G. De Nicolao and G. Ferrari-Trecate. The structure of predictable discrete-time cyclostationary processes. Proc. Symp. on Math. Theory of Networks and Systems (MTNS'98) , pages 751--753, 1998. Padova, Italy, 6-10 July.
The Wold decomposition of discrete-time CS (cyclostationary) processes intoregular and predictable component is considered. Using the properties ofthe zeros of linear periodic systems it is shown that the predictablecomponent consists of a linear combination of sinusoidally modulatedperiodic waves.