THE DISCRETE-TIME PHASE DERIVATIVE AS A DEFINITION OF DISCRETE INSTANTANEOUS FREQUENCY AND ITS RELATION TO DISCRETE TIME-FREQUENCY DISTRIBUTIONS

被引：4

作者：

JEONG, J

CUNNINGHAM, GS

WILLIAMS, WJ

机构：

[1] LOS ALAMOS NATL LAB,HYDRODYNAM GRP,LOS ALAMOS,NM 87545

[2] UNIV MICHIGAN,DEPT ELECT ENGN & COMP SCI,ANN ARBOR,MI 48109

来源：

IEEE TRANSACTIONS ON SIGNAL PROCESSING | 1995年 / 43卷 / 01期

关键词：

D O I：

10.1109/78.365325

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：

We compare two definitions of the instantaneous frequency of a discrete signal: the two-point symmetric phase difference and the discrete-time phase derivative. The phase derivative definition avoids the pitfalls associated with the two-point definition and is equal to the first moment w.r.t. frequency of a properly defined, alias-free time-frequency distribution of the signal, which is consistent with the continuous-time case.

引用

页码：341 / 344

页数：4

共 11 条

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