Title :
Implementation of joint moment constraints in synthesis of MCE positive time-frequency distributions
Author_Institution :
Dept. of Electr. Eng., Pittsburgh Univ., PA, USA
Abstract :
We present a method for imposing joint time-frequency moment constraints in the minimum cross-entropy (MCE) construction of positive time-frequency distributions. This method makes it possible to impose all joint moment constraints simultaneously. Necessary conditions on normalized joint moment constraints for an MCE solution to exist are provided. An example illustrating the performance of the algorithm is also given
Keywords :
minimum entropy methods; signal processing; time-frequency analysis; MCE positive time-frequency distributions; joint moment constraints; joint time-frequency moment constraints; minimum cross-entropy construction; synthesis; Biomedical measurements; Constraint optimization; Entropy; Iterative methods; Lagrangian functions; Machining; Nonlinear equations; Speech; Time frequency analysis;
Conference_Titel :
Time-Frequency and Time-Scale Analysis, 1998. Proceedings of the IEEE-SP International Symposium on
Conference_Location :
Pittsburgh, PA
Print_ISBN :
0-7803-5073-1
DOI :
10.1109/TFSA.1998.721422
