Single-channel blind signal separation of filtered MPSK signals

A processing architecture for the blind separation of multiple, pulse-shaped MPSK signals received by a single sensor is presented. The processor employs oversampling and tapped delay lines to turn a convolutive demixing problem into one of instantaneous blind demixing that can be solved by means of a conventional ICA algorithm. The processor is able to recover each signal as if it alone impinged on the sensor. Examples of processing both simulated data and real-world, off-air data are given.