Tan, J. L. and Sha'ameri, Ahmad Zuri (2011) Adaptive optimal kernel smooth-windowed wigner-ville bispectrum for digital communication signals. Signal Processing, 91 (4). pp. 931-937. ISSN 0165-1684
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Official URL: http://dx.doi.org/10.1016/j.sigpro.2010.09.012
Higher-order timefrequency distribution (HO-TFD) outperforms the bilinear TFD in noisy conditions but suffers more severely from cross-terms when used to analyze multi-component signals. Various kernel functions have been introduced to suppress cross-terms in bilinear TFD but in general TFD with a fixed kernel do not give accurate TFR for all type of signals. In this paper, adaptive optimal TFR is obtained by extending the separable kernel design in bilinear TFD to the third-order TFD and is able to achieve accurate timefrequency representation at SNR as low as -2 dB. This globally adaptive optimal kernel smooth-windowed Wigner-Ville bispectrum (AOK-SWWVB) is designed where its separable kernel is determined automatically from the input signal, without prior knowledge of the signal parameters. It is shown that this system performance is comparable to the system when priori knowledge of the signal is known.
|Uncontrolled Keywords:||adaptive optimal kernel, digital communication signals, higher-order timefrequency distribution, timefrequency analysis, wigner-ville bispectrum|
|Subjects:||T Technology > TK Electrical engineering. Electronics Nuclear engineering|
|Deposited By:||Liza Porijo|
|Deposited On:||12 Nov 2012 07:31|
|Last Modified:||13 Feb 2017 02:41|
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