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Blind signal separation using I and Q components

  • US 20060066482A1
  • Filed: 09/22/2005
  • Published: 03/30/2006
  • Est. Priority Date: 09/23/2004
  • Status: Active Grant
First Claim
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1. A communications device for separating source signals provided by M signal sources, the communications device comprising:

  • an antenna array comprising N antenna elements for receiving at least N different summations of the M source signals;

    a respective in-phase and quadrature module connected downstream to each antenna element for separating each one of the N different summations of the M source signals received thereby into an in-phase and quadrature component set;

    a receiver assembly connected downstream to each in-phase and quadrature module for receiving the at least N in-phase and quadrature component sets for the at least N different summations of the M source signals; and

    a blind signal separation processor connected downstream to said receiver assembly for forming a mixing matrix comprising at least 2N different summations of the M source signals, with each in-phase and quadrature component set providing 2 inputs into the mixing matrix, the mixing matrix having a rank equal up to 2N, said blind signal separation processor for separating desired source signals from the mixing matrix.

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