Blind signal separation using polarized antenna elements

A method for operating a communications device for separating source signals provided by M signal sources, the communications device comprising an antenna array, a receiver connected to the antenna array, and a blind signal separation processor connected to the receiver, the method comprising:

• receiving at the antenna array at least N different summations of the M source signals, the antenna array comprising N antenna elements with at least two of the N antenna elements being correlated and having different polarizations for receiving at least two of the N different summations of the M source signals, with N and M being greater than 1;
• providing the at least N different summations of the M source signals to the receiver;
• and
• processing by the blind signal separation processor the at least N different summations of the M source signals received by the receiver, the processing comprising
• forming a mixing matrix comprising the at least N different summations of the M source signals, the mixing matrix having a rank equal to at least N, and
• separating desired source signals from the mixing matrix.