Kernel design for reduced interference distributions

Abstract

The authors present a class of time-frequency signal representations (TFRs) called the reduced interference distribution (RID). An overview of commonly used TFRs is given, and desirable distribution properties are introduced. Particular attention is paid to the interpretation of Cohen's class of time-frequency distributions of TFRs in the ambiguity, temporal correlation, spectral correlation, and time-frequency domains. Based on the desirable kernel requirements, the RID is discussed and further defined. A systematic procedure to create RID kernels, (or, equivalently, compute RIDs) is proposed. Some aspects and properties of the RID are discussed. The authors estimate design considerations for RIDs and compare various selections of the primitive window. Some experimental results demonstrating the performance of the RID are presented.<>