Asmorowati, Rina (2015) Implementasi Dan Evaluasi Kinerja Encoder-Decoder Hamming Pada M-Ary Quadrature Amplitude Modulation (M-Qam) Mengunakan Wireless Open-Access Research Platform (Warp). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Salah satu kendala dalam sistem komunikasi digital adalah adanya bit
error yang disebabkan oleh noise yang timbul selama proses transmisi
berlangsung. Akibatnya data yang diterima pada penerima tidak sesuai
dengan data yang dikirim. Apalagi jika modulasi yang digunakan
adalah modulasi multilevel seperti M-ary Quadrature Amplitude
Modulation (M-QAM). Semakin tinggi level modulasi maka tingkat
kesalahannya pun semakin besar.
Kode Hamming merupakan salah satu error control coding yang
berfungsi untuk mendeteksi kesalahan (error detection) sekaligus
memperbaiki kesalahan (error correction) bit. Kode Hamming mampu
untuk mengoreksi kesalahan tunggal dalam satu blok. Pada Tugas Akhir
ini, kode Hamming ( ), ( ), dan ( ) diimplementasikan pada
M-QAM menggunakan modul Wireless Open-Access Research Platform
(WARP) sebagai model pemancar dan penerima yang bersifat real-time.
Hasil implementasi dan pengukuran pada sistem modulasi M-QAM
dengan menggunakan kode Hamming menunjukkan bahwa Bit Error
Rate (BER) menurun. Kode Hamming dapat bekerja dengan baik pada
level modulasi 4-QAM, 8-QAM dan 16-QAM. Tingginya level
modulasi menyebabkan peluang error semakin besar, sehingga pada
level modulasi 32-QAM dan 64-QAM, kinerja kode Hamming kurang
maksimal karena kemampuan koreksinya terbatas hanya satu bit error
pada setiap bloknya.
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One of the problems in digital communication systems is the presence of
bit errors caused by noise that arises during the transmission process.
As a result, the data received at the receiver is not in accordance with
the data sent. Moreover, if the modulation used is multilevel modulation
such as M-ary Quadrature Amplitude Modulation (M-QAM). Higher of
modulation level is proportional with probability of errors.
Hamming code is one of error control coding is used to detect errors
(error detection) while fixing errors (error correction) bits. Hamming
code is able to correct a single error in one block. In this final project,
the Hamming code (7,4), (15,11) and (31,26) in the M-QAM are
implemented using Wireless Open-Access Research Platform (WARP)
modules as a transmitter and receiver models that are real- time.
The implementation and results of measurements on M-QAM
modulation system using Hamming code show that decreseas Bit Error
Rate ( BER ). Hamming Code have good performance at the level
modulation of 4-QAM, 8-QAM and 16-QAM. The high-level modulation
causing higher probability of error, so the level modulation of 32-QAM
and 64-QAM performance less than the maximum because the
correction capability is limited to only a single bit error in each block.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSE 621.382 23 Asm i |
| Uncontrolled Keywords: | Kode Hamming, M-QAM, WARP ======================================================================= Hamming Code, M-QAM, WARP |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK201 Electric Power Transmission T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK6564 Radio transmitter-receivers |
| Divisions: | Faculty of Electrical Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | - Taufiq Rahmanu |
| Date Deposited: | 27 Mar 2019 02:36 |
| Last Modified: | 27 Mar 2019 08:09 |
| URI: | http://repository.its.ac.id/id/eprint/62596 |
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