Distortion compensation device and distortion compensation method
AssigneeFujitsu Limited
InventorKohei Ohta
Life of this patent
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Abstract
A distortion compensation device coupled to an amplifier configured to amplify power of a transmission signal, the distortion compensation device including a memory, and a processor coupled to the memory and the processor configured to obtain the transmission signal sampled with a first sampling rate, obtain the transmission signal sampled with a second sampling rate, the second sampling rate being higher than the first sampling rate, extract an odd-order harmonic from the transmission signal sampled with the second sampling rate, correct a phase and an amplitude of the odd-order harmonic, add the corrected odd-order harmonic to the transmission signal with a first sampling rate, and output, toward the amplifier, the transmission signal to which the corrected odd-order harmonic is added.
Claims6
A distortion compensation device coupled to an amplifier configured to amplify power of a transmission signal, the distortion compensation device comprising:
- a memory;
- and
- a processor coupled to the memory and the processor configured to:
- obtain the transmission signal sampled with a first sampling rate;
- obtain the transmission signal sampled with a second sampling rate, the second sampling rate being higher than the first sampling rate;
- extract an odd-order harmonic from the transmission signal sampled with the second sampling rate;
- correct a phase and an amplitude of the odd-order harmonic;
- add the corrected odd-order harmonic to the transmission signal with the first sampling rate;
- and
- output, toward the amplifier, the transmission signal to which the corrected odd-order harmonic is added.
A compensating distortion method executed by a computer, the compensating distortion method comprising:
- obtaining a transmission signal sampled with a first sampling rate;
- obtaining the transmission signal sampled with a second sampling rate, the second sampling rate being higher than the first sampling rate;
- extracting an odd-order harmonic from the transmission signal sampled with the second sampling rate;
- correcting a phase and an amplitude of the odd-order harmonic;
- adding the corrected odd-order harmonic to the transmission signal with the first sampling rate;
- and
- outputting, toward an amplifier coupled to the computer, the transmission signal to which the corrected odd-order harmonic is added.
Dependencies are inferred from the claim text.