%0 Journal Article
	%A Kazuyoshi Mori
	%D 2017
	%J International Journal of Electrical and Information Engineering
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 126, 2017
	%T Number of Parametrization of Discrete-Time Systems without Unit-Delay Element: Single-Input Single-Output Case
	%U https://publications.waset.org/pdf/10007548
	%V 126
	%X In this paper, we consider the parametrization of the
discrete-time systems without the unit-delay element within the
framework of the factorization approach. In the parametrization,
we investigate the number of required parameters. We consider
single-input single-output systems in this paper. By the investigation,
we find, on the discrete-time systems without the unit-delay element,
three cases that are (1) there exist plants which require only one
parameter and (2) two parameters, and (3) the number of parameters
is at most three.
	%P 778 - 782