UWB Signal Detection Based on Wavelet Packet Decomposition

Impulse radio ultra-wideband signal is difficult to detect due to its low power spectral density. Moreover, its extreme wide band makes it hard to digitalize. In this paper, a channelized blind detection based on wavelet packet decomposition is proposed and its detection performance is investigated. Based on the analysis of the detection performance, we develop a new detection threshold. Simulation results show that the detection performance based on wavelet packet decomposition maintains a good performance while it is easy to be implemented. Furthermore, within a fixed alarm probability, the new threshold obtains solid performance improvement.

[1]  J. Foerster,et al.  Channel modeling sub-committee report final , 2002 .

[2]  A. Walden,et al.  Wavelet Methods for Time Series Analysis , 2000 .

[3]  M.A. Temple,et al.  Spectral sensing ultra wideband signals using a down-converting channelized receiver , 2005, First IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks, 2005. DySPAN 2005..

[4]  Brett D Gronholz.  Non-Cooperative Detection of Ultra Wideband Signals , 2004 .

[5]  Todd R. Ogden,et al.  Wavelet Methods for Time Series Analysis , 2002 .

[6]  Wayne E. Stark,et al.  Performance of ultra-wideband communications with suboptimal receivers in multipath channels , 2002, IEEE J. Sel. Areas Commun..

[7]  Lei Feng,et al.  An oversampled channelized UWB receiver with transmitted reference modulation , 2006, IEEE Transactions on Wireless Communications.

[8]  James B. Y. Tsui,et al.  Digital Techniques for Wideband Receivers , 1995 .

[9]  Won Namgoong.  Channelized digital receivers for impulse radio , 2003, IEEE International Conference on Communications, 2003. ICC '03..