The spectral interactor matrix for discrete-time periodic systems
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Introduces the notion of interactor matrix for periodic systems in discrete-time. Precisely, the periodic spectral interactor matrix (PSIMO) is defined as a unitary anticausal polynomial operator which renders the system invertible (delay-free) without affecting its spectral properties. The PSIMO is constructed by resorting to the lifted time-invariant representation of the periodic system.
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