Title :
A comparison of different time-frequency atoms in both ambiguity and time-frequency domains
Author :
Ghofrani, S. ; Ayatollahi, A. ; McLernon, D.C.
Author_Institution :
Dept. of Electr. Eng., Iran Univ. of Sci. & Technol., Tehran, Iran
Abstract :
It is possible to employ different dictionaries for signal decomposition by using the matching pursuit algorithm. In this paper the atoms of four different dictionaries are compared together. The comparisons have been done in both the ambiguity and time-frequency domains, resulting in an identification of those atoms most suitable for time-frequency signal decomposition.
Keywords :
atoms; dictionaries; signal processing; time-frequency analysis; Gabor atoms; Laplace atoms; chirplet atoms; damped sinusoid atoms; dictionaries; matching pursuit algorithm; signal decomposition; time-frequency atoms; time-frequency domains; Argon; Chirp; Dictionaries; Energy resolution; Fourier transforms; Kernel; Matching pursuit algorithms; Signal analysis; Signal resolution; Time frequency analysis;
Conference_Titel :
Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the 3rd International Symposium on
Print_ISBN :
953-184-061-X
DOI :
10.1109/ISPA.2003.1296886
