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| Wavelet Packet based Multicarrier Modulation for Cognitive UWB Systems
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Full
text: |
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Source |
Signal Processing: An International Journal (SPIJ) |
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Table of Contents |
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Download
Complete Issue PDF(1.87MB) |
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Volume: 4 Issue: 2 |
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Pages: 68-137 |
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Publication
Date: May 2010 |
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ISSN
(Online): 1985-2339 |
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Pages |
75 - 84 |
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Author(s) |
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Published
Date |
10-06-2010 |
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Publisher |
CSC
Journals, Kuala Lumpur,
Malaysia |
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ADDITIONAL
INFORMATION |
| Keywords Abstract References Cited by Related Articles Collaborative
Colleague |
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KEYWORDS: Orthogonal frequency division multiplexing (OFDM), Wavelet packet based MCM (WPMCM), cognitive radio (CR), ultra wideband (UWB) |
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| 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. |
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| Haleh Hosseini : Colleagues
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| Norsheila Fisal : Colleagues
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| Sharifah K. Syed-Yusof : Colleagues
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