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Signal receiver having adaptive interfering signal cancellation

  • US 6,650,271 B1
  • Filed: 11/24/1997
  • Issued: 11/18/2003
  • Est. Priority Date: 11/24/1997
  • Status: Expired due to Term
First Claim
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1. A receiver, comprising:

  • a plurality of elements adapted to receive an interfering signal from both a direct path and from an indirect path, such direct and indirect paths having both differential Doppler frequency and differential time delay induced phase shifts;

    a plurality of receiver sections, each one of the receiver sections being fed by a corresponding one of the elements;

    an adaptive interfering signal canceler fed by the plurality of receiver sections for providing a beam forming network to suppress both the direct and indirect paths of the interfering signal, such canceler separating the received signal into a plurality of sub-intervals, determining frequency components in each of the sub-intervals over a predetermined frequency bandwidth, forming a plurality of frequency sub-band beam forming networks from the frequency components for each of a corresponding one of the sub-intervals to suppress the differential time delay phase shifts in the received interfering signal, and producing a composite output signal from the plurality of frequency sub-band beam forming networks over the plurality of sub-intervals to suppress the differential Doppler frequency induced phase shifts in the received interfering signal.

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