Optimal Factoring of FIR Filters

Mehrnia, Alireza; Willson, A.N.

doi:10.1109/tsp.2014.2379647

Cited by 18 publications

(34 citation statements)

References 14 publications

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“…Studies have shown that the hardware complexity of linear phase FIR filters could be reduced by realizing the filter using a cascade of a scaled sequence of stages, each representing a factor of the FIR filter's transfer function [20]. A method is recently developed to find the best FIR filter factors [21].…”

Section: Methodsmentioning

confidence: 99%

“…Finally, to achieve further reduction in hardware complexity, we use the factoring filter design method of [20–22] to decompose the G ( z ) and I 2 ( z ) filters into an optimal sequence of factors (stages) and create an optimally factored-cascade IFIR implementation of the target filter.…”

Section: Methodsmentioning

confidence: 99%

“…Finally, the factoring filter design method of [20–22] is employed to further decompose each component G ( z ), I 3 ( z ), G V ( z ), and I V ( z ) into an optimal sequence of their factors and create an optimally factored-cascade IFIR implementation of the target filter H ( z ).…”

Section: Methodsmentioning

confidence: 99%

“…Our method employs a newly-developed optimally factored filter technique [20–22] combined with the optimally-stretched interpolated FIR method [23] to create a low complexity cascaded filter structure. Two design scenarios of Fig 2 are discussed in details and their hardware complexities are compared with the published state-of-the-art.…”

Section: Introductionmentioning

confidence: 99%

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A novel low-complexity digital filter design for wearable ECG devices

Asgari

Mehrnia

2017

PLoS ONE

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Wearable and implantable Electrocardiograph (ECG) devices are becoming prevailing tools for continuous real-time personal health monitoring. The ECG signal can be contaminated by various types of noise and artifacts (e.g., powerline interference, baseline wandering) that must be removed or suppressed for accurate ECG signal processing. Limited device size, power consumption and cost are critical issues that need to be carefully considered when designing any portable health monitoring device, including a battery-powered ECG device. This work presents a novel low-complexity noise suppression reconfigurable finite impulse response (FIR) filter structure for wearable ECG and heart monitoring devices. The design relies on a recently introduced optimally-factored FIR filter method. The new filter structure and several of its useful features are presented in detail. We also studied the hardware complexity of the proposed structure and compared it with the state-of-the-art. The results showed that the new ECG filter has a lower hardware complexity relative to the state-of-the-art ECG filters.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A novel low-complexity digital filter design for wearable ECG devices

Asgari

Mehrnia

2017

PLoS ONE

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“…It has been demonstrated that the implementation complexity of a digital filter can often be reduced when the filter is constructed as a cascade of blocks, each representing a factor of the filter's transfer function [7]- [10]. This approach, for non-halfband filter design, is examined in [9] where it is shown that filter complexity can often be reduced by simplifying the filter-tap multiplier coefficients, and this can be done, without seriously affecting the filter's frequency response when cascade is relatively insensitive to perturbations of the multiplier coefficient values.…”

Section: Introductionmentioning

confidence: 99%

Further Desensitized FIR Halfband Filters

Mehrnia

Willson

2015

IEEE Trans. Circuits Syst. I

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A halfband filter's sensitivity to coefficient quantization can be significantly reduced by constructing the filter as a cascade of sections. The further desensitized FIR halfband filter presented here has an increased reduction in coefficient sensitivity. This is accomplished by doubling the number of extracted blocks in the cascade filter structure. The relationship between the resulting further-desensitized halfband filter's structure and the halfband filter's transfer function is also demonstrated through reasoning, as well as showing the same for the previous desensitized halfband filter, for which the present filter represents an improvement. Further, it is shown how such insensitivity can be exploited in the filter-design process to yield halfband filters with reduced hardware complexity, leading to lower power consumption and/or higher operating speeds.

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Realization of FIR Filters

Wanhammar

Saramäki

2020

Digital Filters Using MATLAB

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Optimal Factoring of FIR Filters

Cited by 18 publications

References 14 publications

A novel low-complexity digital filter design for wearable ECG devices

A novel low-complexity digital filter design for wearable ECG devices

Further Desensitized FIR Halfband Filters

Realization of FIR Filters

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