scholarly journals Scheduled Step-Size Subband Adaptive Filter Algorithm With Implemental Consideration

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 199025-199033 ◽  
Author(s):  
Taesu Park ◽  
Minho Lee ◽  
Poogyeon Park
Keyword(s):  
Adaptive Filter ◽  
Step Size ◽  
Subband Adaptive Filter

scholarly journals Robust Normalized Subband Adaptive Filter Algorithm with a Sigmoid-Function-Based Step-Size Scaler and Its Convex Combination Version

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Zijie Shen ◽  
Lin Tang ◽  
Li Yang
Keyword(s):  
Steady State ◽  
Cost Function ◽  
Adaptive Filter ◽  
Convex Combination ◽  
Sigmoid Function ◽  
Function Structure ◽  
Step Size ◽  
Subband Adaptive Filter ◽  
Norm Constraint ◽  
Normalized Subband Adaptive Filter

In this paper, by inserting the logarithm cost function of the normalized subband adaptive filter algorithm with the step-size scaler (SSS-NSAF) into the sigmoid function structure, the proposed sigmoid-function-based SSS-NSAF algorithm yields improved robustness against impulsive interferences and lower steady-state error. In order to identify sparse impulse response further, a series of sparsity-aware algorithms, including the sigmoid L0 norm constraint SSS-NSAF (SL0-SSS-NSAF), sigmoid step-size scaler improved proportionate NSAF (S-SSS-IPNSAF), and sigmoid L0 norm constraint step-size scaler improved proportionate NSAF (SL0-SSS-IPNSAF), is derived by inserting the logarithm cost function into the sigmoid function structure as well as the L0 norm of the weight coefficient vector to act as a new cost function. Since the use of the fix step size in the proposed SL0-SSS-IPNSAF algorithm, it needs to make a trade-off between fast convergence rate and low steady-state error. Thus, the convex combination version of the SL0-SSS-IPNSAF (CSL0-SSS-IPNSAF) algorithm is proposed. Simulations in acoustic echo cancellation (AEC) scenario have justified the improved performance of these proposed algorithms in impulsive interference environments and even in the impulsive interference-free condition.

Variable step-size sign subband adaptive filter with subband filter selection

2018 ◽  
Vol 152 ◽  
pp. 141-147 ◽  
Author(s):  
Jaegeol Cho ◽  
Hyun Jae Baek ◽  
Bum Yong Park ◽  
JaeWook Shin
Keyword(s):  
Adaptive Filter ◽  
Variable Step Size ◽  
Step Size ◽  
Variable Step ◽  
Subband Adaptive Filter ◽  
Filter Selection

Normalised subband adaptive filter with variable step size

2012 ◽  
Vol 48 (4) ◽  
pp. 204 ◽  
Author(s):  
JaeWook Shin ◽  
NamWoong Kong ◽  
PooGyeon Park
Keyword(s):  
Adaptive Filter ◽  
Variable Step Size ◽  
Step Size ◽  
Variable Step ◽  
Subband Adaptive Filter
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