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Alpha stable distribution has not the usual power spectral density. The current fractional lower order spectrum definitions, such as alpha spectrum, covariation spectrum, fractional lower order covariance spectrum and geometric power spectrum, etc., all use the fractional lower order transform so that there are two order statistics for transformed signals. But the fractional lower order transform...
In this paper, the limitations of JXME on the communication mechanism, the functions,the security vulnerability and the relay proxy are analyzed, and then an extension version IJXME is proposed. The testing environment is set up, and the efficiency of file transfer has been tested. The results show that the IJXME can be applied in developing the applications of the Mobile P2P, and this mechanism can...
A fast algorithm of logarithm-form fractional lower-order spectrums is proposed in this paper in order to be facilitative for practice application that traditional fractional lower-order spectrums need to identify characteristic exponent alpha and improve its calculating speed for alpha stable distribution signal or noise. The algorithm is not depended on a prior knowledge of characteristic exponent...
A white alpha stable distribution noise (WASDN) and its pseudo-power spectrum (PPS) is exactly proposed in this paper to analyze better frequency domain characteristic of alpha stable distribution noise. By a PPS estimate method based on fast Fourier transform (FFT), we can conclude that the method can have finite variance only there is four-order moments to transformed sequence and the estimate variance...
The whitening problem of colored noise had been resolved for Gaussian white noise through linear system, but other inputs through other systems had not been resolved which includes non-Gaussian white noise through linear or nonlinear system. This paper briefly proposed an improved iteratively reweighted least P norm (IIRLP) algorithm for whitening in alpha-stable environments. And the parameters in...
Alpha stable distribution is better for modeling impulsive noises than Gaussian distribution in signal processing. We proposed a new adaptive recursive least p-norm Kalman filtering algorithm and a new robust CDMA multiuser detection method based on least p-norm Kalman filtering. The simulation experiments show that the proposed new algorithm is more robust than the conventional Kalman filtering
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