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All Journal International Journal of Electrical and Computer Engineering Seminar Nasional Aplikasi Teknologi Informasi (SNATI) Jurnal Simetris TELKOMNIKA (Telecommunication Computing Electronics and Control) Sinergi Journal of ICT Research and Applications Jurnal Teknologi Elektro Proceeding of the Electrical Engineering Computer Science and Informatics InComTech: Jurnal Telekomunikasi dan Komputer Techne : Jurnal Ilmiah Elektroteknika Jurnal Elektronika dan Telekomunikasi Jurnal Abdi Masyarakat (JAM) Jurnal Ilmu Teknik dan Komputer Indonesian Journal of Electrical Engineering and Computer Science International Journal of Advanced Technology in Mechanical, Mechatronics and Material (IJATEC) Journal of Telecommunication, Electronics and Control Engineering (JTECE) Journal of Integrated and Advanced Engineering (JIAE) Jurnal Impresi Indonesia Journal of Informatics and Communication Technology (JICT) Jurnal Rekayasa elektrika Molekul: Jurnal Ilmiah Kimia Journal of Informatics and Communication Technology (JICT)
Mudrik Alaydrus
Department Of Electrical Engineering, Faculty Of Engineering, Universitas Mercu Buana, Jakarta
Religion Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences

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Reconstruction of Planar Multilayered Structures using Multiplicative-Regularized Contrast Source Inversion Mudrik Alaydrus; Said Attamimi
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 11, No 3: September 2013
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v11i3.1138

Abstract

 There is an increasing interest to have an access to hidden objects without making any destructive action. Such non-destructive method is able to give a picture of the inner part of the structure by measuring some external entities. The problem of reconstructing planar multilayered structures based on given scattering data is an inverse problem. Inverse problems are ill-posed, beside matrix inversion tools, a regularization procedure must be applied additionally. Multiplicative regularization was considered as an appropriate penalty method to solve this problem. The Gauss-Newton inversion method as an optimization procedure was used to find the permittivity values, which minimized some cost functions. Several dielectric layers with different thickness and profiles were observed. Some layers needed more discretization elements and more iteration steps to give the correct profiles. 
Efficiency of Wireless Power Transfer System with PWM Methode as Rectifier on Receiver Zuansah Rachmat Munggaran; Mudrik Alaydrus
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 16, No 4: August 2018
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v16i4.8046

Abstract

One part of the wireless power transfer system is rectifier, where the energy which received by the receiver conditioned according to the device character. While devices with direct current as a wave form of electrical energy is commonly used. Conventional rectifier was using half wave or full wave circuit where uses diode circuit, capacitor and transformer as filter. The disadvantage of the system is reactive power and harmonization. We proposed the pulse width modulation because PWM could enhanced power factor value on an AC voltage source system with 50 Hz frequency. The main focus on which this study was based was to derive efficiency values from pulse width modulation utilization in the rectification process while the frequency work at 5 MHz and highest power at 54.48 Watt, and compare this reasearch with published research for similar systems. To achieve the objectives of this study then performed design and build system, measurement and analysis of the value of system efficiency. The results of the research obtained the highest value of efficiency at 81%.
Hierarchical Gaussian Scale-Space on Androgenic Hair Pattern Recognition Regina Lionnie; Mudrik Alaydrus
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 15, No 1: March 2017
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v15i1.5381

Abstract

Androgenic hair pattern stated to be the new biometric trait since 2014. The research to improve the performance of androgenic hair pattern recognition system has begun to be developed due to the problems that occurred when other apparent biometric trait such as face is hidden from sight. The recognition system was built with hierarchical Gaussian scale-space using 4 octaves and 3 levels in each octave. The system also implemented the equalization process to adjust image’s intensity by using histogram equalization. We analyzed 400 images of androgenic hair in the database that were analyzed using 2-fold and 10-fold cross validation and Euclidean distance to classify it. The experimental results showed that our proposed method gave better performance compared to previous work that used Haar wavelet transformation and principal component analysis as the main method. The best recognition precision was 94.23 % obtained from the base octave with the third level using histogram equalization and 10-fold cross validation.   
Transmission of Real-time Video Signal with Interference Density and Human Traffic Rizal Broer Bahaweres; Oki Teguh Karya; Mudrik Alaydrus
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 13, No 4: December 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v13i4.2738

Abstract

The use of mobile phone as a communication tool so rapidly increase, as well as various types of functions therein. Among of the many applications on the mobile phone, which are used skype android-based for teleconferencing via mobile phone. Things can not be separated from these applications is the need of qualified internet network access for these applications can be felt up function. One of the network access to the Internet is widely used today's society is a wi-fi network. Access to the Internet does not always provide the best performance, this is due to many factors, one of which is the presence of interference. In this study, we tested transmission of video signals in real-time using an application skype on the mobile phone. Skype run on wi-fi network, which is influenced by the presence of interference or objects such as human traffic in the network. Wireshark were used to obtain data reliability wi-fi network, known as QoS. While evalvid used to obtain the data QoE restricted only get the data PSNR (Peak Signal To Noise Ratio) and MSE (Mean Square Error).
A low cost electromagnetic sensor for detecting holes in metallic sheet Galang P. N. Hakim; Ahmad Firdausi; Mudrik Alaydrus
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 17, No 5: October 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v17i5.12684

Abstract

Unwanted hole in metal sheet that use for vehicle body or structure is proved dangerous situation. To prevent disaster this hole needs to be found before its installation, or other wise it will be time and money consuming once its found when already finished installation. Therefore, an inspection using sensor for metal sheet is recommended to prevent this problem. In this paper, we proposed a new sensor using radio wave propagation to detect holes in metal sheet. We propose to use RSSI methods to detect hole based on electromagnetic wave propagation signal strength. Using this method we success to detect 8mm hole diameter in metal sheet with 1mm thickness. Using this method, we transmit electromagnetic wave energy at about 20 dBm, and we receive with average -27.53 dBm for iron sheet and -23.13 dBm for aluminum sheet.
Hybrid Methods in Designing Sierpinski Gasket Antennas Mudrik Alaydrus
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 8, No 3: December 2010
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v8i3.624

Abstract

 Sierpinki gasket antennas as example of fractal antennas show multiband characteristics. The computer simulation of Sierpinksi gasket monopole with finite ground needs prohibitively large computer memory and computational time. Hybrid methods consist of surface integral equation method and physical optics or uniform geometrical theory of diffraction is expected to alleviate this computational burdens. The full hybridization of the different methods with modifying the incoming electromagnetic waves in case of hybrid method surface integral equation method and physical optics and modification of the Greens function for hybrid method surface integral equation method and uniform geometrical theory of diffraction plays the central role in the observation. A comparison of simulation results of these different methods and are given measurements of a groups of three Sierpinksi gasket antennas are presented. The multiband characteristics of the antennas are observed with some reduction and enhancement of resonances.
ANALISIS KINERJA VOIP CLIENT SIPDROID DENGAN MODUL ENKRIPSI TERINTEGRASI Rizal ”Broer” Bahaweres; Mudrik Alaydrus; Abdi Wahab
Seminar Nasional Aplikasi Teknologi Informasi (SNATI) 2012
Publisher : Jurusan Teknik Informatika, Fakultas Teknologi Industri, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Jumlah pengguna VoIP di Indonesia masih kecil sekali, walaupun cost yang ditawarkan oleh VoIP lebih kecil dibandingkan dengan menggunakan telepon berpulsa. Salah satu alasannya adalah keamanan yang diberikan oleh penyedia layanan VoIP yang masih kurang. Pengguna VoIP belum mendapat layanan keamanan yang dapat menjamin keamanan komunikasi. Penelitian ini mencoba untuk mengamankan komunikasi antara pengguna VoIP dengan menggunakan modul enkripsi yang diintegrasikan dengan VoIP client Sipdroid yang berjalan di smartphone Android. Hal ini dimungkinkan oleh pengguna VoIP karena hanya VoIP client yang dapat diakses oleh pengguna VoIP. Hasil yang diperoleh setelah dilakukan integrasi dengan modul enkripsi menggunakan tiga buah skema enkripsi yaitu AES, DES, dan RC4, Sipdroid mampu menahan serangan pasif dari penyadapan informasi ( eavesdropping ) selama terjadi komunikasi. Dan hasil dari pengukuran QoS terdapat peningkatan delay sebesar 0.01 ms dan tidak terjadi perubahan yang signifikan terhadap througput dan packet loss, untuk throughput yang dihasilkan berkisar di 78 kbps, dan untuk packet loss rata-rata adalah 0.8 %. Akan tetapi terdapat noise yang mengikuti komunikasi pada Sipdroid yang terintegrasi dengan modul enkripsi akibat skew gelombang dari penambahan waktu proses ketika enkripsi.
SISTIM LONG TERM EVOLUTION (LTE) PADA SELULER - TEKNOLOGI DAN APLIKASI Hamzah Hilal; Mudrik Alaydrus
Jurnal Abdi Masyarakat (JAM) Vol 5, No 1 (2019): JAM (Jurnal Abdi Masyarakat) - September
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (247.876 KB) | DOI: 10.22441/jam.2019.v5.i1.010

Abstract

Perkembangan teknologi komunikasi wireless dengan kecepatan data yang tinggi didorong oleh tuntutan pengguna komunikasi data yang terus membesar. Kapasitas sistim yang ditandai dengan jumlah data yang dikirimkan dalam setiap detiknya bisa diperbesar dengan memperbesar bandwidth dari sistim komunikasi ini. Sistim komunikasi wireless generasi keempat 4G Long Term Evolution (LTE) memberikan solusi kecepatan data yang tinggi dengan teknik OFDMdan MIMO.
KONTRIBUSI KERUGIAN AKIBAT SAMBUNGAN PADA SALURAN TRANSMISI SERAT OPTIK SINGLE MODE Slamet Riyadi; Mudrik Alaydrus
Simetris: Jurnal Teknik Mesin, Elektro dan Ilmu Komputer Vol 7, No 1 (2016): JURNAL SIMETRIS VOLUME 7 NO 1 TAHUN 2016
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (635.919 KB) | DOI: 10.24176/simet.v7i1.498

Abstract

Serat optik merupakan media transmisi yang banyak digunakan untuk penunjang jaringan internet berkecepatan tinggi. Pada serat optik sebagai media transmisi terdapat berbagai macam rugi-rugi, diantaranya : Rugi-rugi penyebaran Rayleigh, Rugi-rugi penggandengan, rugi-rugi penyambungan, rugi- rugi pembengkokan dan rugi-rugi redaman pada konektor. Pada tulisan ini dilakukan penelitian tentang rugi-rugi sambungan dan analisa model sambungan untuk jenis serat mode tunggal (single mode). Penelitian menggunakan alat Splicer Machine, dengan tampilan berupa nilai perkiraan rugi-rugi sambungan dan tampilan visual kondisi sambungan. Analisa dilakukan dengan memanfaatkan formula yang telah dikembangkan oleh Marcus dan Teori Fresnell. Hasil dari penelitian diperoleh bentuk parametrik grafis sambungan yang sama untuk beberapa jenis serat yang dipergunakan pada penelitian dan ditemukan cacat pada sambungan yang mengakibatkan kehilangan sebagian energi pada titik sambungan. Kata kunci: fusi, rugi-rugi, serat optik, splices.
STUDI ANALISA TRANSFER RATE MULTIPROTOCOL LABEL SWITCHING (MPLS) PADA MEDIA AKSES WIRELESS DAN WIRELINEDI PT. BANK COMMONWEALTH (PTBC) Meydita Erliana Pardila; Mudrik Alaydrus
Jurnal Teknologi Elektro Vol 6, No 2 (2015)
Publisher : Electrical Engineering, Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (463.438 KB) | DOI: 10.22441/jte.v6i2.797

Abstract

Proses transfer dan mendapatkan data yang lambat dan membutuhkan waktu yang lama menyebabkan user sering mengeluh dengan lambatnya kecepatan jaringan yang ada. PT. Bank Commonwealth (PTBC) sangat memerlukan kecepatan transfer data, selain itu kecepatan transfer data menjadi masalah yang sering dialami dalam jaringan. Laporan ini dibuat untuk mengetahui performa transfer rate dan kualitas antara media akses wireless dan wireline pada teknologi Multiprotocol Label Switching (MPLS) di PT. Bank Commonwealth (PTBC). Kinerja jaringan yang di uji adalah delay dan packet loss pada hasil test ping serta menguji kapasitas bandwidth yang disewa. Pengujian dilakukan pada lima cabang yang menggunakan akses wireless dan lima cabang yang menggunakan akses wireline selama lima hari pada saat office hour dannon office hour. Dari hasil pengujian terlihat bahwa media akses wireline lebih baik transfer rate-nya dan lebih stabil apabila dibandingkan dengan media akses wireless.Kata Kunci: Transfer Rate, MPLS, wireless, wireline, delay, packet loss, ping.
Co-Authors Abdi Wahab Abdi Wahab Abdi Wahab Abdi Wahab Abdi Wahab Adik Susilo Wardoyo Agus Dendi Rochendi Ahmad Firdausi Ahmad Syadidu Rosyadi Andi Adriansyah Andika Muharam Andrias Izaac Latupapua Audi Nantan Beny Nugraha Candra Kurniawan Danang Sunandar Darmanik, Sis Yasin Dian Widi Astuti, Budi Irawan Prima Putra, Dian Widi Astuti, Ellisa Agustina Erfan Handoko Fanda Lyta Suzanayanti Fariz Zikrulhaq Yulfinov Firhan Fathurahman Furqan Furqan Galang P. N. Hakim Galang Persada Nur Hakim Ghoshal, Sib Krishna Hamzah Hilal Haziel Latupapua Indra Dermawan Intan Wahyuni Inu Manggolo Lukman Medriavin Silalahi Lusi Damayanti Lydia Vintari Majid, Huda A Makarim, Fakhri Zaki Marnel, Sonfia Putra Marza Ihsan Marzuki Meydita Erliana Pardila Mochamad Miftakhul Huda Muhammad Sayidi Muhtar Muhtar Muhtar Muhtar Mukhtar Effendi Muslim Muslim Muslim Muslim Muslim, Muslim Muzammil Jusoh Nurafifah Sirait Oki Teguh Karya Oktavia, Maharani Purwo Panggalih Gentayu Putri Wulandari RAHAYU, FAJAR Regina Lionnie Reka Pahlevi Reza Farizqi Rio Mubarak Rizal Broer Bahaweres Rizki Ramadhan Putra Rizky Citra Ramadhan Rochendi, Agus Dendi Said Attamimi Said Attamimi Setiyo Budiyanto Sianturi Tigor Franky Devano Sis Yasin Darmanik Slamet Riyadi Slamet Riyadi Taufik Hidayat Thomas Eibert, Thomas Toni Ismanto Trie Maya Kadarina Umaisaroh Umaisaroh Veronica VERONICA VERONICA Wahju Sediono Wahyu Tri Cahyanto Wahyu Widanarto, Wahyu Wardoyo, Adik Susilo Widi Prasetyo Yohanes Bayu Kristanto Zuansah Rachmat Munggaran Zulkarnaen Akbar Zulkarnaen Akbar, Zulkarnaen