Title :
New time-frequency distribution
Author :
Pei, Soo-Chang ; Tsai, Er-Jung
Author_Institution :
Inst. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
Time-frequency distribution (TFD) is a tool to analyze time-varying signals. The cross term effect due to the second-order form of Cohen´s class severely blocks its application. A new TFD is presented which not only meets several useful TFD requirements but also has good interference immunity. It is deduced that the role which this new TFD plays with respect to Levin´s instantaneous power spectrum (IPS) is the counterpart of Choi-Williams exponential distribution (ED) with respect to the Wigner-Ville distribution (WVD)
Keywords :
Wigner distribution; interference (signal); signal processing; spectral analysis; time-varying systems; Choi-Williams exponential distribution; Cohen´s class; Levin´s instantaneous power spectrum; Wigner-Ville distribution; cross term effect; interference immunity; second-order form; time-frequency distribution; time-varying signals; Attenuation; Exponential distribution; Interference constraints; Kernel; Signal design; Time frequency analysis;
Conference_Titel :
Circuits and Systems, 1993., ISCAS '93, 1993 IEEE International Symposium on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-1281-3
DOI :
10.1109/ISCAS.1993.393693
