A method of the mixing matrix estimation in underdetermined source separation is proposed,which is based on the linear clustering of sparse component.

Algorithms and Applications of Underdetermined Semi-blind Source Separation;

A novel two-stage approach to underdetermined blind speech separation is presented,which is based on sparse representation.

SCA solves the problem of underdetermined BSS that ICA doesn t solve.

The computing methods of contact forces for the under-deterministic positioning, deterministic positioning, and over-deterministic positioning are derived respectively.

At the transmitter,a key series is used to encrypt chaotic source signals and construct an underdetermined model;at the receiver,the key series is first used to transform the underdetermined problem into the positive definite one,and the blind separation technology is then used t.