Title :
Robust non-unitary joint block diagonalisation for non-square mixture
Author :
Xiao-Guang Yuan ; Wei-Tao Zhang ; Jiao Guo
Author_Institution :
Sch. of Electron. Eng., Xidian Univ., Xi´an, China
Abstract :
The non-unitary joint block diagonalisation (JBD) of a set of given matrices in non-square mixing situation is addressed. To eliminate the degenerate solutions, the JBD problem is reformulated as a multicriteria optimisation model. The resulting algorithm is numerically robust for non-square mixing matrix estimation. Moreover, it outperforms the existing JBD algorithms in terms of convergence rate and stability, which has been verified by simulation results.
Keywords :
array signal processing; estimation theory; matrix algebra; optimisation; stability; JBD algorithms; convergence rate; degenerate solutions elimination; multicriteria optimisation model; nonsquare mixing matrix estimation; nonsquare mixing situation; robust nonunitary joint block diagonalisation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2015.1123
