  We present the PolEMICA [Aumont & Macias-Perez 2007] (Polarized
Expectation-Maximization Independent Component Analysis) algorithm which is an
extension to polarization of the SMICA [Delabrouille et al. 2003] temperature
component separation method. This algorithm allows us to estimate blindly in
harmonic space multiple physical components from multi-detectors polarized sky
maps. Assuming a linear noisy mixture of components we are able to reconstruct
jointly the electromagnetic spectra of the components for each mode T, E and B,
as well as the temperature and polarization spatial power spectra, TT, EE, BB,
TE, TB and EB for each of the physical components and for the noise on each of
the detectors. This has been tested using full sky simulations of the Planck
satellite polarized channels for a 14-months nominal mission assuming a simple
linear sky model including CMB, and optionally Galactic synchrotron and dust
emissions.
