By Topic

Multiband and multicarrier wavelet packet multiplexing for UWB transmissions

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Harada, H. ; Grad. Sch. of Electr. Eng., Yokohama Nat. Univ., Yokohama ; Hernandez, M. ; Kohno, R.

We propose a novel multi-channel modulation scheme for UWB transmissions based on the discrete wavelet packet transform (DWPT) and DWT combined with spread spectrum and multiband approaches (as analogous to multicarrier CDMA and multiband OFDM). Thus, two possible structures are proposed for UWB transmissions. Namely, multiband DWT multiplexing and DWT-CDMA multiplexing. Indeed, the proposed techniques divide UWB channels into a set of parallel channels. Exploiting the properties of wavelets in time and frequency, a set of multi-channel basis functions can be formed such that the corresponding channel-output functions remain nearly orthogonal for any UWB channel. Multiple access can be introduced in the form of time-frequency hopping codes (similar to multiband OFDM) or by introducing spreading codes (similar to multicarrier CDMA). The proposals are compared to multiband OFDM and multicarrier CDMA in terms of BER performance.

Published in:

Ultra-Wideband, 2008. ICUWB 2008. IEEE International Conference on  (Volume:3 )

Date of Conference:

10-12 Sept. 2008