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Fast realization of root MUSIC using multi-taper real polynomial rooting

机译:使用多锥实多项式生根快速实现根MUSIC

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摘要

The computational complexity of root MUSIC, which is on the order of (2N-2)~3, turns out to be computationally expensive when N is large, where N is the number of array elements. To reduce the computational complexity, an efficient implementation of root MUSIC using the multi-taper rooting technique is developed. It decomposes the (2N-2)-order complex polynomial as 2N-1 groups of low order real polynomials by the multi-taper fast Fourier transform (FFT). Then, all roots can be simultaneously solved with low complexity. Numerical examples are given to demonstrate the effectiveness of the presented method.
机译:根MUSIC的计算复杂度约为(2N-2)〜3,当N大时,计算复杂,其中N是数组元素的数量。为了降低计算复杂性,开发了使用多锥度生根技术的根MUSIC的有效实现。通过多锥快速傅立叶变换(FFT)将(2N-2)阶多项式分解为2N-1组低阶实多项式。然后,可以以低复杂度同时求解所有根。数值例子说明了该方法的有效性。

著录项

  • 来源
    《Signal processing》 |2015年第1期|55-61|共7页
  • 作者

    Jianxin Wu; Tong Wang; Zheng Bao;

  • 作者单位

    National Lab of Radar Signal Processing, Xidian University, Xi'an 710071, China;

    National Lab of Radar Signal Processing, Xidian University, Xi'an 710071, China;

    National Lab of Radar Signal Processing, Xidian University, Xi'an 710071, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Array signal processing; DOA estimation; Root MUSIC;

    机译:阵列信号处理;DOA估算;根音乐;

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