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Wavelet Packet based Multicarrier Modulation for Cognitive UWB Systems
Haleh Hosseini, Norsheila Fisal, Sharifah K. Syed-Yusof
Pages - 75 - 84     |    Revised - 30-04-2010     |    Published - 10-06-2010
Volume - 4   Issue - 2    |    Publication Date - May 2010  Table of Contents
Orthogonal frequency division multiplexing (OFDM), Wavelet packet based MCM (WPMCM), cognitive radio (CR), ultra wideband (UWB)
Orthogonal frequency division multiplexing (OFDM) is a multi-carrier modulation (MCM) scheme where the sub carriers are orthogonal waves. The main advantages of OFDM are robustness against multi-path fading, frequency selective fading, narrowband interference, and efficient use of spectrum. Recently it is proved that MCM system optimization can be achieved by applying wavelet bases instead of conventional fourier bases. Wavelet packet based MCM (WPMCM) systems have overall the same capabilities as OFDM systems with some improved features. In this research the literature and analytic schemes of WPMCM system is addressed, a wavelet packet based cognitive ultra wideband (UWB) transceiver is proposed, and performance analysis of WPMCM in different wireless multipath channels is investigated. Simulation results show a significant enhancement in terms of BER, spectral efficiency and side-lobes suppression comparing to conventional OFDM.
CITED BY (11)  
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Miss Haleh Hosseini
Universiti Teknologi Malaysia - Malaysia
Professor Norsheila Fisal
Universiti Teknologi Malaysia - Malaysia
Dr. Sharifah K. Syed-Yusof
Universiti Teknologo Malaysia - Malaysia