A blind signal separation method for multiuser communications
Luis Castedo, Carlos J. Escudero, Adriana Dapena · IEEE Transactions on Signal Processing · 1997
A new approach based on the constant modulus (CM) criterion is proposed to separate instantaneous linear mixtures of signals using a linear memoryless multiple input multiple output (MIMO) system. Even though a nonconvex cost function is minimized, analyses show that minima correspond to parameter settings where perfect separation is achieved.