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Journal : Jurnal INFOTEL

Rancang Bangun Layer Fisik Visible Light Communication Pada Sistem Transmisi Audio Syifaul Fuada; Trio Adiono
JURNAL INFOTEL Vol 9 No 3 (2017): August 2017
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v9i3.288

Abstract

Kini, fungsi LED tidak hanya sebagai penerangan saja, melainkan dapat dimanfaatkan sebagai media komunikasi. Teknologi ini lazim disebut sebagai komunikasi cahaya tampak atau VLC, yang mana telah mulai diaplikasikan pada area-area yang rentan gelombang elektromagnetik seperti rumah sakit, kabin pesawat, bandara, markas militer dan lain sebagainya. Media yang umumnya dijadikan objek transmisi data adalah berupa gambar, video, audio (musik), teks, bahkan paket data untuk keperluan browsing internet. Penelitian ini mengimplementasikan sistem VLC yang berfokus pada layer fisik, yakni pada bagian Analog Front-End (AFE). Sistem yang dirancang terdiri atas modul AFE transmitter sebagai modulator dan AFE receiver sebagai demodulator. Rancangan AFE transmitter mengadopsi prinsip dari modul Bias-T, dengan fungsi yang sama namun memiliki keunggulan pada sisi low-cost. Sedangkan pada bagian AFE receiver, terdapat modul DC-offset remover yang berfungsi untuk mereduksi sinyal DC dari ambient light. Hasil demonstrasi menunjukkan bahwa sistem secara fungsional dapat digunakan untuk transmisi sinyal audio via cahaya tampak dan secara langsung ditampilkan ke loudspeaker yang mana pengamatan dilakukan secara langsung dengan membandingkan amplitude sinyal input ke LED driver dengan sinyal output dari stage terakhir dari AFE receiver. Berdasarkan pengujian dapat ditunjukkan bahwa bandwidth optimum dari AFE transceiver adalah dalam rentang 50 kHz sampai 450 kHz (referensi redaman pada frekuensi cut-off = -3 dB) dan jarak maksimum transmisi data adalah 40 cm dengan sudut elevasi penerimaan sebesar 0 derajat
A Custom Firmware and Lightweight Battery System Design for Portable RFID Reader Trio Adiono; Hans Kasan; Suksmandhira Harimurti; Farkhad Ihsan Hariadi
JURNAL INFOTEL Vol 10 No 2 (2018): May 2018
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v10i2.366

Abstract

Small to large-scale companies mostly have warehouses to store their inventories, and to manage them a warehouse management system is required. A low cost, yet powerful solution is using a portable RFID reader. In RFID portable reader system, there are three components which are the most essential, i.e. host and its firmware, RF module, and battery.. In this paper, we propose a custom firmware design, which is compatible with different RFID reader chips or development boards. The custom firmware is designed to work by triggering the execution of Electronic Product Code (EPC) Generation 2 protocol standard command on the reader chip. Hence, the firmware can fully utilize the reader chip’s command. Furthermore, a lightweight battery system is also designed. Targeting for a high mobility use, a very lightweight Li-Pro battery, weighing of only 0.1 kg, is used for the battery system. It is also able to work at long operating hour up to 4 hours.
Design of AXI4-Stream based Modulator IP Core for Visible Light Communication System-on-Chip Erwin Setiawan; Trio Adiono
JURNAL INFOTEL Vol 10 No 2 (2018): May 2018
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v10i2.367

Abstract

In this paper, the design of AXI4-Stream based modulator IP core for Visible Light Communication is reported. The modulator IP core conforms to the AXI4-Stream protocol standard, which is widely used in System-on-Chip (SoC) design. There are three modulation types in this IP core namely, Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), and Quadrature Amplitude Modulation-16 (QAM-16). These modulation types are commonly used in the DCO-OFDM system. The modulation types can be selected programmatically from software that runs in the main processor by accessing the control register. The output of the modulator is designed for DCO-OFDM modulation using 64-point IFFT. According to the simulation results, this modulator IP core can achieve a throughput of 95.36 Mb/s, 184.77 Mb/s, and 347.81 Mb/s for BPSK, QPSK, and QAM-16, respectively. This modulator IP core is reusable in the DCO-OFDM system, so it increases productivity in DCO-OFDM system design.
Prototype of Long-Range Radio Communication for e-Nelayan Devices using LoRaWAN Febri Dawani; Syifaul Fuada; Sinantya Feranti Anindya; Aditia Rifai; Erick Adinugraha; Irfan Gani Purwanda; Trio Adiono
JURNAL INFOTEL Vol 10 No 4 (2018): November 2018
Publisher : LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20895/infotel.v10i4.411

Abstract

In this paper, development progress of a long-range radio communication-based fishing assistant system called e-Nelayan is reported. The purpose of the system is to increase the productivity, safety, and welfare of fishermen using mobile phone and long-range radio based system that enables them to report maritime violations, access and exchange information regarding weather, fishing area, marketplace, and also communication with mainland using Android-based mobile phone within extended range. We used LoRaWAN as a base technology for long-range communication scheme. In this work, the test conducted to obtain an insight to e-Nelayan device (LoRa-based) received RSSI and its packet loss. The received data collected in a server also includes the GPS tracking data. The test results show that our system reached approximately 5 km of distance between end-node to the LoRa Gateway within urban area (LoS configuration) and about 2 km for NLOS configuration.
Co-Authors Abdurrahman, Imran Adang Suwandi Ahmad Adijarto, Waskita Adinugraha, Erick Aditia Rifai Aditya F. Ardyanto Afandi, Najma Khansa Alya Agung, Anton Toni Agung, Anton Toni Ahmad Zaky Ramdani Alfi, Feiza Angga Pradana Angga Pradana Angga Pradana Angga Pratama Putra Angga Pratama Putra Angga Pratama Putra Angga Pratama Putra Angga Pratama Putra, Angga Pratama Arwin Datumaya Wahyudi Sumari Bambang Riyanto Trilaksono Braham Lawas Lawu Catherine Olivia Sereati Dawani, Febri Erick Adinugraha Erwin Setiawan Erwin Setiawan Erwin Setiawan, Erwin Fadjar Rahino Triputra Fadjar Rahino Triputra, Fadjar Rahino Farkhad Ihsan Hariadi Fathany, Maulana Yusuf Guno, Yomi Hans G. Kerkhoff Hans Kasan Hans Kasan Hariadi, Farkhad Ihsan Haslina Arshad Hidayat, Asyaraf Hiroaki Kunieda Idham Hafizh Imran Abdurrahman Infall Syafalni Irfan Gani Purwanda Joko Suryana Kasan, Hans Khilda Afifah Leonardi Paris Hasugian Maulana Yusuf Fathany Maulana Yusuf Fathany Maulana Yusuf Fathany Mohamad Dahsyat Mohamad Dahsyat, Mohamad Muhammad Arif Sulaiman Muhammad Husni Santriaji Nur Afyfah Suwadi Nur Ahmadi Nur Ahmadi Nurfitri Anbarsanti Octaviany, Siti Vivi Pamungkas, Sandi Purwanda, Irfan Gani Rachmad Vidya Wicaksana Putra Rachmad Vidya Wicaksana Putra Rachmad Vidya Wicaksana Putra Rachmad Vidya Wicaksana Putra Rachmad Vidya Wicaksana Putra Rachmad Vidya Wicaksana Putra Rachmad Vidya Wicaksana Putra Rella Mareta Rianto Adhy Sasongko Rianto Adhy Sasongko, Rianto Adhy Rifai, Aditia Ruzzakiah Jenal Septian G. P. Putra Sinantya Feranti Anindya SINANTYA FERANTI ANINDYA, SINANTYA FERANTI Suksmandhira Harimurti Sulaiman, Muhammad Arif Syifaul Fuada Waskita Adijarto Yulian Aska Yulian Aska Yulian Aska Yulian Aska Yulian Aska, Yulian Zainal Rasyid Mahayuddin