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Cross-polarization interference cancellation arrangement for digital radio channels

  • US 4,577,330 A
  • Filed: 04/19/1984
  • Issued: 03/18/1986
  • Est. Priority Date: 04/19/1984
  • Status: Expired due to Term
First Claim
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1. A cross-polarization interference cancellation arrangement comprising:

  • a first and a second input terminal capable of receiving a first and a second orthogonally polarized baseband digital input signal, respectively;

    a first and a second output terminal;

    canceller means connected to the first and second input terminals and responsive to a received first and second orthogonally polarized baseband input signal for determining therefrom a first and a second estimate, respectively, of a main lobe of a pulse response of the respective first and second input signals, and for generating from the first and second estimates a respective first and second cancellation output signal of a proper phase and amplitude which is introduced into the second and first orthogonally polarized input signals, respectively, to generate respective second and first canceller means output signals wherein the main lobe of an interfering orthogonally polarized signal is substantially cancelled; and

    equalizer means responsive to the first and second canceller means output signals for substantially equalizing therein any intersymbol and cross-rail interference components for providing a resultant first and second equalizer means output signal to the first and second output terminals, respectively.

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