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A Unique Wavelet-based Multicarrier System with and without MIMO over Multipath Channels with AWGN

by Rameez Asif, Raed Abd-alhameed, J. M. Noras
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 117 - Number 9
Year of Publication: 2015
Authors: Rameez Asif, Raed Abd-alhameed, J. M. Noras
10.5120/20585-3015

Rameez Asif, Raed Abd-alhameed, J. M. Noras . A Unique Wavelet-based Multicarrier System with and without MIMO over Multipath Channels with AWGN. International Journal of Computer Applications. 117, 9 ( May 2015), 31-40. DOI=10.5120/20585-3015

@article{ 10.5120/20585-3015,
author = { Rameez Asif, Raed Abd-alhameed, J. M. Noras },
title = { A Unique Wavelet-based Multicarrier System with and without MIMO over Multipath Channels with AWGN },
journal = { International Journal of Computer Applications },
issue_date = { May 2015 },
volume = { 117 },
number = { 9 },
month = { May },
year = { 2015 },
issn = { 0975-8887 },
pages = { 31-40 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume117/number9/20585-3015/ },
doi = { 10.5120/20585-3015 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T22:58:55.702526+05:30
%A Rameez Asif
%A Raed Abd-alhameed
%A J. M. Noras
%T A Unique Wavelet-based Multicarrier System with and without MIMO over Multipath Channels with AWGN
%J International Journal of Computer Applications
%@ 0975-8887
%V 117
%N 9
%P 31-40
%D 2015
%I Foundation of Computer Science (FCS), NY, USA
Abstract

Recent studies suggest that multicarrier systems using wavelets outperform conventional OFDM systems using the FFT, in that they have well-contained side lobes, improved spectral efficiency and BER performance, and they do not require a cyclic prefix. Here we study the wavelet packet and discrete wavelet transforms, comparing the BER performance of wavelet transform-based multicarrier systems and Fourier based OFDM systems, for multipath Rayleigh channels with AWGN. In the proposed system zero-forcing channel estimation in the frequency domain has been used. Results confirm that discrete wavelet-based systems using Daubechies wavelets outperform both wavelet packet transform- based systems and FFT-OFDM systems in terms of BER. Finally, Alamouti coding and maximal ratio combining schemes were employed in MIMO environments, where results show that the effects of multipath fading were greatly reduced by the antenna diversity.

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Index Terms

Computer Science
Information Sciences

Keywords

OFDM BER Multipath Discrete Wavelet Transform (DWT) Wavelet Packet Transform (WPT) Multiple Input Multiple Output (MIMO). .

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