Linear Periodically Time-Varying Discrete-Time Systems: Aliasing and LTI Approximations
نویسندگان
چکیده
Linear periodically time-varying (LPTV) systems are abundant in control and signal processing; examples include multirate sampled-data control systems and multirate lter-bank systems. In this paper, several ways are proposed to quantify aliasing eeect in discrete-time LPTV systems; these are associated with optimal time-invariant approximations of LPTV systems using operator norms.
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