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Automatic transmission level control device

  • US 5,257,415 A
  • Filed: 03/16/1992
  • Issued: 10/26/1993
  • Est. Priority Date: 03/20/1991
  • Status: Expired due to Fees
First Claim
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1. An automatic transmission level control device used in a multi-carrier communication system, comprising:

  • gain control means for controlling a level of a transmission signal;

    transmission means, coupled to said gain control means for amplifying the transmission signal;

    hybrid circuit means, coupled to said transmission means, for extracting a part of power of the transmission signal from said transmission means;

    level control means, coupled to said gain control means and said hybrid circuit means, for adjusting a gain of said gain control means on the basis of a magnitude of the transmission signal and data indicating a number of carriers included in the transmission signal; and

    carrier detection means, coupled to said hybrid circuit means and said level control means, for filtering the transmission signal and for generating said data indicating the number of carriers included therein.

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