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ITS » Paper and Presentation » Teknik Telekomunikasi - D4
Posted by dee@its.ac.id at 30/09/2013 10:39:35  •  1209 Views


ANALISA KINERJA KODE KONVOLUSI PADA SISTEM SUCCESSIVE INTERFERENCE CANCELLATION MULTIUSER DETECTION CDMA DENGAN MODULASI QPSK BERBASIS PERANGKAT LUNAK

ANALYSIS OF CONVOLUTION CODE PERFORMANCE ON SUCCESSIVE INTERFERENCE CANCELLATION MULTIUSER DETECTION CDMA SYSTEM WITH QPSK MODULATION BASED SOFTWARE

Author :
PUJIASTUTIK, AIS MUSFIRO ( 7207040024 )




ABSTRAK

Pada pembuatan proyek akhir ini dilakukan analisa kinerja kode konvolusi pada sistem Successive Interference Cancellation SIC Multi User Detection MUD CDMA berbasis perangkat lunak dengan modulasi QPSK. Encoder kode konvolusi yang digunakan pada sisi transmitter memiliki struktur 212 dengan rate . Sedangkan pada sisi receiver dilakukan dengan metode Successive Interference Cancellation SIC dan dilakukan proses dekoder menggunakan algoritma viterbi. Hasilnya adalah berupa nilai bit error rate BER sebagai fungsi signal noise to ratio SNR. Pada BER 10-3 kanal AWGN SIC stage 3 lebih baik 4 dB dari stage 2 dan 103 dB dari stage 1 untuk kanal Rayleigh fading stage 3 lebih baik 5 dB dibandingkan SIC stage 1 dan stage 2. Kinerja kode konvolusi pada sistem successive interference cancellation melalui kanal AWGN pada saat nilai 10-3 lebih baik 32 dB dibandingkan dengan tanpa kode konvolusi dan pada kanal Rayleigh fading pada saat SNR 1533 dB sedangkan sistem yang tidak menggunakan kode konvolusi belum mencapai nilai BER 10-3 sampai nilai SNR 30. Dan semakin sedikit jumlah user maka kinerja sistem akan semakin baik.


ABSTRACT

The purpose of making this final project is to analyze the performance of convolutional codes on the successive interference cancellation SIC Multi User Detection MUD CDMA system-based software with QPSK modulation. Convolutional code encoder is performed on the transmitter side using the structure 212 with a rate . While on the side of the receiver is done by the method of successive interference cancellation SIC and performed decoding using the algorithm viterbi. The result is a value bit error rate as a function of signal to noise ratio SNR. For BER 10-3 on AWGN channel SIC 3rd stage is better 4 dB than SIC 2nd stage and better 10.3 dB than SIC 1nd stage in Rayleigh fading channel SIC 3rd stage is better 5 dB than SIC 2nd stage and 1nd stage. Convolutional code performance on successive interference cancellation system on AWGN channel is better 3.2 dB than system without convolutional code and on Rayleigh fading chennel is 15.33 dB while the system without convolution code has not yet reached the value of BER 10-3 to SNR 30 dB. And lower number of users in system so the system will be better.



KeywordsCDMA; Convolutional Code; Successive Interference Cancellation; Viterbi Algorithm
 
Subject:  Telepon seluler
Contributor
  1. Ir. Yoedy Moegiharto, MT
Date Create: 03/08/2011
Type: Text
Format: pdf
Language: Indonesian
Identifier: ITS-paper-72021130002063
Collection ID: 72021130002063
Call Number: 621.384 56 Puj a


Source
Paper and Presentation of Telecomunication Engineering, 621.384 56 Puj a, 2013

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Copyright @2013 by ITS Library. This publication is protected by copyright and per obtained from the ITS Library prior to any prohibited reproduction, storage in a re transmission in any form or by any means, electronic, mechanical, photocopying, reco For information regarding permission(s), write to ITS Library




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  1.  ITS-paper-27193-7207040024-Paper.pdf - 358 KB
  2.  ITS-paper-27193-7207040024-Presentation.pdf - 641 KB




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