Desain Gelombang Radar Mimo Menggunakan Teknik Interleaved-OFDM

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 ======================================================================================================================== 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: https://repository.its.ac.id/id/eprint/72689

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