Title :
Study on multiband UWB system via WPMCM in the context of cognitive radio
Author :
Hosseini, Haleh ; Fisal, Norsheila ; Syed-Yusof, Sharifah K.
Author_Institution :
Fac. of Electr. Eng., Univ. Teknol. Malaysia, Skudai, Malaysia
Abstract :
Cognitive radio (CR) introduces the opportunistic usage of frequency bands and Orthogonal frequency division multiplexing (OFDM) is a strong candidate for CR design. Ultra wideband (UWB) radio fulfills some of the key cognitive radio requirements. Regarding the power limitations for UWB systems the main challenging issue is the impact of narrowband interference (NBI). Wavelet packet transform (WPT) is a possible choice for designing OFDM systems and has been shown as a solution to reduce interference. In this research, we explain the benefits of WPT from the literature, compare wavelet packet based MCM (WPMCM) for multiband UWB with its conventional version, and provide analytic schemes and block diagrams to implement proposed system.
Keywords :
OFDM modulation; cognitive radio; interference suppression; ultra wideband communication; wavelet transforms; OFDM; WPMCM; WPT; cognitive radio; interference reduction; multiband UWB radio; narrowband interference; orthogonal frequency division multiplexing; wavelet packet based MCM; wavelet packet transform; Bandwidth; Chromium; Cognitive radio; Discrete wavelet transforms; Interference; Narrowband; OFDM; Ultra wideband technology; Wavelet domain; Wavelet packets; Cognitive radio (CR); orthogonal frequency division multiplexing (OFDM); ultra wideband (UWB); wavelet packet based MCM (WPMCM); wavelet packet transform (WPT);
Conference_Titel :
Communications (MICC), 2009 IEEE 9th Malaysia International Conference on
Conference_Location :
Kuala Lumpur
Print_ISBN :
978-1-4244-5531-7
DOI :
10.1109/MICC.2009.5431524
