A METHOD FOR IMPROVED DISTRIBUTION CONCENTRATION IN THE TIME-FREQUENCY ANALYSIS OF MULTICOMPONENT SIGNALS USING THE L-WIGNER DISTRIBUTION

被引：50

作者：

STANKOVIC, L

机构：

[1] Elektrotehnicki fakultet, Montenegro, Podgorica

来源：

IEEE TRANSACTIONS ON SIGNAL PROCESSING | 1995年 / 43卷 / 05期

关键词：

D O I：

10.1109/78.382413

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The energy location in the Cohen class of time-frequency distributions is analyzed, If the instantaneous frequency is linear, then only the Wigner distribution produces the ideal energy concentration, The scaled version of the Wigner distribution (L-Wigner distribution), is used to improve the time-frequency representation of signals with nonlinear instantaneous frequencies. In the case of multicomponent signals, the cross terms, appearing in the Wigner distribution and in the L-Wigner distribution, can be easily removed or reduced in a computationally very efficient way. The theory is illustrated on the numerical examples with multicomponent noisy signals.

引用

页码：1262 / 1268

页数：7

共 16 条

[11] ON THE WIGNER DISTRIBUTION OF DISCRETE-TIME NOISY SIGNALS WITH APPLICATION TO THE STUDY OF QUANTIZATION EFFECTS [J].