作者
John M O'Toole, Mostefa Mesbah, Boualem Boashash
发表日期
2008/8/8
期刊
IEEE Transactions on Signal Processing
卷号
56
期号
11
页码范围
5427-5434
出版商
IEEE
简介
It is not possible to generate an alias-free discrete Wigner-Ville distribution (DWVD) from a discrete analytic signal. This is because the discrete analytic signal must satisfy two mutually exclusive constraints. We present, in this paper, a new discrete analytic signal that improves on the commonly used discrete analytic signal's approximation of these two constraints. Our analysis shows that - relative to the commonly used signal - the proposed signal reduces aliasing in the DWVD by approximately 50%. Furthermore, the proposed signal has a simple implementation and satisfies two important properties, namely, that its real component is equal to the original real signal and that its real and imaginary components are orthogonal.
学术搜索中的文章
JM O'Toole, M Mesbah, B Boashash - IEEE Transactions on Signal Processing, 2008