BLIND SEPARATION OF MULTIPLE COCHANNNEL BPSK SIGNALS ARRIVING AT AN ANTENNA-ARRAY

In this letter, we propose a method for blind separation of d co-channel BPSK signals arriving at an antenna array. Our method involves two steps. In the first step, the received data vectors at the output of the array is grouped into 2(d) clusters. In the second step, we assign the 2(d) d-tuples with +/-1 elements to these clusters in a consistent fashion. From the knowledge of the cluster to which a data vector belongs, we estimate the bits transmitted at that instant. Computer simulations are used to study the performance of our method.