An OFDM System Based on Dual Tree Complex Wavelet Transform (DT-CWT)

Signal Processing: An International Journal

Nidal S. Kamel¹  Varun Jeoti¹  Mohamed Hussien Nerma¹ 

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关键词: OFDM;    WPT;    DT-CWT;    FFT;    Multicarrier Modulation;   

DOI  :  

学科分类：物理（综合）

来源: Computer Science Journals

【 摘 要 】

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.

【 授权许可】

Unknown