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

Author

Gandhi, Rajeev ; Mitra, Sanjit K.

Author_Institution

Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA

Volume

4

fYear

1997

fDate

9-12 Jun 1997

Firstpage

2421

Abstract

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

Keywords

digital filters; filtering theory; linear systems; time-domain analysis; time-varying filters; time-varying systems; transfer function matrices; alias free operation; aliasing cancellation; block filters; linear time-invariant system; linear time-varying system; periodically time varying systems; time-domain analysis; transfer function matrix; Delay; Digital filters; Filter bank; Frequency domain analysis; Nonlinear filters; Sufficient conditions; Throughput; Time domain analysis; Time varying systems; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on

Print_ISBN

0-7803-3583-X

Type

conf

DOI

10.1109/ISCAS.1997.612812

Filename

612812