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Multipath reduction system

  • US 4,797,950 A
  • Filed: 10/02/1987
  • Issued: 01/10/1989
  • Est. Priority Date: 11/10/1986
  • Status: Expired due to Term
First Claim
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1. A signal processing system for reducing distortion effects in communication receivers due to multipath, said system comprising:

  • adaptive array means having;

    at least two antenna elements;

    weighting means coupled to the antenna elements for selectively weighting the received signals by a selected weight factor; and

    summing means for adding together the signals from the weighting means for generating an adaptive array output signal;

    envelope detector means coupled to receive said adaptive array output signal for generating the amplitude envelope of said adaptive array output signal; and

    first multiplier means coupled to receive the envelope detector means output signal and coupled to receive the adaptive array output signal for generating a feedback signal;

    said adaptive array means also including a second multiplier means for each weighting means coupled to receive the feedback signal and coupled to receive the corresponding weighting means input signal, the output signal of which is coupled to a corresponding integrator means whose output signal is coupled to the corresponding weighting means for automatically redefining the weight factors.

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