How to calculate the denominator coefficient for a large number of poles?

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Waleed Tariq
Waleed Tariq 2020-10-10
评论： Sunand Agarwal 2020-10-14
How to calculate the denominator coefficient for a large number of poles?

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回答（1 个）

Sunand Agarwal
Sunand Agarwal 2020-10-13
You might want to use numden function in MATLAB to extract both the numerator and denominator coefficients.
If this doesn't help, please explain your problem statement in detail.
  2 个评论
Waleed Tariq
Waleed Tariq 2020-10-13
Actually, I have a output of the causal linear shift-invariant filter and the variance of the input signal is 0.05 and the filter is an autoregressive filter. iHave to calxulae the denominator coefficients for a large number of poles and then I have to calculate the mean square error for each number of poles. Moreover, I have to use one of the formulas from "Model Order Slection Crtiteria" to calculate optimal number of poles. In the end I have to calculate again coefficients of denominator but for optimal number of poles .
Sunand Agarwal
Sunand Agarwal 2020-10-14
You may refer to the tfdata function for extracting the denominator coefficients for transfer functions.
This might help in your use case.

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