Title :
Blind separation of discrete sources
Author :
Grellier, Olivier ; Comon, Pierre
Author_Institution :
CNRS, Sophia-Antipolis, France
Abstract :
A polynomial criterion is proposed to perform blind source separation, extending previous works to MIMO systems. The criterion is proved to be asymptotically MAP-equivalent in presence of PSK sources. An efficient minimization algorithm dedicated to polynomial criteria is then developed, improving on the fixed-step stochastic gradient previously utilized in this framework.
Keywords :
MIMO systems; array signal processing; direction-of-arrival estimation; linear antenna arrays; maximum likelihood estimation; minimisation; phase shift keying; polynomials; quadrature amplitude modulation; stochastic processes; 16-QAM; 4-QAM; MIMO systems; PSK sources; asymptotically MAP-equivalent; blind source separation; discrete sources; efficient minimization algorithm; fixed-step stochastic gradient; polynomial criterion; spatial diversity; uniformly spaced linear array; Air traffic control; Blind source separation; Context; MIMO; Minimization methods; Mobile communication; Phase shift keying; Polarization; Polynomials; Stochastic processes;
Journal_Title :
Signal Processing Letters, IEEE
