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-chann el BPSK signals arriving at an antenna array. Our method involves two steps. In the first step, the received data vectors at the output of t he 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 bel ongs, we estimate the bits transmitted at that instant. Computer simul ations are used to study the performance of our method.