Underdetermined and incompletely sparse blind signal extraction

作者：Xie, Sheng-Li^*; Sun, Gong-Xian; Xiao, Ming; Fu, Yu-Li; Lü, Jun

来源：Acta Electronica Sinica, 2010, 38(5): 1028-1031.

• Blind signal extraction
• Blind signal extraction (BSE)
• Blind source extraction
• Minimum interference
• Mixing matrix
• Single source intervals
• Sparse representation
• Underdetermined blind signal separations

Two-step strategy has become a fundamental method for underdetermined blind signal separation and the estimation of mixing matrix is a prerequisite for the source's recovery. This paper proposes a two-step blind source extraction method for incompletely sparse case. The approach firstly estimates the basis vectors (columns of matrix) of partial sources using single-source intervals and then extracts the corresponding sources with minimum interference;it doesn't depend on other basis vector except the corresponding basis vector, so it avoids the essential condition the matrix is recoverable. Several simulation experimental results demonstrate its performance and practices.

• 出版日期2010-5
• 单位华南理工大学