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

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Waleed Tariq 2020-10-10

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https://ww2.mathworks.cn/matlabcentral/answers/610221-how-to-calculate-the-denominator-coefficient-for-a-large-number-of-poles

评论： Sunand Agarwal 2020-10-14

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Answer 1

Sunand Agarwal 2020-10-13

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https://ww2.mathworks.cn/matlabcentral/answers/610221-how-to-calculate-the-denominator-coefficient-for-a-large-number-of-poles#answer_512576

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.

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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 2020-10-14