Proceedings of 1994 28th Asilomar Conference on Signals, Systems and Computers (1994)
Pacific Grove, CA, USA
Oct. 31, 1994 to Nov. 2, 1994
S.D. Gordon , Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA
J.A. Ritcey , Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA
We present a new approach to the modeling of non-Gaussian complex random signals. The method transforms an underlying complex white Gaussian sequence, whose magnitude is shaped by a zero memory non-linear (ZMNL) transformation. In this way, we match the magnitude PDF, and the power spectral density of the non-Gaussian output. The ZMNL technique has the additional benefits of synthesizing complex, positive, or real valued signals by keeping only portions of the complex signal. This provides a quick simulation capability. The JPDF of a multivariate sample is easily computed from our model. We use this to form a likelihood detector for the presence of our non-Gaussian versus a white Gaussian signal. The dramatic improvement of the likelihood detector compared with a Gaussian based quadratic detector is presented.<
random processes, maximum likelihood detection, probability, transforms, covariance matrices, signal synthesis, Gaussian processes, spectral analysis
S. Gordon and J. Ritcey, "A transformation approach for modeling and detecting non-Gaussian signals," Proceedings of 1994 28th Asilomar Conference on Signals, Systems and Computers(ACSSC), Pacific Grove, CA, USA, 1995, pp. 283-287.