一种可实现的仿射组合自适应滤波算法
为了进一步改善自适应算法收敛速度和稳态偏差的性能,在对仿射组合滤波器自适应算法性能分析的基础上,提出了一种新的组合参数更新公式,该更新公式中的固定系数改为与子滤波器输出相关的函数,使仿射组合自适应滤波算法可以更好地实时跟踪子滤波器的性能变化。仿真结果表明,基于新组合参数更新公式的仿射组合自适应滤波算法与基于理想组合参数更新公式的仿射组合自适应滤波算法性能一致,同时具有快的收敛速度和低的稳态偏差,且对子滤波器步长变化具有良好的跟踪性能。...
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| Published in | 电子技术应用 Vol. 40; no. 5; pp. 108 - 110 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
南京信息工程大学江苏省气象探测与信息处理重点实验室,江苏南京210044
2014
南京信息工程大学电子与信息工程学院,江苏南京210044%南京信息工程大学电子与信息工程学院,江苏南京,210044 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 0258-7998 |
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| Summary: | 为了进一步改善自适应算法收敛速度和稳态偏差的性能,在对仿射组合滤波器自适应算法性能分析的基础上,提出了一种新的组合参数更新公式,该更新公式中的固定系数改为与子滤波器输出相关的函数,使仿射组合自适应滤波算法可以更好地实时跟踪子滤波器的性能变化。仿真结果表明,基于新组合参数更新公式的仿射组合自适应滤波算法与基于理想组合参数更新公式的仿射组合自适应滤波算法性能一致,同时具有快的收敛速度和低的稳态偏差,且对子滤波器步长变化具有良好的跟踪性能。 |
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| Bibliography: | adaptive algorithm; affine combination; combination parameter; convergence speed; steady-state deviation Guo Yecai, Zhang Binglong, Wu Binbin (1. Jiangsu Key Laboratory of Meteorological Observation and Information Processing, Nanjing University of Information Science & Technology, Nanjing 210044, China; 2.School of Electronic&Information Engineering, Nanjing University of Information Science&Technology, Nanjing 210044,China) In order to further improve the performance of convergence rate and steady deviation of the adaptive algorithm, this paper proposed a new combination parameter updating formula based on the analysis of performance on affine combination adaptive filters. In this proposed updating formula, the fixed coefficient is replaced with the function associated with the subfilters output, which can make the affine combination adaptive filtering algorithm track the performance of sub-filters in real-time. Simulation re suits show that the performance of the affine combination adaptive filtering algorit |
| ISSN: | 0258-7998 |