(For USM Staff/Student Only)

EngLib USM > Ω School of Electrical & Electronic Engineering >

Performance comparison between low-density parity-check codes and reed-solomon codes in wireless channels / Ierwan Abdul Karim

Performance comparison between low-density parity-check codes and reed-solomon codes in wireless channels_Ierwan Abdul Karim_E3_2008_875002461_00003068437_NI
Projek tahun akhir ini melibatkan rekabentuk aturcara untuk kod Pemeriksa Kesetaraan Kepadatan Rendah dan kod “Reed-Solomon” dengan menggunakan MATLAB. Kod kod ini boleh berfungsi untuk mengawal dan membetulkan kesalahan dalam data selepas dihantar melalui saluran tanpa wayar. Terdapat 3 jenis saluran tanpa wayar iaitu “Additive White Gaussian Noise ”, “Rician Fading” dan saluran “Rayleigh Fading”. Dalam projek ini, data imej digunakan sebagai sumber data. Kualiti gambar selepas dinyahkod dapat dikira dengan menggunakan nisbah isyarat puncak kepada hingar dan membandingkan imej yang telah dinyahkod dengan imej asal. Dengan itu, pencapaian kod Pemeriksa Kesetaraan Kepadatan Rendah dan kod “Reed Solomon” dalam saluran yang berlainan dapat dianalisis dengan menggunakan nisbah tersebut. Maka, kita akan memperoleh beberapa set nisbah isyarat puncak kepada hingar dan gambar berlainan kualiti dimana ia bergantung kepada keupayaan kod-kod tersebut dalam membetulkan kesalahan dalam data.Kualiti gambar selepas dinyahkod dikatakan baik jika nisbah isyarat puncak kepada hingar melebih 30dB. Secara keseluruhannya, kod Pemeriksa Kesetaraan Kepadatan Rendah adalah lebih baik menerusi saluran manakala kod “Reed Solomon” lebih baik menerusi saluran “Rician Fading” dan “Rayleigh Fading”. _________________________________________________________________________________________ This final year project involves designing of the Low-Density Parity-Check codes and Reed-Solomon codes using Matlab. These codes can perform the error control and correction before data being transmitted in wireless environment. There are three channels used as wireless environment i.e. the Additive White Gaussian Noise Rician Fading Channel and Rayleigh Fading Channel. In this project, grayscale image is used as the data source. The quality of the output grayscale image after decoder of codes or codes can be measured using the peak signal to noise ratio by comparing the output with the input grayscale image. So, the performance of the codes and codes in different channel can be analyzed using the value of . As a result, we will get different set value of and output image according to the ability of the codes in error correcting. The quality of output grayscale image is considered good if the value of the is above . Overall, performance in error control and correction data being transmitted in wireless environment is better for using codes in channel and codes in Rician and Rayleigh Fading channels.
Contributor(s):
Ierwan Abdul Karim - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875002461
Language:
English
Subject Keywords:
Low-Density Parity-Check; Reed-Solomon; Additive White Gaussian Noise
First presented to the public:
5/1/2008
Original Publication Date:
9/21/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Electrical & Electronic Engineering
Citation:
Extents:
Number of Pages - 80
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-09-24 11:30:14.572
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Nor Hayati Ismail

All Versions

Thumbnail Name Version Created Date
Performance comparison between low-density parity-check codes and reed-solomon codes in wireless channels / Ierwan Abdul Karim1 2018-09-24 11:30:14.572
Engineering Library USM @ 2017