InterDigital Inc (IDCC)

[Gamco]

United States Patent 8,031,117
Goldberg October 4, 2011

--------------------------------------------------------------------------------
Blind signal separation using polarized antenna elements


Abstract
A communications device for separating source signals provided by M signal sources includes an antenna array comprising N antenna elements for receiving at least N different summations of the M source signals. At least two of the N antenna elements are correlated and have 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. A receiver is connected to the antenna array for receiving the at least N different summations of the M source signals. A blind signal separation processor is connected to the receiver for forming a mixing matrix comprising the at least N different summations of the M source signals, and for separating desired source signals from the mixing matrix. The mixing matrix has a rank equal to at least N.


--------------------------------------------------------------------------------
Inventors: Goldberg; Steven J. (Downingtown, PA)
Assignee: InterDigital Technology Corporation (Wilmingotn, DE)

Appl. No.: 11/233,329
Filed: September 22, 2005

--------------------------------------------------------------------------------

Related U.S. Patent Documents

--------------------------------------------------------------------------------

Application Number Filing Date Patent Number Issue Date
60612546 Sep., 2004
60612435 Sep., 2004
60612433 Sep., 2004
60612550 Sep., 2004
60612632 Sep., 2004
60612548 Sep., 2004
60612471 Sep., 2004
60612551 Sep., 2004
60612469 Sep., 2004
60612547 Sep., 2004
60615338 Oct., 2004
60615260 Oct., 2004
60620775 Oct., 2004
60620776 Oct., 2004
60620862 Oct., 2004
60621113 Oct., 2004
60639223 Dec., 2004


--------------------------------------------------------------------------------

Current U.S. Class: 342/378 ; 342/377; 702/190
Current International Class: G01S 3/16 (20060101); H01Q 3/00 (20060101)
Field of Search: 342/373,377-378,380,382-383 702/190-197,FOR164

PPP