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System and method of radio communications with an up-down digital signal link

  • US 5,987,060 A
  • Filed: 06/13/1997
  • Issued: 11/16/1999
  • Est. Priority Date: 06/13/1997
  • Status: Expired due to Term
First Claim
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1. A method of radio communications with an up-down signal link comprising the steps of:

  • a) receiving a downstream signal in a receiver portion of an outdoor unit;

    b) producing in the receiver portion of the outdoor unit an intermediate frequency (IF) signal from the downstream signal;

    c) processing the IF signal in the receiver portion of the outdoor unit to produce a clean line code signal;

    d) processing the clean line code signal in the receiver portion of the outdoor unit to produce a modulated signal; and

    e) providing the modulated signal via an interface portion of the down-link to an indoor unit to be converted to a binary signal,wherein the producing and processing, respectively, of the IF, clean line code and modulated signals in the outdoor unit provides a high, constant signal-to-noise ratio on the down-link.

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