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Interference cancellation method and apparatus

  • US 4,412,341 A
  • Filed: 11/18/1981
  • Issued: 10/25/1983
  • Est. Priority Date: 11/18/1981
  • Status: Expired due to Fees
First Claim
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1. Apparatus for processing an interference-corrupted signal representing a plurality of data signal values, said interference-corrupted signal having a frequency spectrum Y(ω

  • )=|Y(ω

    )|ejθ

    .sbsp.Y.sup.(.omega.), said apparatus comprisingmeans for generating in response to said interference-corrupted signal a phase-compensated signal whose frequency spectrum is a function of |Y(ω

    )| and is substantially independent of θ

    Y

    ),canceller means for forming in response to a stream of tentative decisions as to said signal values a cancellation signal representing the interference in said phase-compensated signal, said tentative decisions having been formed in response to said interference-corrupted signal, andmeans for forming a stream of final decisions as to said signal values in response to said phase-compensated and cancellation signals.

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