A discrete signal separate algorithm for wireless communication

Source interference is often occurred in wireless communication. This paper studied the problem of blindly estimating multiple digital co-channel communication signals using an antenna array. When the signals are constrained to a finite alphabet, this paper introduced a new cost function, and introduced decision function that was widely used in signal equalization to this function, this improved the algorithm's performance significantly. We verified the validity of the algorithm through an experiment of separate two source of independent 4-PAM source.