Rizky, Muhammad (2016) Desain Gelombang Radar Mimo Menggunakan Teknik Interleaved-OFDM. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Modifikasi dari MIMO-OFDM konvensional bertujuan untuk
meningkatkan ortogonalitas antar subcarrier dengan penggunaan
bandwidth yang sama. Pada tugas akhir ini dibahas mengenai akurasi,
resolusi dari jarak, kecepatan, dan sudut kedatangan (DoA) dari empat
modifikasi MIMO-OFDM yaitu MIMO-OFDM konvensional, MIMOIOFDM
model Wiesbeck, MIMO-IOFDM model Yoke, dan MIMOIOFDM
menggunakan subcarrier acak. Sinyal OFDM yang dikirim
didesain untuk bekerja pada multiple antena dan setiap transmiter
mengirimkan subcarrier yang berbeda atau unik. Algoritma MUSIC
digunakan untuk mendeteksi sudut kedatangan target dan periodogram
digunakan untuk mendeteksi informasi jarak dan kecepatan target.
Penggunaan virtual antenna bertujuan untuk meningkatkan akurasi
deteksi sudut dan meningkatkan jumlah target yang bisa dideteksi. Untuk
mereduksi level daya sidelobe maka digunakan Window Hamming
namun akan menurunkan resolusi dari hasil deteksi. Dari hasil simulasi
yang telah dilakukan, MIMO-IOFDM model Wiesbeck mempunyai nilai
akurasi dan resolusi terbaik jika dibandingkan dengan yang lain, namun
nilai level daya mirip dengan MIMO-IOFDM Model Yoke dan lebih
tinggi jika dibanding MIMO-OFDM konvensional dan MIMO-IOFM
subcarrier acak. MIMO-OFDM konvensional memiliki deteksi jarak
paling buruk dibandingkan dengan yang lain. Sedangkan MIMO-IOFDM
subcarrier acak memiliki level sidelobe paling rendah dibandingkan
dengan yang lain, namun hasil deteksinya masih mengandung interferer
justru level daya dari interferer lebih tinggi
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A modification of the conventional orthogonal frequency
division multiplexing signals is discussed that allows for the creation of a
set perfectly orthogonal transmit signals sharing the same bandwidth.
These signals can be employed for multi-input multi-output (MIMO)
radar system. In this final project, discussed accuration, resolution of
range, velocity and Direction of Arrival (DoA) of detection from four type
MIMO OFDM there are Conventional MIMO-OFDM, MIMOInterleaved
OFDM Wiesbeck model, MIMO- Interleaved OFDM Yoke
model, and MIMO-OFDM using random subcarrier. The transmit OFDM
signal is designed in such a way that the multiple transmitters will only
radiate at the unique subcarriers. The virtual antenna array concept is
utilized to improve resolution, accuration, and maximal number of DoA
detection radar DoA detetion. Using MUSIC algorithm to get DoA
information and periodogram to get velocity and range information. To
reduce mainlobe level of radar detection used Hamming Window but this
technique will be reduce the resolution of detection. The result of
simulation are MIMO-IOFDM Wiesbeck Model have the best velocity of
detection but the sidelobe level is similar with MIMO-IOFDM Yoke
Model and higher than MIMO-OFDM Conventional and MIMO-IOFDM
Random Subcarrier. Conventional MIMO-OFDM have poor of range
detection compared with others, and MIMO-IOFDM random subcarrier
have lower sidelobe level of range and velocity detection but the interferer
level higher than power level of main target.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSE 621.384 Riz d |
| Uncontrolled Keywords: | Interleaved OFDM; Algoritma MUSIC; Virtual Array; Periodogram; Radar |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5103.2 Wireless communication systems. Two way wireless communication |
| Divisions: | Faculty of Industrial Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | ansi aflacha |
| Date Deposited: | 15 Jan 2020 07:40 |
| Last Modified: | 15 Jan 2020 07:40 |
| URI: | http://repository.its.ac.id/id/eprint/72689 |
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