On the Wold decomposition of discrete-time cyclostationary processes
Giuseppe De Nicolao, Giancarlo Ferrari‐Trecate · IEEE Transactions on Signal Processing · 1999
The Wold decomposition of discrete-time CS (cyclostationary) processes into a regular and predictable component is considered. Using the properties of the zeros of linear periodic systems, it is shown that the predictable component consists of a linear combination of sine waves.