Intermittently Updated Simplified Proportionate Affine Projection Algorithm
نویسندگان
چکیده
In this paper, an intermittent update interval for filter coefficients and a simplified output error vector computation is proposed for a proportionate affine projection algorithm. It is shown that the proposed algorithm has good convergence performance and much smaller computation complexity than other proportionate-type APAs. Also, the accuracy of its implementation using the logarithmic number system was investigated. We demonstrated the performance of the proposed algorithm for echo cancellation and adaptive feedback cancellation applications. Keywords-Proportionate-type algorithms; adaptive filters; affine projection algorithm; logarithmic number system.
منابع مشابه
New Proportionate Affine Projection Algorithm
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 a...
متن کاملA Family of Selective Partial Update Affine Projection Adaptive Filtering Algorithms
In this paper we present a general formalism for the establishment of the family of selective partial update affine projection algorithms (SPU-APA). The SPU-APA, the SPU regularized APA (SPU-R-APA), the SPU partial rank algorithm (SPU-PRA), the SPU binormalized data reusing least mean squares (SPU-BNDR-LMS), and the SPU normalized LMS with orthogonal correction factors (SPU-NLMS-OCF) algorithms...
متن کاملBlock Sparse Memory Improved Proportionate Affine Projection Sign Algorithm
A block sparse memory improved proportionate affine projection sign algorithm (BS-MIP-APSA) is proposed for block sparse system identification under impulsive noise. The new BS-MIP-APSA not only inherits the performance improvement for block-sparse system identification, but also achieves robustness to impulsive noise and the efficiency of the memory improved proportionate affine projection sig...
متن کاملA low complexity reweighted proportionate affine projection algorithm with memory and row action projection
A new reweighted proportionate affine projection algorithm (RPAPA) with memory and row action projection (MRAP) is proposed in this paper. The reweighted PAPA is derived from a family of sparseness measures, which demonstrate performance similar to mu-law and the l0 norm PAPA but with lower computational complexity. The sparseness of the channel is taken into account to improve the performance ...
متن کاملL0 Norm Based Affine Projection Sign Algorithm for Sparse Underwater Acoustic Channel Estimation under Symmetric Α-stable Noise
A new framework is proposed for deriving adaptive algorithms for sparse channel estimation under the presence of Symmetric α-Stable (SαS) noise. The algorithmic framework employs the natural gradient and incorporates both the Lp norm of the channel prediction error and the L0 norm of the complex-valued channel taps. Based on this framework, a novel affine projection sign algorithm is derived an...
متن کامل