Title :
Interference Suppression in the Wigner Distribution Using Fractional Fourier Transformation and Signal Synthesis
Author :
Qazi, Saad ; Georgakis, Apostolos ; Stergioulas, Lampros K. ; Shikh-Bahaei, Mohammad
Author_Institution :
Dept. of Electr. Eng., NED Univ. of Eng. & Technol., Karachi
fDate :
6/1/2007 12:00:00 AM
Abstract :
A novel method for the suppression of cross terms in the time-frequency domain is introduced. First, interference is identified using a fractional Fourier transform-based technique. Then, auto-terms are detected, synthesized, and subtracted from the original signal. The process is repeated until all signal components are extracted. Finally, the Wigner distributions of pure auto-terms are superimposed to yield a high readability representation
Keywords :
Fourier transforms; Wigner distribution; interference suppression; signal representation; signal synthesis; time-frequency analysis; Wigner distribution; fractional Fourier transformation; interference suppression; signal components; signal synthesis; time-frequency domain; Degradation; Fourier transforms; Impedance; Interference suppression; Kernel; Signal analysis; Signal design; Signal processing; Signal synthesis; Time frequency analysis; Fractional Fourier transform; Wigner distribution (WD); reduced interference distributions;
Journal_Title :
Signal Processing, IEEE Transactions on
DOI :
10.1109/TSP.2007.893971
