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All Journal Jurnal Ilmu Komputer dan Informasi Jurnal Ilmu Komputer Buletin Udayana Mengabdi Jurnal SPEKTRUM Jupiter TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) Jurnal Teknik Elektro PROSIDING CSGTEIS 2013 Proceedings Konferensi Nasional Sistem dan Informatika (KNS&I) JOIV : International Journal on Informatics Visualization JUTIK : Jurnal Teknologi Informasi dan Komputer Matrix : Jurnal Manajemen Teknologi dan Informatika Cetta: Jurnal Ilmu Pendidikan Journal of Computer Science and Informatics Engineering (J-Cosine) Journal of Electrical, Electronics and Informatics International Journal of Engineering and Emerging Technology Indonesian Journal of Electrical Engineering and Computer Science Journal of Energy and Electrical Engineering (JEEE) Jurnal Ilmiah Vastuwidya SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi) MATRIX : JURNAL MANAJEMEN TEKNOLOGI DAN INFORMATIKA Ulil Albab
Ni Made Ary Esta Dewi Wirastuti
Jurusan Teknik Elektro, Fakultas Teknik, Universitas Udayana
Religion Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Analisis Sistem Pengenalan Wajah Berbasis Video Menggunakan Luxand FaceSDK N.G. Widana; W. Setiawan; N.M.A.E.D. Wirastuti
Jurnal SPEKTRUM Vol 3 No 2 (2016): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (167.136 KB)

Abstract

Sistem pengenalan wajah manusia merupakan salah satu bidang yang cukup berkembang dewasa ini, dimana sistem ini mampu diterapkan pada sistem keamanan ataupun sistem absensi. Pada penelitian ini membahas kinerja sistem pengenalan wajah berbasis video menggunakan Luxand FaceSDK berdasarkan jarak dan pose wajah. Hasil pengujian menunjukkan sistem mampu mengenali wajah 20 partisipan dengan baik pada jarak 0,5 meter dan 1 meter sebesar 100% menggunakan webcam ekternal dengan resolusi 640x480 VGA dalam keadaan wajah normal berdurasi 15 detik. Sedangkan pengujian berdasarkan pose wajah sistem mampu memberikan rata-rata nilai akurasi sebesar 50% dari sepuluh pose yang diujikan.
Prediksi Pengguna Teknologi LTE (Long Term Evolution) di Kota Denpasar IGB Alit Putra Wijaya; NMAE Dewi Wirastuti; Ngurah Indra ER
Jurnal SPEKTRUM Vol 2 No 1 (2015): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

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Abstract

Perkembangan teknologi informasi kian cepat dengan berbagai perubahan yang datang terus menerus menuntut untuk terus dilakukan berbagai kajian. Dengan dimulainya wacana 4G LTE yang digagas oleh 3rd Generation Partnership Project (3GPP) maka kajian yang lebih mendalam perlu dilakukan. Teknologi yang baru memiliki jumlah pengguna yang sulit untuk diprediksi yang jika tidak disiapkan maka akan berpengaruh pada sisi kapasitas. Untuk itu diperlukan prediksi pengguna LTE yang memadai. Penelitian menggunakan data jumlah penduduk dari Badan Pusat Statistik yang menggunakan metode asumsi dari beberapa negara yang telah mengimplementasikan teknologi LTE. Jumlah pengguna LTE tahun 2013 pada kota Denpasar adalah sebesar 2248 orang.
ANALISIS KUALITAS LAYANAN VIDEO CONFERENCE PADA JARINGAN WLAN 802.11g MENGGUNAKAN OPNET MODELER Yansen Andriyanto; Ngurah Indra ER; N.M.A.E.D Wirastuti
Jurnal SPEKTRUM Vol 2 No 3 (2015): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

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Abstract

Perkembangan jaringan Wireless Local Area Network (WLAN) adalah dengan ditetapkannya standar yang dikeluarkan oleh Institute of Electrical and Electronics Engineers (IEEE) yaitu WLAN IEEE 802.11g. Penelitian ini untuk menentukan kualitas layanan (Quality of Service) video conference pada jaringan WLAN 802.11g, sehingga dapat menjadi masukan untuk perancangan video conference. Berdasarkan hasil simulasi dapat disimpulkan pada perhitungan teoritis throughput maksimum WLAN 802.11g pada data rate 54 Mbps adalah 20,78 Mbps, bertambahnya jumlah client dan peningkatan frame rate berpengaruh terhadap peningkatan nilai bitrate dan packet loss.
ANALISA METODE SHANNON ENTROPY DAN DIFFERENTIAL EVOLUTION UNTUK KOMPRESI GAMBAR I Komang Adi Bayu Adnyana; I Made Oka Widyantara; NMAE Dewi Wirastuti
Jurnal SPEKTRUM Vol 8 No 2 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (463.27 KB) | DOI: 10.24843/SPEKTRUM.2021.v08.i02.p25

Abstract

One of the most important phases in image storage is compression. Most current imagecompression methods are spatial. In this article, we present an image compression techniquebased on Multi-level Thresholding. The grayscale images are divided into groups based on thenet probabilistic division. To determine the grouping uncertainty, Shannon Entropy is used.Optimization methods have also been added to obtain more optimal settings. DifferentialEvolution is an optimization technique. Image histogram is a graph that depicts the distributionof pixel intensity values of an image. Image compression performance measurement wasmeasured using FSIM (Feature Similarity Index Measure) and SSIM (Structural Similarity IndexMeasure).
ANALISA PENGARUH DATA RATE PADA MANET DENGAN MENGGUNAKAN ROUTING PROTOCOL AODV (REAKTIF) Anisa Widayanti; I Gusti Agung Komang Diafari Djuni; N.M.A.E Dewi Wirastuti
Jurnal SPEKTRUM Vol 6 No 1 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (278.26 KB) | DOI: 10.24843/SPEKTRUM.2019.v06.i01.p10

Abstract

Mobile Ad hoc Network (MANET) is a dynamic wireless mobile node network, without using network infrastructure such as limited power (because it uses batteries). Mobility of each node that is able to move in all directions, and autonomy of each node in determining its own route to forward the data plan. Therefore, in this study we will see the performance of MANET on IEEE 802.11 g WLAN with a data rate that is different from an AODV routing protocol. This simulation observes changes in data rates ranging from 1, 2.5 Mbps, using WLAN 802.11 g. For parameters used in the data rate starting from 1, 2, 5, Mbps using WLAN 802.11 g obtained the Package Loss value at a data rate of 5 Mbps by 0.98%, the highest value of the highest throughput was generated at a data rate of 1 Mbps of 313,715 bps, and the delay for the data rate of 5 Mbps was 0.0008 second.
OPTIMASI NIRKABEL LOCAL AREA NETWORK FAKULTAS TEKNIK KAMPUS SUDIRMAN UNIVERSITAS UDAYANA Komang Yuda Krisnawan; Nyoman Putra Sastra; N.M.A.E.D. Wirastuti
Jurnal SPEKTRUM Vol 5 No 1 (2018): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (888.547 KB) | DOI: 10.24843/SPEKTRUM.2018.v05.i01.p15

Abstract

One of the changes in the field of telecommunications is the use of wireless technology. Wireless technology is applied to computer networks better known as Wireless Local Area Network (WLAN). Network coverage quality measurements can be seen from categories of delay or suspension, excess queues on the network, increased traffic, and output results. By using Wi-Fi Analyzer and Ekahau software we get the Quality of Service (QoS) value to see how good the coverage of the existing wireless network is. The result of the measurement is analyzed to get the adjustment of the wireless area coverage formula so that it can find the maximum range used as a reference in placing the ideal access point. The addition of access point points is done on all buildings where at some point the area can not be reached as a whole.
ANALISA PERFORMANSI VIDEO STREAMING PADA JARINGAN WIRELESS REPEATER BERBASIS TEKNOLOGI 802.11n IGst Ngr PT. Adi S.P.; N. Indra; N.M.A.E. Wirastuti D.
Jurnal SPEKTRUM Vol 3 No 2 (2016): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

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Abstract

Penggunaan WLAN sebagai perpanjangan dari infrastruktur kabel LAN yang sudah ada menawarkan kenyamanan mobilitas bagi para pengguna terutama dalam lingkungan bisnis dan perusahaan. Penggunaan WLAN dapat diaplikasikan dalam video streaming dari sisi penerima saat menampilkan media tanpa harus menunggu keseluruhan file data dapat di terima disisi client. Tujuan penelitian ini untuk menunjukkan dampak konfigurasi terhadap traffik QoS video streaming pada jaringan wireless repeater berbasis teknologi 802.11n. Parameter yang dianalisa untuk me-nguji performansi jaringan wireless 802.11n pada topologi wireless repeater yaitu Delay, Jitter, Packet Loss dan Throughput. Sehingga mendapatkan nilai pada skenario di dalam ruangan tidak lebih baik dibandingkan skenario di luar ruangan bila dilihat dari nilai parameter performansi aplikasi video streaming hal tersebut terjadi akibat halangan yang terdapat pada skenario di dalam ruangan dan penurunan kualitas sinyal wifi akibat halangan tersebut.
ANALISIS UNJUK KERJA ZERO FORCING EQUALIZER PADA SISTEM OFDM MIMO R. A. Prayitno; N.M.A.E.D. Wirastuti; I.G.A.K.D.D. Hartawan
Jurnal SPEKTRUM Vol 5 No 1 (2018): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (315.312 KB) | DOI: 10.24843/SPEKTRUM.2018.v05.i01.p10

Abstract

Wireless network is one of the most important things in the development of telecommunication. However, the existing wireless technology has not been able to efficiently create a very high data rate because it was very sensitive to fading. Therefore, Orthogonal Frequency Division Multiplexing (OFDM) technology combined with MIMO (Multiple Input Multiple Output) transceiver system was used to gain more diversity and bandwidth efficiency. The propagation performed on the OFDM MIMO system was multipath propagation. To reduce Intersymbol Interference (ISI) was used Zero Forcing (ZF) equalizer which works by combining channel response and equalizer response itself to eliminate ISI. This study aims to determine the effect of Zero Forcing Equalizer on OFDM MIMO system using rayleigh fading channel and compared the result with OFDM MIMO STBC system. The research method used was simulation using MatLab R2015a. The simulation results showed that the performance of OFDM MIMO ZF system was worse than OFDM MIMO STBC system i.e BER vs EbNo simulation, eye diagram simulation, and constellation diagram simulation. The OFDM MIMO ZF system was required an Eb / No value more than 25 dB to achieve BER 10-4 while the OFDM MIMO STBC system only required an Eb / No value of 10.5 dB to achieve BER 10-4. The eye pattern generated by the OFDM MIMO ZF system was more closed and the dispersion of constellation signals away from the ideal point while OFDM MIMO STBC system displayed a more open eye pattern and the dispersion of its constellation signal closer to the ideal point. It indicated more ISI occurs in the OFDM MIMO ZF system than that in OFDM MIMO STBC system.
REDUKSI PEAK TO AVERAGE POWER RATIO (PAPR) PADA DFT-OFDM MENGGUNAKAN TEKNIK CLIPPING FILTERING IBGD. Dhyaksa; NMAED. Wirastuti; IMO. Widyantara
Jurnal SPEKTRUM Vol 1 No 1 (2014): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1368.488 KB) | DOI: 10.24843/SPEKTRUM.2014.v01.01.p01

Abstract

Orthogonal Frequency Division Multiplexing (OFDM) memecah data serialberkecepatan tinggi menjadi data paralel dengan kecepatan yang lebih rendah, kemudian data-datatersebut dibawa oleh subcarrier yang saling orthogonal. Kelemahan OFDM yaitu tingginyaperbandingan daya puncak terhadap daya rata-rata atau biasa disebut Peak to Average Power Ratio(PAPR). Tujuan penelitian ini adalah mereduksi nilai PAPR yang tinggi. Penelitian dilakukan padaDFT-OFDM tanpa maupun dengan menggunakan teknik clipping filtering. Clipping yang digunakanadalah classical clipping dan deep clipping. Clipping filtering bekerja dengan memotong keluaran dariIDFT yang dianggap melebihi threshold. Dari simulasi yang dilakukan, nilai PAPR saat CCDF = 10-3adalah 10,6 dB. Saat dilakukan proses classical clipping PAPR bernilai 4,1 dB sedangkan saatmengalami proses deep clipping sebesar 4,7 dB.
ANALISA THROUGHPUT JARINGAN 4G LTE DAN HASIL DRIVE TEST PADA CLUSTER RENON I Dw Gd Paramartha Warsika; N.M.A.E. Dewi Wirastuti; Pande Ketut Sudiarta
Jurnal SPEKTRUM Vol 6 No 1 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (250.074 KB) | DOI: 10.24843/SPEKTRUM.2019.v06.i01.p11

Abstract

The development of very rapid communication technology specifically on 4G networks. cannot be separated from various problems, one of which is the occurrence of traffic density which causes transmission data rate decline.Telecommunications services in particular throughput has increased access. From this problem, this paper studies the simulation results of 4G LTE network throughput compared to the results of the drive test on the renon cluster. From the simulation, it known that the coverage area of 1.31 km2 and the speed of data access are termed by the equipment user 4,000 kbps to 5,000 kbps. While the results of drive test analysis using G-NetTrack Pro software with dedicated method from the existing eNodeB AKABA_PL, MYAMIN_CR, and BUNDARANRENON_PL data. The average downlink obtained by users is 2 Mbps, distance 100 to 800 meters that can be drawn on each sector eNodeB. The parameters measured are RSRP, RSRQ, SINR and throughput. Analysis of the drive test results found parameters that affect access speed when downloading and several other factors. Furthermore, the parameters of the downlink throughput was compared to the simulation results with the measurement data in the field and from the comparison made the results are linear.
Co-Authors A. A. SG. Mas Karunia Maharani A. T. A Prawira Kusuma adi surya antara Aditya Dwipayana Agus Sukerta Anak Agung Kurnia Aditama Anisa Widayanti Arya Mertasana , Putu Arzalia Khairunnisa Yasmine Asa Arya Sudarman Asana, I Made Dwi Putra Ayuni Harianti Azmir, Azra Ariel Azra Ariel Azmir Azra Ariel Azmir CCW Emehel D. C. Khrisne D. C. Khrisne D.C. Khrisne Dewa Made Wiharta Dhyaksa, Ida Bagus Dharma Dipta, I Made Yogaswara Duman Care Khrisne Enrico Andriyanto F. L. H. Utomo Fajar Tri Prabowo Gde Made Budi Antara Gede Humaswara Prathama Gede Ogiana Gede Sastra Utara Gede Sukadarmika Gerson Feoh Hartawan, I Gusti Agung Komang Dlafari Djuni Hilmy Jawas I Dewa Made Bayu Atmaja Darmawan I Dw Gd Paramartha Warsika I G A Anom Semara Putra I G. A. K. Diafari Djuni Hartawan I Gede Agus Aditya Putra I Gede Agus Aditya Putra Aditya I Gede Eka Sanjaya I Gusti Agung Anom Semara Putra I Gusti Agung Gede Arya Kadyanan I Gusti Agung Komang Diafari Djuni Hartawan I Gusti Ngurah Priambadi I ketut Gede Darma Putra I Ketut Widi Arjana Yasa I Komang Adi Bayu Adnyana I Komang Surya Adinandika I M. A. Suyadnya I M. A. Suyadnya I Made Arsa Suyadnya I Made Oka Widyantara I Made Rai Putera Yasa I Made Ryan Handika I Made Yogaswara Dipta I N Satya Kumara I Nyoman Gunantara I Nyoman Suprapta Winaya I Putu Eka Giri Setya Kresnadi Putra I Putu Suryadharma I Wayan Diki Andriasmika I Wayan Kayun Wardana I.M.A. Suyadnya IBGD. Dhyaksa ICA Lukpratama Ida Ayu Laksmi Dewi Ida Bagus Darma Putra Ida Bagus Kade Dwi Suta Negara Ida Bagus Putu Adnyana IGB Alit Putra Wijaya IGst Ngr PT. Adi S.P. IPH Darmawan Is-Haka Mkwawa K.O Saputra Kadek Agus Mahabojana Dwi Prayoga Kadek Darmaastawan Khalid G. Samarah KO Saputra Komang Isabella Anasthasia Komang Oka Saputra Komang Tri Wahyuni . Komang Yuda Krisnawan Leovin Leovin Linawati Linawati . Linawati Linawati Lino Verlin Lino Verlin Luh Ika Dhivtyasari Suryani M Zatiar Erwan Kalam M. Ardi Fermanta Merliana, Ni Putu Eka MHD. Reza M.I. Pulungan Mkwawa, Is-haka Muhammad Iman Nur Hakim N.G. Widana N.K.W. Trisnawati Ngurah Agus Sanjaya ER Ngurah Indra ER Ni Made Anita Belinda Ni Made Erma Pratiwi Astiti Ni Putu Eka Apsari Yuniari Ni Putu Lintang Anggitiadewi Nyoman Arun Wiratama Nyoman Pramaita Nyoman Pramaita Nyoman Putra Sastra Nyoman Sumerta Yasa Pande Gede Wipradnyana Pebri Yeni Samosir Putra Adi Wibowo Putra Yudhanata Pratama Putu Arya Mertasana R. A. Prayitno R.S. Hartati R.S.E.C. Nesa Rezamal Ilham Samarah, Khalid G. Saputra, Komang Oka Setyohadi, Djoko Budiyanto T. Angrriawan T.B. Purwanto Vencysisca Jeane Risamena Verlin, Lino W. Setiawan Wayan Gede Ariastina Widyadi Setiawan Widyanto, I Putu Willy Sucipto Yansen Andriyanto Yoga Divayana Z Zamani Noor Zaky Zamani Noor “Prama Ade Prayitno