Blind source separation based on combined direction finding and constant modulus properties
Alle-Jan van der Veen · 2002
In the blind separation of instantaneous mixtures of multiple cochannel signals using an antenna array, two types of techniques have been used: that based on properties of the array manifold, or based on properties of the signals. A well-studied example of the first type is the ESPRIT algorithm, which exploits the parametric structure of the array manifold. A representative of the second type is ACMA, which gives algebraic expressions for the separation of sources based on their constant modulus property, valid for phase-modulated sources. We show that the two properties can be combined into a single algorithm.