Wisesa, Lukas Purba (2021) Evaluasi Kinerja Protokol Data Link Berbasis MSARQ pada Sistem Komuniksi HF MIMO 2x2. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Indonesia merupakan salah satu negara dengan potensi bencana alam yang tinggi. Saat ini komunikasi saat terjadinya bencana alam dilakukan melalui telepon satelit, namun telepon satelit memerlukan infrastruktur yang mahal untuk diimplementasikan. Alternatif komunikasi lain yang dapat digunakan saat terjadi bencana alam adalah radio amatir dengan frekuensi tinggi (HF). Saat ini penggunaan komunikasi frekuensi tinggi masih menggunakan sistem single input single output (SISO) dengan protokol data link AX.25 dimana sistem ini hanya dapat mengirim informasi dalam jumlah kecil, salah satu cara untuk mengatasai hal ini adalah dengan menggunakan sistem komunikasi HF multi input multi ouput (MIMO). Untuk mempersiapkan teknologi tersebut maka diperlukan protokol data link HF MIMO. Pada penelitian akan dilakukan pemodelan dan simulasi protokol data link MSARQ yang memanfaatkan go back-N arq pada sistem komunikasi HF MIMO 2x2. Pemodelan sistem komunikasi HF MIMO 2x2, dimulai dengan membangkitkan sejumlah frame yang berukuran 2.656 bit pada tiap frame. Kemudian bit tersebut akan demultiplexing dan dimodulasi dengan modulasi BPSK. Kemudian bit informasi akan dikirimkan melalui kanal HF multi-mode. Selanjutnya bit informasi yang sampai ke penerima akan di deteksi menggunakan algoritma V-Blast. Jika terjadi kerusakan maka frame yang diterima akan dibuang dan dikirim kembali. Hasil simulasi menunjukkan HF MIMO 2x2 dengan protokol data link MSARQ mengirim 193% lebih cepat dibandingkan protokol AX.25 Selain itu sistem komunikasi HF MIMO 2x2 dengan protokol data link MSARQ mempunyai throughput 9% lebih besar dibandingkan dengan sistem komunikasi HF MIMO 2x2 dengan protokol data link MMARQ.
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Indonesia is one of the countries with high potential for natural
disasters. Currently, communication during natural disasters is done via
satellite phones, but satellite phones require expensive infrastructure to
implement. Another communication alternative that can be used during a
natural disaster is amateur radio with high frequency (HF). Nowadays the
use of high-frequency communication is still using a single input single
output (SISO) system with AX.25 data link protocol. This system can
only send small amounts of information, one way to overcome this is to
use the HF multi input multi output (MIMO) communication system. To
prepare this technology, the HF MIMO data link protocol is needed.
In this research, modeling and simulation of the MSARQ data
link protocol using go back-N arq will be carried out on a 2x2 HF MIMO
communication system. The process of 2x2 HF MIMO communication
system modelling, starts by generating frames with 2,656 bits in each
frame. Then the bits are multiplexed and modulated. The channel used in
this process is a multi-mode HF channel. Furthermore, the bits that
reaches the receiver will be detected using the V-Blast algorithm. In the
event of a failure, the previous frames will be discarded and sent back.
The simulation results show that in small value of SNR,
MMARQ tends to have better throughput and smaller delay than
MSARQ. Meanwhile with 10 dB SNR value, the 2x2 HF MIMO
communication system with the MSARQ data link protocol has a 9%
bigger throughput than the 2x2 HF MIMO communication system with
MMARQ data link protocol.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Data link, HF-MIMO, High Frequency, MSARQ, throughput, High Frequency |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5103.2 Wireless communication systems. Two way wireless communication T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5105 Data Transmission Systems T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunication |
| Divisions: | Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | Lukas Purba Wisesa TA Dobel |
| Date Deposited: | 17 Aug 2021 09:15 |
| Last Modified: | 19 Aug 2021 07:09 |
| URI: | http://repository.its.ac.id/id/eprint/87183 |
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