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An OFDM System Based on Dual Tree Complex Wavelet Transform (DT-CWT)
Mohamed Hussien Nerma, Nidal S. Kamel, Varun Jeoti
Pages - 14 - 21     |    Revised - 05-05-2009     |    Published - 18-05-2009
Volume - 3   Issue - 2    |    Publication Date - April 2009  Table of Contents
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KEYWORDS
OFDM, WPT, DT-CWT, FFT, Multicarrier Modulation
ABSTRACT
As demand for higher data rates rises, need to develop more efficient wireless communication systems also rises. The work described in this paper is an effort in this direction. We have proposed a novel orthogonal frequency division multiplexing (OFDM) system based on dual – tree complex wavelet transform (DT-CWT). In the proposed scheme, DT-CWT is used in the place of fast Fourier transform (FFT). The proposed scheme achieves excellent improvements in bit error rate (BER) over conventional OFDM and wavelet packet modulation (WPM) systems. Moreover, the proposed scheme offers the better peak – to – average power ratio (PAPR) performance compared to conventional OFDM and WPM systems at the expense of acceptable computational complexity. The complementary cumulative distribution function (CCDF) of PAPR for the proposed scheme achieves about 3 dB improvement in PAPR over the traditional OFDM and WPM signals at 0.1% of CCDF.
CITED BY (6)  
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Mr. Mohamed Hussien Nerma
- Malaysia
mohamed_hussien@ieee.org
Mr. Nidal S. Kamel
- Malaysia
Mr. Varun Jeoti
-