Distortion compensation apparatus and method
AssigneeFujitsu Limited
InventorShin Watanabe
Life of this patent
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Abstract
The distortion compensation apparatus includes: a branching unit to branch a part of the output signal of an amplifier to a signal path to a distortion compensating unit; a switch to pass the output signal of the amplifier to the interference or branching unit; and a controlling unit to control an amount of the compensation of the distortion under a pass-permitted state in which the switch passes the output signal in response to a result of measurement of a signal transmitted through the signal path under a state where the switch is in an interruption state.
Claims9
A distortion compensation apparatus, comprising:
- a distortion compensating unit to perform compensation of distortion caused in an amplifier in response to a result of comparison between an input signal to the amplifier and an output signal from the amplifier;
- a branching unit to branch apart of the output signal to a signal path to the distortion compensating unit;
- a switch to interrupt or pass the output signal inputted to the branching unit;
- and
- a controlling unit to control an amount of the compensation of the distortion under a pass-permitted state in which the switch passes the output signal in response to a result of measurement of a signal transmitted to the distortion compensating unit through the signal path under an interruption state in which the switch interrupts the output signal.
A distortion compensation method for use in an apparatus including:
- a distortion compensating unit to perform compensation of distortion caused in an amplifier in response to a result of comparison between an input signal to the amplifier and an output signal from the amplifier;
- and a branching unit to branch a part of the output signal to a signal path to the distortion compensating unit, the distortion compensation method comprising:
- measuring a signal transmitted to the distortion compensating unit through the signal path under an interruption state in which the output signal passes to the branching unit;
- and
- controlling an amount of the compensation of the distortion under a pass-permitted state in which the output signal is made to pass to the branching unit, in response to the result of the measurement.
Dependencies are inferred from the claim text.