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Minimum variance time-frequency distribution kernels for signals in additive noise

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1 Author(s)
Amin, M.G. ; Dept. of Electr. & Comput. Eng., Villanova Univ., PA, USA

We derive the minimum variance time-frequency distribution kernel for signals in additive circular complex Gaussian white noise processes. It is shown that the kernel that minimizes the average variance and simultaneously satisfies the time-frequency constraints for the noise-only ease remains optimum in the presence of frequency-modulated (FM) signals

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Signal Processing, IEEE Transactions on  (Volume:44 ,  Issue: 9 )