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All Journal Teknika Jurnal Sains Dan Teknologi (SAINTEKBU) Jurnal Teknik Ilmu dan Aplikasi Majalah Ilmiah Teknologi Elektro
Yoedy Moegiharto
Unknown Affiliation
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Library & Information Science Mechanical Engineering

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Kinerja OFDM-OSTBC Dengan Modulasi MQAM Dan MPSK Pada Kanal Rayleigh Yoedy Moegiharto, ; Ridho Hendra Yoga P.,
Teknika Vol 10, No 1 (2009)
Publisher : Teknika

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Abstract

Pada tulisan ini ditunjukkan kinerja sistem OSTBC-OFDM yang diterapkan pada jenis modulasi MQAM dan MPSK. Digunakan model STBC rate ½  dengan 4  buah antena pemancar dan 4 antena penerima kemudian dikombinasi dengan teknik OFDM dengan 4, 8 dan 16 sub-carrier. Kinerja sistem OFDM-OSTBC ditunjukkan untuk  kanal Rayleigh fading. Pada penerima diterapkan struktur sederhana dengan metode maximum likelihood decoder. In this paper is shown the performance of OSTBC-OFDM system with MQAM and MPSK modulation. STBC model uses rate ½ with 4 trasmit antennas and 4 receive antennas, is combined with OFDM techniques with 4, 8 and 16 sub-carriers. The performance of OSTBC-OFDM systems are shown in Rayleigh fading channel. Receiver uses simple structure with maximum likelihood methode.
THE GENETIC ALGORITHM APPLICATION FOR MEASURING THE REVERSE CHANNEL OPTIMATION PERFORMANCE WIRELESS DSCDMA NETWORK SYSTEM Haris Fadhilah; Yusak Yudianto; Yoedy Moegiharto; Wahjoe Tjatur
SAINTEKBU Vol 1 No 1 (2008)
Publisher : KH. A. Wahab Hasbullah University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (311.684 KB) | DOI: 10.32764/saintekbu.v1i1.29

Abstract

The third generation wireless DS-CDMA networks are expected to support a wide varietyof multimedia services such as high quality voice and data continuous (facsimile). The systemquality of DS-CDMA is shown as bit error probability values or bit error rate (BER) both voicechannel and continuous data channel. Bit error probability values are influenced by interferenceof the other users voice and data continuous (facsimile) .In the Final Project is made the genetic algorithm software for measuring the optimalsystem quality, specially for reverse channel. The optimal value result to explain the numberactive voice and data users that results minimum probability value on voice channel or datacontinuous (facsimile).
DESIGN SPREAD SPECTRUM COMMUNICATION SYSTEM SIMULATION (Software) Andy Soeseno; Yoedy Moegiharto; Arna Fariza
SAINTEKBU Vol 1 No 2 (2008)
Publisher : KH. A. Wahab Hasbullah University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (310.391 KB) | DOI: 10.32764/saintekbu.v1i2.79

Abstract

            In this paper was design direct sequence spread spectrum simulation program consist of include the program of pseudo noise code generator by using gold codes method, spreading and despreading program. The sequence of pseudo noise code generated in 7 chips for 5 bits binary data information and 15 chips for 4 bit binary data information. The program of spreading simulation can provides sequence of spread spectrum signal and the program of despreading can recovery the original information signal. Keyword : spreading , desprading, pseudo noise code, chip, gold codes.
DESIGNING AND MANUFACTURING THE CORRELATOR AND DECORRELATOR SIMULATIONS Ani Sulistyowati; Raida Tri W; Yoedy Moegiharto
SAINTEKBU Vol 1 No 2 (2008)
Publisher : KH. A. Wahab Hasbullah University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (182.103 KB) | DOI: 10.32764/saintekbu.v1i2.80

Abstract

Recently the CDMA communication system has been developed with an ability to keep the secret of the transmitted information and also immune to  interferences.            In a CDMA system every user has an identification code which are mutually independent (orthogonal). To prove the orthogonality of the codes the  correlation process is used.            In this final project, we simulate the correlation process by using the Hadamard-Walsh matrix codes. The correlation process that is used to prove the orthogonality will apply the XNOR calculation. The correlation processes consist of two i.e. autocorrelation and crosscorrelation in which autocorrelation process will always result in correlation coefficient that is larger than the crosscorrelation process.
Komunikasi Kooperatif D2D dengan Bantuan UAV Berbasis AF/DF Multi Relay dengan Dampak Hardware Impairment Annysa Aprilya; Meyra Chusna Mayarakaca; Arifin; Faridatun Nadziroh; Yoedy Moegiharto
Jurnal Teknik Ilmu dan Aplikasi Vol. 5 No. 1 (2024): Jurnal Teknik Ilmu dan Aplikasi
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jtia.v5i1.4820

Abstract

This work investigates the implementation of hybrid AF and DF relay protocols in D2D multi-relay wireless communication systems. To obtain system performance we propose four scenarios for using the AF and DF relay protocols and three S – R and R – D distance conditions that have an impact on system performance in terms of throughput values. From the simulation results it is concluded that the R – D distance will produce the highest SNR value which produces the best system throughput value compared to . The simulation results also prove that applying the AF relay protocol to all relays produces better SNR values ​​and better throughput values ​​than applying the DF relay protocol. Simulation results with the impact of hardware impairment (HI) levels show that system performance in the first scenario is actually worse than other scenarios when the κ value is above 0.1.
Eksperimen Gabungan Teknik Reduksi PAPR Dan Predistorsi Pada Sistem OFDM Menggunakan USRP M Wisnu Gunawan; Arifin Arifin; Yoedy Moegiharto; Anang Budikarso; Hendy Briantoro
Jurnal Teknologi Elektro Vol 22 No 2 (2023): (Juli - Desember) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2023.v22i02.P13

Abstract

In this paper, the performances of the joint technique of PAPR Reduction with ICF method and predistortion with inverse Saleh model on OFDM system are evaluated. The system’s performances at the receiver are presented by constellation nodes of QAM symbols From the experiment results can be shown that the predistorstion improves the system’s performance since the spreading of constellation nodes became smaller. While the performances of PAPR reduction technique are shown as the PAPR reduction values for clipping ratio (CR) values of 5, 4 and 3. The PAPR reduction values are 7,6 dB, 8,4 dB and 9,4 dB. And the predistortion technique can reduce the PSD gain of OFDM signal and linear high power amplifier of 30 dB.
Co-Authors Anang Budikarso Andy Soeseno Ani Sulistyowati Annysa Aprilya Arifin Arifin Arifin Arna Fariza Faridatun Nadziroh Haris Fadhilah Hendy Briantoro M Wisnu Gunawan Meyra Chusna Mayarakaca Raida Tri W Ridho Hendra Yoga P. Wahjoe Tjatur Yusak Yudianto