In:
Journal of Mathematical Physics, AIP Publishing, Vol. 39, No. 8 ( 1998-08-01), p. 4041-4070
Abstract:
We introduce a generalized concept of underspread linear time-varying systems (linear operators) which contains a previous definition as a special case. We show that an existing approximate transfer function calculus (symbolic calculus) can be extended to this wider and practically more relevant class of underspread operators. As a mathematical underpinning of this calculus, we establish explicit bounds on various error quantities associated with it. The transfer function calculus provides a theoretical basis for various methods recently proposed for nonstationary signal processing, and it has important implications in the theory of time-varying power spectra.
Type of Medium:
Online Resource
ISSN:
0022-2488
,
1089-7658
Language:
English
Publisher:
AIP Publishing
Publication Date:
1998
detail.hit.zdb_id:
1472481-9
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