Aliasing cancelation in block filters and periodically time varying systems: a time-domain approach

Rajeev Gandhi and Sanjit. K. Mitra
Dept.of Electrical and Computer Engineering
University of California,Sant Barbara
Sant Barbara,CA 93106-9560
rajeev [at], mitra [at]


A block filter, in general, is a linear, periodic and time-varying (LPTV) system. Under certain conditions satisfied by the transfer function matrix of the filter, the system has an alias free operation, i.e., it behaves like a linear time-invariant(LTI) system. In this paper, we first develop a set of necessary and sufficient conditions for the alias free operation of block filters based on a time-domain analysis of the system. We then develop conditions for the alias free operation of general LPTV systems.
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R. Gandhi and S. K. Mitra,
IEEE International Symposium on Circuits and Systems (ISCAS'97), pp. 2421-2424, Hong Kong, Jun. 1997.
Node ID: 257 , DB ID: 53 , Lab: IPL , Target: Proceedings
Subject: [IPL] « Look up more