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Author:
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Year:
Volume:
Issue:
Blind signals separation based on the power spectral density
Author(s):
LI Ning
,
SHI Tie-lin
Pages:
255
-
259
Year:
2007
Issue:
3
Journal:
JOURNAL OF VIBRATION ENGINEERING
Keyword:
盲信号分离
;
功率谱密度
;
欠定混合
;
超定混合
;
Abstract:
提出一种新的基于功率谱密度的盲信号分离方法.该方法在传感器数与源数关系不明确情况下,且源信号相互独立时,直接通过混合信号功率谱密度函数比值求解混合阵,并通过混合阵判定观测信号是完备混合、超定混合还是欠定混合,由此进一步分离信号.理论分析、仿真数据证明了算法的有效性.同时还仿真了噪声对分离性能的影响.
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