计算机工程与应用2011，Vol.47Issue(28)：131-134,4.DOI:10.3778/j.issn.1002-8331.2011.28.036
改进的变步长比例仿射投影算法
Improved variable step-size proportionate affine projection adaptive filtering algorithm
摘要
Abstract
Variable step-size segment proportionate affine projection algorithm,namely VSS-SPAPA,incorporates the advantages of fast convergence speed and low mis-adjustment.However,the large number of filter coefficients in echo cancellation applications diminishes the usefulness of this algorithm owing to increased complexity.To deal with this obstacle,a selective par-tial-update method for VSS-SPAPA is proposed which partitions the filter coefficients into multiple subsets and focuses on updating a selected subset per iteration because the computational complexity is proportional to the number of filter coeffi-cients.Echo cancellation simulation results verify that the proposed algorithm can maintain the convergence and tracking performance close to the full update VSS-SPAPA when its updating counts range from around 50% to 100% of the number of updates in standard algorithm.关键词
回声消除/稀疏冲激响应/变步长/局部迭代Key words
echo cancellation/sparse impulse response/variable step-size/partial update分类
信息技术与安全科学引用本文复制引用
马立新,侯楚林..改进的变步长比例仿射投影算法[J].计算机工程与应用,2011,47(28):131-134,4.基金项目
国家自然科学基金(the National Natural Science Foundation of China under Grant No.61072092). （the National Natural Science Foundation of China under Grant No.61072092）
