Flexible Parametrization of Postnonlinear Mixtures Model in Blind Sources Separation
D.-T. Pham · IEEE Signal Processing Letters · 2004
This letter introduces a flexible parametrization for the nonlinear compensator in the postnonlinear mixture model. The idea is to parametrize not the compensator but a set of quantiles of the distribution of its output. They are specified by the density-quantiles which are parametrized through a spline basis. Good results can be achieved with only a few splines.