Performance analysis of frequency-domain block LMS adaptive digital filters
Performance analysis of frequency-domain block LMS adaptive digital filters
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DOI：
10.1109/31.20196
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发表时间：
1989-02
期刊：
影响因子：
--
通讯作者：
J. Lee;C. Un
中科院分区：
文献类型：
--
作者：
J. Lee;C. Un
研究了利用快速傅立叶变换有效更新滤波器权值的频域块最小均方自适应数字滤波器的性能。特别地，分析了无约束FBLMS算法的收敛性，该算法通过去除已知的基于重叠节省分割的频域权值调整所需的约束，从而降低了算法的复杂度。研究了对权值的不同频率分量采用不同频域功率估计归一化的收敛因子，提高了收敛速度的自正交化FBLMS算法的性能。>
The performance of the frequency-domain block least-mean-square (FBLMS) adaptive digital filters, whose filter weights are updated efficiently using the fast Fourier transform, is investigated. In particular, the convergence of the unconstrained FBLMS algorithm with reduced complexity, which is obtained by removing the constraint that has been known to be required in adjusting the frequency-domain weights based on overlap-save sectioning, is analyzed. The performance of the self-orthogonalizing FBLMS algorithm with improved convergence speed, in which different convergence factors normalized by frequency-domain power estimates are used for different frequency components of the weights, is also studied. >