MMSFL-OWFB: A novel class of orthogonal wavelet filters for epileptic seizure detection

M Sharma, AA Bhurane, UR Acharya - Knowledge-Based Systems, 2018 - Elsevier
The optimal filters with minimal bandwidth are highly desirable in many applications such as
communication and biomedical signal processing. In this study, we design optimally …

[HTML][HTML] A new approach to identify obstructive sleep apnea using an optimal orthogonal wavelet filter bank with ECG signals

M Sharma, M Raval, UR Acharya - Informatics in Medicine Unlocked, 2019 - Elsevier
Obstructive sleep apnea (OSA) is a severe sleep ailment. It manifests when a person's
breathing is interrupted while sleeping due to an inadequate supply of oxygen to the brain …

[HTML][HTML] Automated heartbeat classification and detection of arrhythmia using optimal orthogonal wavelet filters

M Sharma, RS Tan, UR Acharya - Informatics in Medicine Unlocked, 2019 - Elsevier
Electrocardiogram (ECG) is commonly used to analyze heartbeats. Arrhythmia is a
disturbance of the heartbeat that can potentially be lethal. Arrhythmia can be detected by …

Automated detection of sleep stages using energy-localized orthogonal wavelet filter banks

M Sharma, S Patel, S Choudhary… - Arabian Journal for …, 2020 - Springer
Sleep is an integral part of human life which provides the body with much-needed rest which
facilitates recovery and promotes health. Sleep disorders, however, lead to a reduced …

Detection of shockable ventricular arrhythmia using optimal orthogonal wavelet filters

M Sharma, RS Tan, UR Acharya - Neural Computing and Applications, 2020 - Springer
Sudden cardiac death (SCD) is caused by lethal arrhythmia. Ventricular fibrillation (VF) and
ventricular tachycardia (VT) are amenable to defibrillation or electrical shock therapy …

Design of time–frequency localized filter banks: transforming non-convex problem into convex via semidefinite relaxation technique

M Sharma, D Bhati, S Pillai, RB Pachori… - Circuits, Systems, and …, 2016 - Springer
We present a method for designing optimal biorthogonal wavelet filter banks (FBs). Joint
time–frequency localization of the filters has been chosen as the optimality criterion. The …

Iterative technique for optimizing two-channel: Quadrature mirror, bi-orthogonal and graph filter bank

H Wang, C Zhao, Z Zhao, Y Huang - Signal Processing, 2020 - Elsevier
An iterative technique is proposed to optimally design the two-channel linear phase (LP) FIR
quadrature mirror filter bank (2c-LP-FIR-QMFB). In each iteration, first, the frequency-domain …

Signal design for context aware distributed radar sensing networks based on wavelets

H Nikookar - IEEE Journal of Selected Topics in Signal …, 2014 - ieeexplore.ieee.org
In the field of radar sensing, a paradigm shift is taking place from the traditional radar system
to distributed sensing/radar networks. Comparing with the single radar system distributed …

[PDF][PDF] Optimized paraunitary filter banks for time-frequency channel diagonalization

Z Ju, T Hunziker, D Dahlhaus - EURASIP journal on advances in signal …, 2010 - Springer
We adopt the concept of channel diagonalization to time-frequency signal expansions
obtained by DFT filter banks. As a generalization of the frequency domain channel …

Orthogonal wavelet filters with minimum RMS bandwidth

DBH Tay, Z Lin, S Murugesan - IEEE Signal Processing Letters, 2014 - ieeexplore.ieee.org
For a time-limited sequence, the Root-Mean-Square (RMS) bandwidth is the normalized
second moment of the spectrum. The RMS bandwidth is a useful and analytically tractable …