A Memory Sparse Proportionate Affine Projection Algorithm for Echo Cancellation: Analysis and Simulations

2021 ◽  
Author(s):  
Senthil Murugan Boopalan ◽  
Swarnalatha Alagala ◽  
Avudaiammal Ramalingam
Keyword(s):  
Echo Cancellation ◽  
Projection Algorithm ◽  
Affine Projection ◽  
Affine Projection Algorithm

scholarly journals New Proportionate Affine Projection Algorithm

2012 ◽  
Author(s):  
Felix Albu
Keyword(s):  
Echo Cancellation ◽  
Projection Algorithm ◽  
Projection Algorithms ◽  
Recursive Filtering ◽  
Affine Projection ◽  
Affine Projection Algorithm ◽  
History Of ◽  
Improved Performance ◽  
Weight Coefficients ◽  
Filtering Procedure

A new proportionate-type affine projection algorithm with intermittent update of the weight coefficients is proposed. It takes into account the “history” of the proportionate factors and uses a fast recursive filtering procedure. Also, the effect of using dichotomous coordinate descent iterations is investigated. Simulation results indicate that the proposed algorithm has improved performance and much lower computational complexity than other proportionate affine projection algorithms. Therefore it represents a practical solution for acoustic echo cancellation systems.

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