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All Journal International Journal of Electrical and Computer Engineering Humaniora Seminar Nasional Aplikasi Teknologi Informasi (SNATI) Jurnal Pendidikan dan Pengajaran Jurnal IKA Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Indonesian Journal of Electrical Engineering and Informatics (IJEEI) POSITIF Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Jurnal Organisasi Dan Manajemen Conference SENATIK STT Adisutjipto Yogyakarta Stabilita : Jurnal Ilmiah Teknik Sipil Fakultas Teknik Universitas Halu Oleo Kendari IJITEE (International Journal of Information Technology and Electrical Engineering) Indonesian Journal of Electrical Engineering and Computer Science Jurnal Gema Keperawatan Jurnal Seni dan Pembelajaran Jurnal Nasional Teknik Elektro dan Teknologi Informasi Gemakes: Jurnal Pengabdian Kepada Masyarakat Pancaran Pendidikan Teknomatika: Jurnal Informatika dan Komputer Journal Center of Excellent : Health Assistive Technology (CoE) Health Dynamics
I Wayan Mustika
Departemen Teknik Elektro Dan Teknologi Informasi Universitas Gadjah Mada
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Journal : International Journal of Electrical and Computer Engineering

 1 
Feasibility of Power Control for Multi-Channel User in Inter-Femtocell Network Anggun Fitrian Isnawati; Risanuri Hidayat; Selo Sulistyo; I Wayan Mustika
International Journal of Electrical and Computer Engineering (IJECE) Vol 6, No 4: August 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (362.207 KB) | DOI: 10.11591/ijece.v6i4.pp1685-1694

Abstract

The importance of power control feasibility is closely related to the direct implementation of the system, which is related to interference between users in the femtocell network and also related to the optimal use of power transmit that can create a long-lasting battery. Implementation of the feasibility of power control in this study is focused on the centralized femtocell network with a multi-channel user. The research method in this study is based on the use of feasible solution algorithms in power control by observing the output of power vector that should be valued non-negative, which means that it can be implemented. This result indicates that all of user can reach the specified target SINR. SINR users will increase when there are additional channels for user groups. The average power of user will also decrease while increasing the amount of provided channels. The greater number of users in a user group, the less value SINR can be obtained
Dithering Analysis in an Orthogonal Frequency Division Multiplexing-Radio over Fiber Link Fakhriy Hario P; Adhi Susanto; I Wayan Mustika; Sevia M Idrus; Sholeh Hadi P
International Journal of Electrical and Computer Engineering (IJECE) Vol 6, No 3: June 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (487.69 KB) | DOI: 10.11591/ijece.v6i3.pp1112-1121

Abstract

Nonlinearity is one major problem broadband communication faced on utilizing the high capacity of optical fibers. That is due to scattering  phenomenon, which results in the deviations of wavelengths and energies. The dithering method is applied in the attempt to reduce those scatterings. In this paper, we propose the performance of a dithering technique based new system OFDM-RoF using two modulator scheme and coherent detection to alleviate the characteristics nonlinearity applied on the system. The dithering technique inputs signal externally to the signal processing systems to eliminate the effects of nonlinearity. Here, we report the performance of a dithering technique based on the OFDM-RoF, the results our experiment showed that the applied dithering with 16 QAM modulation can make the system more reliable and increases  the power level 1.55% with 193.1 THz, 2% with  100 THz and 1.99% ~ 200 THz, the best condition are with fd < fc. However, all condition close proximity in the parameters OLP (optical launch power), BER and SER measurement. The result demonstrated a high efficiency and good power in which the OLP operated 6.396 dBm / 4.361 E-3 W~fd 200 THz, 3.578 dBm / 2.279 E-3 W~fd 193.1 THz and 6.420 dBm / 4.3384 E-3 W~100 THz. The best BER value is achieved at 0.33 and SER 0.78 at 5 km~fd 100 THz, 0.33 and 0.768 for 10 km~fd 193.1 THz, 0.478 and 0.92 for 50 km~fd 193.1 THz.
CNR and BER Ranges for the DVB-T2 Reception-Success Budi Setiyanto; Risanuri Hidayat; I Wayan Mustika; Sunarno Sunarno
International Journal of Electrical and Computer Engineering (IJECE) Vol 7, No 6: December 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (195.794 KB) | DOI: 10.11591/ijece.v7i6.pp3727-3734

Abstract

DVB-T2 (Digital Video Broadcasting Terrestrial Second Generation) reception requires a sufficient quality of the received signal. CNR (carrier-to-noise ratio) and BER (bit-error-rate) are two of quantities describing the quality. This paper presents the range of each quantity providing a successful reception based on real data obtained by field-measurements. This data was collected from MO (mobile-outdoor) and SI (stationary-indoor) receiving-systems capturing signal sent by some on-air trial transmitters broadcasting services focused on the fixed-receivers. The result indicated that the successful and failed receptions were split into two quite separated (concentrated) ranges of post-decoded BER and therefore a boundary distinguishing them could be prominently defined. In contrast, they were spread in a wide common range of CNR and pre-decoded BER. Furthermore, the boundary that corresponded to this last quantity was ambiguous. In the case of MO reception as numerical examples, the two split ranges of post-decoded BER were less than about 10-5 and more than about 2.7 × 10-4 for the successful and failed receptions, respectively, whereas CNR as high as about 14 dB could be viewed as a soft boundary distinguishing these both reception-success conditions.
Performance Analysis of Digital Modulation for Coherent Detection of OFDM Scheme on Radio over Fiber System Fauza Khair; Fakhriy Hario P; I Wayan Mustika; Budi Setiyanto
International Journal of Electrical and Computer Engineering (IJECE) Vol 6, No 3: June 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1811.147 KB) | DOI: 10.11591/ijece.v6i3.pp1086-1095

Abstract

Radio over fiber (RoF) system with the coherent detection offers high linearity for the transparent transport of high-frequency microwave signals, and better receiver sensitivity compared with intensity-modulated direct detection systems. The purpose of this paper is to analyze the performance of digital modulation for coherent detection of orthogonal frequency division multiplexing (OFDM) scheme on RoF system at 10 Gbps up to 100 km fiber length. The results show that coherent detection of OFDM-RoF system with 16 quadrature amplitude modulation (16-QAM) has the value of  bit error rate (BER) and the symbol error rate (SER) is very low and its constellation is better compared with other modulation formats (4-QAM, quadrature phase shift keying (QPSK), 8-PSK and 16-PSK), which BER 16-QAM is 0.053 and SER is 15.7%. The results also show that BER value of 4-QAM and QPSK relatively similar to fiber length variations. In general, an increasing value of the BER and SER for each modulation format are almost equal to the fiber length of 60-70 km (Region I and II). However, there is a significant increase in the value of BER in fiber length of 80-100 km (Region III. A and III. B) for the modulation of 4-QAM, QPSK, 8-PSK, and 16-PSK.
Co-Authors Abdul Kadir Achjar, Komang Ayu Henny Adhi Susanto Agus Bejo, Agus Agus Sri Lestari Aidin Najihi Ajib Setyo Arifin Alifia Fitri Utami Anggun Fitrian Isnawati Aswad, Nini H Bagus Made Sabda Nirmala Bimo Sunarfri Hantono Budi Setiyanto Budi Setiyanto Budi Setiyanto Budi Setiyanto Dewi, Ni Nyoman Astika Dewi, Ni Putu Diah Trisna Dewintasari, Ni Nyoman Paramitha Effan Najwaini Eliada Herwiyanti Fakhriy Hario P Fauza Khair Fitri Yuli Zulkifli Fitriah Fitriah Gama, I Ketut Gama, Ketut Gusti Ayu Harini, Gusti Ayu Harini, I Gusti Ayu Hasimkan Hasimkan, Hasimkan Henny Achjar, Komang Ayu I Gede Astawan I Ketut Suastika I Putu Gede Adiatmika I Wayan Candra I Wayan Suardana Iswandi Iswara, Ni Putu Ayu Astri Prana Kasih, Tota Pirdo Kumalasari, Ni Putu Putri M. B. Fathinah Hanun Masdiana Masdiana Maulana, Eka Mokhammad Nurkholis Abdillah Muhammad Sonnie Bestian Ngurah, I Gusti Ketut Gede Ngurah, IGK Gede Nini Hasriyani Aswad NLP Yunianti SC, NLP Yunianti Nur Azizah Padmi, Luh Sri Anggayoni Julia Paramita, Diah Pradnya Permana, Ody Tegar Permana, Ody Tegar Pramesti, Kadek Diah Purnama, Tedi R. A.T. Kuswardhani Risanuri Hidayat Sari, Eni Sevia Satriawati, Ni Nyoman Ayu Selo Sulistyo, Selo Sevia M Idrus Sholeh Hadi P Sigit Pambudi Sudiantara, I Ketut Sudiantara, Ketut sumirta, I Nengah Sunarno Sunarno Sunarno Sunarno Sunarno Susi Wendhaningsih Tahta Dwi Putra Umran Sarita, Umran Wardani, Duati Wardani, Duati Widyawan Wisnu Kartika