Finding zeros for linear phase FIR filters

Priyanka, .; Panwar, B.S.; Joshi, Seema

doi:10.1109/iadcc.2013.6514381

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Linear Circuit1

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2016

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“…We used the Jury stability criterion for testing if the denominator of Equation (6) has at least one zero outside the unit circle. This criterion was selected because the denominator of Equation (6) has a polynomial degree of 400 for the given simulations parameters,and the algorithms for obtaining the roots of a high degree polynomial (more than 100) are impaired by high inaccuracy [16], whereas the Jury stability criterion is not affected by this [17]. In this case the Jury criterion predicted unstable results.…”

Section: Linear Circuitmentioning

confidence: 99%

On Instabilities in Time Marching Methods

Becerra¹,

Vega²,

Rachidi³

2016

PIER C

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We discuss in this paper the stability of the time marching (TM) method. We identify one cause of instability in the method associated with the calculation of variables involved in the convolution operation. We provide a solution to this problem, preventing the appearance of unstable poles in the Z-domain. This solution is fundamentally different from other previously presented approaches in the sense that it is not based on filtering or predictive techniques. Instead, it consists of preprocessing the known variable in the convolution equations.

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Section: Linear Circuitmentioning

confidence: 99%