De-mixing post-nonlinear mixed signals involves using inverse representations on n-tuples and determining series of m-tuples from reverse representation images by linear de-mixing

摘要

The method involves representing the mixed signal with a series of n-tuples and describing the non-linear part of the post-nonlinear mixing with n representations of an image and an original. An approximate inverse of each representation is determined, the inverse representations are used on the n-tuples and the series of m-tuples determined using a linear de-mixing technique from the images of the n reverse representations. The method involves representing the mixed signal with a series of n-tuples and describing the non-linear part of the post-nonlinear mixing with n representations of an image and an original, whereby an n-tuple results from the n images of the n representations and the originals of the n representations depend linearly on an m-tuple to be determined. An approximate inverse of each representation is determined that allows the existence of an image at least approximately linearly related to the m-tuple to be determined, the inverse representations are used on the n-tuples and the series of m-tuples determined using a linear de-mixing technique from the images of the n reverse representations. An Independent claim is also included for an arrangement for de-mixing post-nonlinear mixed signals.