM Jupiter IPTEK Journal of Proceedings Series TELKOMNIKA (Telecommunication Computing Electronics and Control) Matrix : Jurnal Manajemen Teknologi dan Informatika Journal of Electrical, Electronics and Informatics International Journal of Engineering and Emerging Technology Jurnal SPEKTRUM
Nyoman Pramaita
Universitas Udayana
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Library & Information Science Mechanical Engineering

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Journal : Journal of Electrical, Electronics and Informatics

 1 
Allocation For Wi-Fi Devices At Campus of Udayana University in Bukit Jimbaran Using Atoll Applications Pande Ketut Sudiarta; Nyoman Pramaita
Journal of Electrical, Electronics and Informatics Vol 2 No 1 (2018): JEEI (February 2018)
Publisher : Institute for Research and Community Services Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEEI.2018.v02.i01.p03

Abstract

Access to intranet and internet networks in the campus area requires a number of Wi-Fi devices to cover the coverage area of Udayana University. The Wi-Fi service is expected to be used for VoIP applications in the context of wireless communications. The IEEE 802.11g standard specifies an outdoor service range of 140 m and an indoor service range of 38 m. From research conducted in the engineering faculty area, the quality of VoIP service uses Wi-Fi with range of 25 m. In this research, the design of Udayana University campus Wi-Fi needs using Atoll application with IEEE802.11g standard at 140 m, 38m and 25m ranges. The results obtained to cover Udayana University campus area require Wi-Fis: 7 units for range 140 m, 98 units for range of 38 m and 225 units for range of 25 m
Remote Control Switching System Based on Wireless Technology Luh Kadek Pracanthi Dyah Sekartaji; Nyoman Pramaita; Nyoman Gunantara
Journal of Electrical, Electronics and Informatics Vol 3 No 2 (2019): JEEI (August 2019)
Publisher : Institute for Research and Community Services Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEEI.2019.v03.i02.p05

Abstract

Remote control switching system is used to control the switching of the electrical and electronic appliances from a distance. This remote serves to facilitate the use of the switching of electrical, and electronic appliances for people with disabilities, and the elderly. This paper develops a remote control system using radio frequency technology utilizing the principle of wireless system. The remote control system is constructed by RF433 module as the transmitter, and receiver, IC HT12E module as the encoder, and IC HT12D module as the decoder. To achieve the aim of this research: a transmitter system is designed to transmit a signal when the keypad is pressed; a receiver system is designed to receive the signal from the transmitter system, then the system will turn on and turn off the loads. Based on experimental results, this design system is capable to turn on and turn off the loads with a transmission distance up to 18 meters, without obstruction, and 15 meters with obstruction.
Design of Orthogonal Variable Spreading Factor (OVSF) Performance Simulation Program in Multipath Fading Channels I Gede Arya Gangga Gajanada; Nyoman Pramaita; I Gusti Agung Komang Diafari Djuni Hartawan
Journal of Electrical, Electronics and Informatics Vol 4 No 2 (2020): JEEI (August 2020)
Publisher : Institute for Research and Community Services Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEEI.2020.v04.i02.p05

Abstract

The characteristics of wireless channel are determined by multipath propagation. The transmitted signal will be scattered so that it produces fading. Fading influenced by multipath component will cause delay spread which damages the signal. Thus, spread spectrum technology is used by using a bandwidth that is greater than the original signal. The objective of this study was to determine the effect of the number of multipath components on orthogonal variable spreading factor (OVSF) codes on multipath fading channels viewed from values and Bit Error Rate (BER) graphs versus Energy Bits per Noise (Eb/No). This study would compare the performance of OVSF code communication system on multipath channels by varying multipath components of 4, 8, 12, 16 and the length of OVSF codes used of 16, 8 and 4. The simulation results showed an increase in BER values when the number of multipath components was added. The more the number of multipath components used, the more the number of reflected signals that will interfere with the desired signal in the receiver. The length of the OVSF code influences the performance of the OVSF code on the multipath fading channel, because each code has a different processing gain value that is affected by the length of the code used
Performance Analysis of MIMO STBC System in Flat Fading and Frequency Selective Fading Channels Pebri Yeni Samosir; Nyoman Pramaita; I Gst A. Komang Diafari Djuni Hartawan; Ni Made Ary Esta Dewi Wirastuti
Journal of Electrical, Electronics and Informatics Vol 3 No 1 (2019): JEEI (February 2019)
Publisher : Institute for Research and Community Services Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEEI.2019.v03.i01.p04

Abstract

Multiple Input Multiple Output (MIMO) technology is a technique that can be used to overcome multipath fading. The multipath fading is caused by signals coming from several paths that experience different attenuations, delays and phases. In a multipath condition, an impulse that sent by the transmitter, will be received by the recipient not as an impulse but as a pulse with a spread width that called delay spread. Delay spread can cause intersymbol interference (ISI) and bit translation errors from the information received. To determine the effect of delay spread on the MIMO system, then MIMO system performance research was performed on flat fading and frequency selective fading channels using the Space Time Block Code (STBC) coding technique. This research was conducted using MatLab 2018a software. The simulation results show that the MIMO STBC system performance on flat fading channels is better than the MIMO STBC system performance on the frequency selective fading channel. This result is analyzed based on the value of BER vs. Eb/No and eye diagram.
Evaluation of Clipping and Filtering-Based PAPR Reduction in OFDM System N. M. A. E. D. Wirastuti; N. Pramaita; I M. A. Suyadnya; D. C. Khrisne
Journal of Electrical, Electronics and Informatics Vol 1 No 2 (2017): JEEI (September 2017)
Publisher : Institute for Research and Community Services Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEEI.2017.v01.i02.p05

Abstract

This paper investigates clipping and filtering techniques in reducing peak average power ratio (PAPR) of Orthogonal Frequency Division Multiplexing (OFDM) system. The concept of OFDM is to split a high speed serial data into parallel data at a lower speed, then the parallel data carried by mutually orthogonal subcarriers. The high of PAPR is one of disadvantages of OFDM system. The high PAPR can damages the form of OFDM and reduces its performance. The purpose of this study is to reduce PAPR using simulation. OFDM was simulated with and without clipping filtering then compared. The methods used to reduce PAPR was clipping and filtering technique. Clipping and filtering technique operates by clipping the output of inverse Fourier transform that exceed the threshold. Graphics PAPR vs. CCDF was used to evaluate the performance of OFDM systems. PAPR for OFDM system using Fourier transform when CCDF = 10-3 is 11,2 dB, with classical clipping PAPR was 4,1 dB and PAPR 4,6 dB when with deep clipping.
Co-Authors Agus Dharma Arzalia Khairunnisa Yasmine Charolina Devi Oktaviana Soleman Charolina Devi Oktaviana Soleman D. C. Khrisne DNKP Negara Hardi yusa I G A Ari Kukuh Sentanu I G. A. K. Diafari Djuni Hartawan I G.A.G.K. Diafari I Gd. Tri Dharma Prawira I Gede Abi Yodita Utama I Gede Arya Gangga Gajanada I Gede Harsemadi I Gede Krisnu Wardana I Gst Agung Putu Raka Agung I Gusti Agung Komang Diafari Djuni Hartawan I Kadek Adi Wiguna Sanjaya I Ketut Widi Arjana Yasa I Komang Dharmendra I M. A. Suyadnya I Made Agung Pranata I Made Oka Widyantara I Nyoman Gunantara I Putu Agus Priska Suryana I Putu Ardana I Putu Dio Gangga Saskara I Putu Indra Pramana Yoga I Putu Warma Putra Ida Bagus Kade Dwi Suta Negara Janice Jessica Indrayani Joa Quin Kadek Agus Mahabojana Dwi Prayoga Komang Diyana Putra Komang Gede Widi Adnyana Komang Oka Saputra Linawati Linawati Luh Kadek Pracanthi Dyah Sekartaji M. Husnul Ullum Azhari Made Arya Putra Kusuma Made Sudarma Made Sugiri Muhamad Zainul Halim Ni Made Ary Esta Dewi Wirastuti Ni Putu Lintang Anggitiadewi NMAE Dewi Wirastuti Nyoman Putra Sastra P. L. Johnson Pande Ketut Sudiarta Pebri Yeni Samosir Putra Yudhanata Pratama Putu Okta Hadi Saputra Sagung Intan Saraswati Tria Hikmah Fratiwi Wahyu Sahputra Willy Sucipto