Axppa: Approximate parallel prefix adders

MMA da Rosa, G Paim, PÜL da Costa… - … Transactions on Very …, 2022 - ieeexplore.ieee.org
Addition units are widely used in many computational kernels of several error-tolerant
applications such as machine learning and signal, image, and video processing. Besides …

Fixed-point NLMS and IPNLMS VLSI architectures for accurate FECG and FHR processing

PÜ da Costa, G Paim, LMG Rocha… - … Circuits and Systems, 2021 - ieeexplore.ieee.org
Capturing signals without noise and interference while monitoring the maternal abdomen's
fetal electrocardiogram (FECG) is a challenging task. This method can provide fetal …

Exploring NLMS-based adaptive filter hardware architectures for eliminating power line interference in EEG signals

AB La Rosa, PTL Pereira, P Ücker, G Paim… - Circuits, Systems, and …, 2021 - Springer
Electroencephalogram (EEG) is a biomedical technique for capturing the human brain's
electrical information to process its activities and actions. EEG is one of the main methods …

Power-efficient approximate Newton–Raphson integer divider applied to NLMS adaptive filter for high-quality interference cancelling

V Guidotti, G Paim, LMG Rocha, E Costa… - Circuits, Systems, and …, 2020 - Springer
The division datapath is undoubtedly the most complex operation in a wide range of digital
signal processing applications, such as in adaptive filtering algorithms. This paper proposes …

Optimizing iterative-based dividers for an efficient natural logarithm operator design

P Ücker, MR Weirich, G Paim… - 2020 IEEE 11th Latin …, 2020 - ieeexplore.ieee.org
This work proposes to optimize iterative-based dividers for a natural logarithm operator
design. The logarithm operator approximates the function at the base e. Such an operator is …

Architectural exploration for energy-Efficient fixed-Point Kalman Filter VLSI design

PTL Pereira, G Paim, PÜL da Costa… - … Transactions on Very …, 2021 - ieeexplore.ieee.org
Efficient Kalman filter (KF) designs for real-time mobile applications, such as nano-drones
navigation, robots localization, spacecraft orbit control, GPS positioning, image recognition …

A Low-Latency Divider Design for Embedded Processors

X Wei, Y Yang, J Chen - Sensors, 2022 - mdpi.com
Division is generally regarded as a low-frequency, high-latency operation in integer
operations. Division is also the operation that stalls the processor pipeline most frequently …

Exploring architectural solutions for an energy-efficient Kalman filter gain realization

PTL Pereira, G Paim, P Ücker, E Costa… - 2019 26th IEEE …, 2019 - ieeexplore.ieee.org
The Kalman filter is a signal processing algorithm that plays an essential role in real-time
mobile applications as nano drones navigation, spacecraft orbit control, GPS positioning …

Matrix Inversion Accelerated MCU Circuit for Image Recognition Pertinent Computation

W Wang, Y Jin, Q Yuan, H Sun - 2023 International Technical …, 2023 - ieeexplore.ieee.org
As the most complex computation in the fundamental matrix manipulation, the operation of
matrix inversion limits the processing capability in the field of the image recognition and the …

Architectural Exploration for Energy-Efficient LMS and NLMS Adaptive Filters VLSI Design

PTL Pereira, G Paim, E Costa, P Flores… - 2023 21st IEEE …, 2023 - ieeexplore.ieee.org
Adaptive filtering plays an essential role in digital signal processing (DSP), being present in
many application fields such as noise reduction, telecommunication, and audio signal …