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FRAMELET BASED ULTRA-WIDEBAND SYSTEM | ||
| AL-TAQANI | ||
| Article 1, Volume 26, Issue 5, 2013, Pages 0-0 | ||
| Authors | ||
| Atheer Alaa Sabri; Hussein Ali Abed | ||
| Abstract | ||
| Ultra-Wideband (UWB) system has been popularized as a technology for short-range, high data rate communication. Orthogonal Frequency Division Multiplexing OFDM approach for UWB provides unique advantages in short high data rate wireless applications in case of reducing the effect of multipath. This paper studies the Framelet based Ultra-Wideband (UWB) System. In Framelet based UWB, Framelet transform is used for multicarrier modulation in OFDM instead of the conventional fast Fourier transform. For the Framelet based system, due to the elimination of the cyclic prefix, an effective time domain equalizer must be used in order to reduce the effect of Inter- Symbol Interference (ISI). On the other hand, with the use of MMSE equalizer, Framelet-UWB system shows better performance than FFT-UWB with the same type of equalizer. Finally, spreading codes are used with the proposed system for multiple access of the channel by different users as similar to multicarrier-CDMA. The simulation was carried using MATLAB software package. Index Terms: UWB, OFDM, FFT, Wavelet, Framelet, MMSE Equalizer, CDMA. | ||
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