Variable Step Size Methods of the Hybrid Affine Projection Adaptive Filtering Algorithm under Symmetrical Non-Gaussian Noise

The idea of variable step-size was introduced into the Hybrid Affine Projection Algorithm (H-APA) and we propose two step size algorithms based on H-APA, which are called Variable Step-Size (VSS-H-APA) Modified (MVSS-H-APA). These variable-step aim to further improve robust performance convergence speed H-APA under non-Gaussian noise. This allows for faster while maintaining stability. MVSS-H-APA goes than VSS-H-APA estimate noise in order achieve better performance. proposed algorithm performs existing system identification symmetric