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A Proposed Method to Reduce the BER in Wavelet based OFDM

by Noura Ali, M. Ibraheem, I. Fathi
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 140 - Number 2
Year of Publication: 2016
Authors: Noura Ali, M. Ibraheem, I. Fathi
10.5120/ijca2016909255

Noura Ali, M. Ibraheem, I. Fathi . A Proposed Method to Reduce the BER in Wavelet based OFDM. International Journal of Computer Applications. 140, 2 ( April 2016), 40-44. DOI=10.5120/ijca2016909255

@article{ 10.5120/ijca2016909255,
author = { Noura Ali, M. Ibraheem, I. Fathi },
title = { A Proposed Method to Reduce the BER in Wavelet based OFDM },
journal = { International Journal of Computer Applications },
issue_date = { April 2016 },
volume = { 140 },
number = { 2 },
month = { April },
year = { 2016 },
issn = { 0975-8887 },
pages = { 40-44 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume140/number2/24569-2016909255/ },
doi = { 10.5120/ijca2016909255 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T23:41:14.864189+05:30
%A Noura Ali
%A M. Ibraheem
%A I. Fathi
%T A Proposed Method to Reduce the BER in Wavelet based OFDM
%J International Journal of Computer Applications
%@ 0975-8887
%V 140
%N 2
%P 40-44
%D 2016
%I Foundation of Computer Science (FCS), NY, USA
Abstract

Long term evolution (LTE) selects orthogonal frequency division multiplexing (OFDM) and its single-carrier counterpart SC-FDM as the basic transmission schemes. OFDM is a very interesting approach for high data rate transmission in a Gaussian channel and multipath fading environment that leads to inter symbol interference (ISI). In this paper, a proposed convolutional encoder model is used to improve the error rate performance of OFDM system, by using discrete wavelet transform (DWT) instead of fast Fourier transform (FFT) to reduce ISI. The performance of OFDM based on DWT using M-ary quadrature amplitude modulation (M-QAM) as a modulation scheme to achieve high data rate. The simulation results demonstrate that, the bit error rate (BER) is improved for a proposed convolutional encoder model as compared with the previous work.

References
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Index Terms

Computer Science
Information Sciences

Keywords

LTE OFDM SC-FDMA ISI DWT FFT M-QAM BER

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