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<![CDATA[Desain Perangkat Lunak SMS dengan Translasi Text Aksara Bali ]]>
<![CDATA[Ida Bagus Kade Dwi Suta Negara]]>;
<![CDATA[NMAE Dewi Wirastuti]]>;
<![CDATA[Nyoman Pramaita]]>
<![CDATA[ JUPITER (Jurnal Penelitian Ilmu dan Teknologi Komputer) Vol 10 No 2 (2018): Jupiter Oktober 2018 ]]>
Publisher : <![CDATA[Teknik Komputer Politeknik Negeri Sriwijaya ]]>
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DOI: 10.5281/zenodo.3406880
<![CDATA[Sebagian besar masyarakat Bali mampu berkomunikasi menggunakan bahasa Bali, akan tetapi hanya sedikit orang Bali yang mampu dan mengerti tata penulisan Aksara Bali. Hal ini terjadi karena tata cara penulisan Aksara Bali aturannya cukup kompleks. Diperlukan cara-cara yang inovatif untuk menarik minat masyarakat dalam mempelajari Aksara Bali, salah satunya dengan memanfaatkan teknologi informasi. Penelitian ini membahas desain perangkat lunak SMS dengan translasi text Aksara Bali. Dalam pembuatan desain perangkat lunak ini terdiri dari beberapa tahapan, yaitu: pengumpulan data dan literatur, identifikasi permasalahan, desain dan perancangan sistem, serta implementasi dan pengujian. Hasil desain translasi text Aksara Bali pada perangkat lunak SMS berupa: perancangan proses translasi text Aksara Bali, perancangan proses pegiriman SMS, dan perancangan proses penerimaan SMS. Sedangkan desain antar muka translasi text Aksara Bali pada perangkat lunak SMS berupa desain antarmuka pengiriman dan penerimaan SMS.]]>
<![CDATA[Novel Hybrid Orthogonal Large Set Code Sequence for High Density Wireless Networks ]]>
<![CDATA[Nyoman Pramaita]]>;
<![CDATA[P. L. Johnson]]>
<![CDATA[ IPTEK Journal of Proceedings Series Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013 ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j23546026.y2014i1.256
<![CDATA[CDMA technique has been successfully employed to implement high capacity mobile networks with optimum channel bandwidth utilization. The two most coveted criteria for the spreading codes used in such network are, the number of codes in the set and the code orthogonality, in order to ensure accommodation of large number of users and as well as minimal interference between the users. Walsh code has proved to be a popular orthogonal code, whereas m-sequence, Gold code and Kasami code have established themselves as popular non-orthogonal binary codes. Small set Orthogonal Kasami code has been proposed and evaluated by researchers for CDMA applications. In this paper the authors report the design of hybrid orthogonal large set (HOLS) code for synchronous CDMA systems. The HOLS code was evaluated in a synchronous CDMA system over different channel conditions. The authors also demonstrate that the BER performance of the HOLS code is comparable to that of the existing orthogonal codes, but outperforms Gold and large set Kasami code sequences. The HOLS code sequence is also shown to outperform the existing code sequences in the number of cells it can support. In terms of multiple access interference (MAI), the cross-correlation function (CCF) of the HOLS code sequence is comparable to that of Walsh and orthogonal small set Kasami codes, and much better than those of Gold and large set Kasami code sequences. HOLS code sequence has comparable auto-correlation function (ACF) with that of Gold, large set Kasami and orthogonal small set Kasami code sequences and a much better ACF than that of Walsh code sequence.]]>
<![CDATA[Allocation For Wi-Fi Devices At Campus of Udayana University in Bukit Jimbaran Using Atoll Applications ]]>
<![CDATA[Pande Ketut Sudiarta]]>;
<![CDATA[Nyoman Pramaita]]>
<![CDATA[ Journal of Electrical, Electronics and Informatics Vol 2 No 1 (2018): JEEI (February 2018) ]]>
Publisher : <![CDATA[Institute for Research and Community Services Udayana University ]]>
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DOI: 10.24843/JEEI.2018.v02.i01.p03
<![CDATA[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]]>
<![CDATA[Remote Control Switching System Based on Wireless Technology ]]>
<![CDATA[Luh Kadek Pracanthi Dyah Sekartaji]]>;
<![CDATA[Nyoman Pramaita]]>;
<![CDATA[Nyoman Gunantara]]>
<![CDATA[ Journal of Electrical, Electronics and Informatics Vol 3 No 2 (2019): JEEI (August 2019) ]]>
Publisher : <![CDATA[Institute for Research and Community Services Udayana University ]]>
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DOI: 10.24843/JEEI.2019.v03.i02.p05
<![CDATA[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.]]>
<![CDATA[Design of Orthogonal Variable Spreading Factor (OVSF) Performance Simulation Program in Multipath Fading Channels ]]>
<![CDATA[I Gede Arya Gangga Gajanada]]>;
<![CDATA[Nyoman Pramaita]]>;
<![CDATA[I Gusti Agung Komang Diafari Djuni Hartawan]]>
<![CDATA[ Journal of Electrical, Electronics and Informatics Vol 4 No 2 (2020): JEEI (August 2020) ]]>
Publisher : <![CDATA[Institute for Research and Community Services Udayana University ]]>
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DOI: 10.24843/JEEI.2020.v04.i02.p05
<![CDATA[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]]>
<![CDATA[Performance Analysis of MIMO STBC System in Flat Fading and Frequency Selective Fading Channels ]]>
<![CDATA[Pebri Yeni Samosir]]>;
<![CDATA[Nyoman Pramaita]]>;
<![CDATA[I Gst A. Komang Diafari Djuni Hartawan]]>;
<![CDATA[Ni Made Ary Esta Dewi Wirastuti]]>
<![CDATA[ Journal of Electrical, Electronics and Informatics Vol 3 No 1 (2019): JEEI (February 2019) ]]>
Publisher : <![CDATA[Institute for Research and Community Services Udayana University ]]>
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DOI: 10.24843/JEEI.2019.v03.i01.p04
<![CDATA[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.]]>
<![CDATA[Evaluation of Clipping and Filtering-Based PAPR Reduction in OFDM System ]]>
<![CDATA[N. M. A. E. D. Wirastuti]]>;
<![CDATA[N. Pramaita]]>;
<![CDATA[I M. A. Suyadnya]]>;
<![CDATA[D. C. Khrisne]]>
<![CDATA[ Journal of Electrical, Electronics and Informatics Vol 1 No 2 (2017): JEEI (September 2017) ]]>
Publisher : <![CDATA[Institute for Research and Community Services Udayana University ]]>
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DOI: 10.24843/JEEI.2017.v01.i02.p05
<![CDATA[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.]]>
<![CDATA[Classification Of Loyality Customer Using K-Means Clustering, Studi Case : PT. Sucofindo (Persero) Denpasar Branch ]]>
<![CDATA[Charolina Devi Oktaviana Soleman]]>;
<![CDATA[Nyoman Pramaita]]>;
<![CDATA[Made Sudarma]]>
<![CDATA[ International Journal of Engineering and Emerging Technology Vol 5 No 2 (2020): July - December ]]>
Publisher : <![CDATA[Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University ]]>
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DOI: 10.24843/IJEET.2020.v05.i02.p28
<![CDATA[The success of the company in developing its services can be seen from the number of customers who use these services, customer loyalty in using services can be seen from customer loyalty. Customer loyalty is an important factor in the development of a business in the company, repeated use of services can be used as an indicator in determining the level of customer loyalty, by paying attention to customer loyalty, of course the company will be able to develop customer focus on an ongoing basis. Clarification of customers needs to be done to find out how demographics customers use services, can be seen from how many customers and the level of transactions made. K-Means clustering is one method that can be used for the classification process of customer data through transactions carried out by forming several clusters, this classification process is divided into 5 clusters with the results of which include 1) A few small number transactions with many customers, 2) Many transactions small number with many customers, 3) a few transactions with a medium number of customers begin to decrease, 4) a few large number transactions a few customers, 4) a moderate number of transactions with a number of customers.]]>
<![CDATA[Classification and Prediction of Smoking Behavior and Hypertension in the Healthy Family Program with R (Case Study : Bali Provincial Government Department of Health) ]]>
<![CDATA[I Gede Abi Yodita Utama]]>;
<![CDATA[Nyoman Pramaita]]>;
<![CDATA[Made Sudarma]]>
<![CDATA[ International Journal of Engineering and Emerging Technology Vol 5 No 2 (2020): July - December ]]>
Publisher : <![CDATA[Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University ]]>
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DOI: 10.24843/IJEET.2020.v05.i02.p07
<![CDATA[The Healthy Indonesia Program with the Family Approach aims to improve the quality of human life and is a government program that starts from the family environment. There are 12 indicators marking the health status of a family. The Provincial Government of Bali in implementing the 12 indicators there are two main problems of non-communicable diseases, namely patients with hypertension and smoking behavior. An analysis in the form of classification and prediction is needed to overcome these problems. Classification and prediction is one of the techniques in data mining. Through R, a decision tree can be produced which can be used to help the classification process and produce predictions related to the problem of non-communicable diseases. The decision tree results can be predicted that the dominant hypertension are in the age group classification of 20-40 years and 41-70 years with a probability of 0.14. As for smoking behavior, the highest smoking tendency was obtained in the classification of male sex whose status worked with a probability of 0.44.]]>
<![CDATA[Desain Program Simulasi Unjuk Kerja Kode Walsh Pada Kanal Multipath Fading ]]>
<![CDATA[Made Arya Putra Kusuma]]>;
<![CDATA[Nyoman Pramaita]]>;
<![CDATA[I Made Oka Widyantara]]>;
<![CDATA[I Gusti Agung Komang Diafari Djuni Harta]]>
<![CDATA[ Matrix : Jurnal Manajemen Teknologi dan Informatika Vol 10 No 1 (2020): MATRIX - Jurnal Manajemen Teknologi dan Informatika ]]>
Publisher : <![CDATA[Unit Publikasi Ilmiah, P3M Politeknik Negeri Bali ]]>
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DOI: 10.31940/matrix.v10i1.1833
<![CDATA[Penelitian ini bertujuan untuk mengetahui pengaruh perubahan jumlah komponen multipath pada unjuk kerja kode Walsh pada kanal multipath fading melalui simulasi dengan menggunakan software Matlab. Hasil simulasi ditinjau dari parameter Bit Error Rate (BER) vs Energy Bit per Noise (Eb/No). Dari simulasi dilihat perbandingan performasi sistem komunikasi unjuk kerja kode Walsh pada kanal multipath fading yang dihasilkan dengan memvariasikan jumlah komponen multipath dengan jumlah 2, 4, 6 dan 8. Sistem ini dibandingkan dengan menggunakan kanal flat fading dalam kondisi yang ideal. Hasil dari simulasi menunjukkan performansi sistem komunikasi unjuk kerja kode Walsh pada kanal multipath fading mengalami peningkatan nilai BER pada saat jumlah komponen multipath ditambahkan. Hal ini disebabkan karena semakin banyak jumlah komponen multipath yang digunakan, maka semakin banyak juga jumlah sinyal pantul yang menginterferensi sinyal yang diinginkan di penerima.]]>
