Automatic transmission level control device
First Claim
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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Accused Products
Abstract
An automatic transmission level control device used in a multi-carrier communication system includes a gain controller for controlling a level of a transmission signal, a transmitter for amplifying the transmission signal, and a hybrid circuit for extracting a part of power of the transmission signal from the transmitter. A level control circuit adjusts a gain of the gain controller on the basis of a magnitude of the transmission signal and data indicating a number of carriers included in the transmission signal. A carrier detection unit filters the transmission signal and generates the data indicating the number of carriers included therein.
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Citations
14 Claims
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1. An automatic transmission level control device used in a multi-carrier communication system, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification