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All Journal International Journal of Electrical and Computer Engineering Kitektro Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi)

Hubbul Walidainy

Universitas Syiah Kuala

Author-ID : 4116881

Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering

Published : 6 Documents Claim Missing Document

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Articles

Design of 8-point DFT based on Rademacher Functions Zulfikar Zulfikar; Hubbul Walidainy
International Journal of Electrical and Computer Engineering (IJECE) Vol 6, No 4: August 2016
Publisher : Institute of Advanced Engineering and Science

This paper presents a new circuit design for 8-point DFT algorithm based on product of Rademacher functions. The design has been adopted from the famous 8-point DFT decimation in time which is mainly constructs of two 4-point and four 2-point DFTs. However, the operation of the design circuit is different. It utilized the advantage of Rademacher functions simplicity. Therefore, the proposed design is constructed form the previous design 4-point DFT which is based on product of Rademacher functions [6]. Some analysis upon number types and internal connections to achieve a more efficient circuit have been conducted. As a result, instead of four, the proposed design requires only three 2-point DFT. Several output results of the design DFT have been removed since they are equal in terms of magnitude, two negative circuit are required as a compensation. Moreover, the previous 4-point DFT has been replaced to the efficient one. This circuit is special designed for non stand alone used, the circuit must be integrated inside the proposed 8-point DFT.

An Improved Design of Linear Congruential Generator based on Wordlengths Reduction Technique into FPGA Hubbul Walidainy; Zulfikar Zulfikar
International Journal of Electrical and Computer Engineering (IJECE) Vol 5, No 1: February 2015
Publisher : Institute of Advanced Engineering and Science

This paper exposes an improved design of linear congruential generator (LCG) based on wordlengths reduction technique into FPGA. The circuit is derived from LCG algorithm proposed by Lehmer and the previous design. The wordlengths reduction technique has been developed more in order to simplify further circuit. The proposed design based on the fact that in applications only specific input data were used. Some nets connections between blocks of the circuit are ignored or truncated. Simulations either behavior or timing have been done and the results is similar to its algorithm. Four best Xilinx chips have been chosen to extract comparison data of speed and occupied area. Further comparison of occupied area in terms of flip-flop and full adder has been made. In general, the proposed design overcome the previous published LCG circuit.

SIMULASI ANTENA MIKROSTRIP RECTANGULAR PATCH ARRAY EMPAT ELEMEN UNTUK PENERIMA FPV 5,8 GHZ PADA WAHANA UAV Ferry Ferry; Syahrial Syahrial; Hubbul Walidainy; Ahmadiar Ahmadiar
Jurnal Komputer, Informasi Teknologi, dan Elektro Vol 6, No 2 (2021)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/kitektro.v6i2.21431

Antena merupakan faktor utama pada sistem First Person View (FPV) untuk mentransmisi video secara real time dari Unmaned Aerial Vehicle (UAV) ke pengguna di Ground Control Station (GCS). Penelitian ini bertujuan untuk merancang antena mikrostrip rectangular patch array empat elemen menggunakan teknik pencatu Line Feed untuk penerima FPV 5,8 GHz, metode yang dipakai adalah simulasi dengan software Advanced Design System (ADS). Bahan yang digunakan Epoxy fiberglass FR4, ketebalan (h) = 1,6 mm, konstanta dielektrik (εr) = 4,5, dan Loss tangent = 0,018. Berdasarkan hasil simulasi diperoleh nilai return loss = -23,018 dB, VSWR = 1,152, gain = 9,442 dBi, bandwidth = 284 MHz serta memiliki pola radiasi directional.

ANALISIS QUALITY OF SERVICE (QOS) JARINGAN INTERNET PADA WEBSITE E-LEARNING UNIVIERSITAS SYIAH KUALA BERBASIS WIRESHARK Andi Risky Maulana; Hubbul Walidainy; Muhammad Irhamsyah; Fathurrahman Fathurrahman; Akhyar Bintang
Jurnal Komputer, Informasi Teknologi, dan Elektro Vol 6, No 2 (2021)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/kitektro.v6i2.22284

Para penyedia layanan informasi atau Internet Service Provider (ISP) akan berusaha untuk memberikan segala upaya demi kepuasan para pelanggan agar dapat mengakses internet dengan nyaman. Dengan adanya internet, user dapat mengakses website yang diinginkan. Website e-Learning Universitas Syiah Kuala merupakan sebuah website yang dapat dikunjungi oleh mahasiswa dan dosen di Universitas Syiah Kuala untuk keperluan pembelajaran. Penelitian ini ditujukan untuk menganalisis Quality of Service (QoS) jaringan internet pada website e-Learning USK. Quality of Service (QoS) dari website e-Learning USK dapat di analisis dengan menggunakan Wireshark. Dengan adanya Wireshark dapat memudahkan untuk memperoleh nilai parameter dari throughput, packet loss, dan Delay. Nilai parameter yang dibandingkan ialah dari 3 (tiga) provider yang berbeda. Hasil dari penelitian ini adalah provider Telkomsel merupakan provider yang direkomendasikan saat mengakses website e-Learning Universitas Syiah Kuala, karena nilai Quality of Service (QoS) yang dihasilkan lebih unggul dibandingkan provider lainnya. Provider Telkomsel memperoleh nilai throughput tertinggi dibandingkan provider lain, yaitu senilai 1.823,20 kb/s. Nilai packet loss yang diperoleh lebih unggul dibandingkan provider lain, hanya mengalami sekali packet loss senilai 0,02%. Nilai delay yang diperoleh sangat bagus karena nilai yang dihasilkan 150 ms.

PERANCANGAN DAN PENGUJIAN ANTENA MICROSTRIP CIRCULAR PATCH ARRAY DUA ELEMEN UNTUK APLIKASI WIMAX 2,3 GHZ Fauzan Akbarrizky; Rizal Munadi; Hubbul Walidainy
Jurnal Komputer, Informasi Teknologi, dan Elektro Vol 2, No 4 (2017)
Publisher : Universitas Syiah Kuala

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

Banyak perangkat yang digunakan didalam sistem komunikasi nirkabel saat ini, salah satunya merupakan suatu perangkat yang dapat memancarkan serta menerima gelombang elektromagnetik berupa informasi yang akan dikirim dan diterima oleh perangkat lainnya yang disebut antena. Salah satu jenis antena adalah antena microstrip. Antena mikrostrip array dibuat agar memiliki bandwidth dan gain yang lebih besar dibandingkan dengan antena mikrostrip tunggal. Didalam penelitian ini diulas bagaimana merancang, menganalisis dan menguji antena microstrip patch circular array dua elemen untuk aplikasi WiMAX 2,3 GHz. Pada perancangan ini antena microstrip dibuat dengan bahan Epoxy Fiberglass FR-4 serta dengan teknik pencatuan Microstrip Line Feed. Simulator yang digunakan dalam perancangan antena adalah software Advanced Design System (ADS) sedangkan pengujian alat menggunakan bantuan HAMEG HMS3010. Pada penelitian ini ditunjukkan bahwa perancangan dan pengujian antena microstrip yang dilakukan telah memenuhi syarat untuk digunakan pada frekuensi WiMAX 2,3 GHz.Kata Kunci— Antena, Antena Microstrip, Patch Circular, WiMAX

Sybil Attack Prediction on Vehicle Network Using Deep Learning Zulfahmi Helmi; Ramzi Adriman; Teuku Yuliar Arif; Hubbul Walidainy; Maya Fitria
Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Vol 6 No 3 (2022): Juni 2022
Publisher : Ikatan Ahli Informatika Indonesia (IAII)

Vehicular Ad Hoc Network (VANET) or vehicle network is a technology developed for autonomous vehicles in Intelligent Transportation Systems (ITS). The communication system of VANET is using a wireless network that is potentially being attacked. The Sybil attack is one of the attacks that occur by broadcasting spurious information to the nodes in the network and could cause a crippled network. The Sybil strikes the network by camouflaging themselves as a node and providing false information to nearby nodes. This study is conducted to predict the Sybil attack by analyzing the attack pattern using a deep learning algorithm. The variables exerted in this research are time, location, and traffic density. By implementing a deep learning algorithm enacting the Sybil attack pattern and combining several variables, such as time, position, and traffic density, it reaches 94% of detected Sybil attacks.

Co-Authors Adriman, Ramzi Ahmadiar Ahmadiar Akhyar Bintang Ali Djamhuri Andi Risky Maulana Fathurrahman Fathurrahman Fauzan Akbarrizky Ferry Ferry Maya Fitria Muhammad Irhamsyah Rizal Munadi Syahrial Syahrial Teuku Yuliar Arif Zulfahmi Helmi Zulfikar Zulfikar

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