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Performance Improvement by using a Concatenated Levels of Encoding in Wavelet based OFDM Systems

by Noura Ali, M. Ibrahim Youssef, I. Fathi Tarrad
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 177 - Number 5
Year of Publication: 2017
Authors: Noura Ali, M. Ibrahim Youssef, I. Fathi Tarrad
10.5120/ijca2017915760

Noura Ali, M. Ibrahim Youssef, I. Fathi Tarrad . Performance Improvement by using a Concatenated Levels of Encoding in Wavelet based OFDM Systems. International Journal of Computer Applications. 177, 5 ( Nov 2017), 30-34. DOI=10.5120/ijca2017915760

@article{ 10.5120/ijca2017915760,
author = { Noura Ali, M. Ibrahim Youssef, I. Fathi Tarrad },
title = { Performance Improvement by using a Concatenated Levels of Encoding in Wavelet based OFDM Systems },
journal = { International Journal of Computer Applications },
issue_date = { Nov 2017 },
volume = { 177 },
number = { 5 },
month = { Nov },
year = { 2017 },
issn = { 0975-8887 },
pages = { 30-34 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume177/number5/28625-2017915760/ },
doi = { 10.5120/ijca2017915760 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-07T00:45:04.823183+05:30
%A Noura Ali
%A M. Ibrahim Youssef
%A I. Fathi Tarrad
%T Performance Improvement by using a Concatenated Levels of Encoding in Wavelet based OFDM Systems
%J International Journal of Computer Applications
%@ 0975-8887
%V 177
%N 5
%P 30-34
%D 2017
%I Foundation of Computer Science (FCS), NY, USA
Abstract

This paper simulates a BER for OFDM system by using the wavelet transforms rather than using the Fourier transforms which reduce the BER for the same SNR. The coding algorithm using the convolutional coding and hamming coding in a series concatenated levels for wavelet based OFDM when applying the AWGN channel. This proposed coding improves the system performance. The mathematical formula for the BER in this system is deduced. The results show a decreased value of BER for the proposed coding algorithm.

References
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  11. Mr. Sandesh Y.M, Mr. Kasetty Rambabu, “Implementation of Convolution Encoder and Viterbi Decoder for Constraint Length 7 and Bit Rate ½”, Journal of Engineering Research and Applications, Vol. 3, Issue 6, Nov-Dec 2013, pp.42-46.
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  14. Noura Ali, M. I. Yosof, Ibrahem F. Tarrad, “A Proposed Method to Reduce the BER in Wavelet based OFDM”, IJCA, USA, 2016.
  15. ACKNOWLEDGMENTS
  16. Thanks to my god to finish this work. A great thanks to El-Azhar university Electrical department.
Index Terms

Computer Science
Information Sciences

Keywords

OFDM BER SNR AWGN DWT IDWT QAM

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