Digital signal compensation
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorWeixuan Hu
Life of this patent
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Abstract
The present disclosure provides a method and device for digital signal compensation. The method for signal compensation includes: generating a digital compensation signal at least partially based on smoothing, in real time, a digital input signal or a signal that is derived from the digital input signal; delaying the digital input signal such that the delayed digital input signal is aligned with the digital compensation signal in the time domain; and generating a digital compensated signal by combining the delayed digital input signal with the digital compensation signal.
Claims18
A method for signal compensation, the method comprising:
- generating a first processed signal at least partially based on smoothing, in real time, a digital input signal or a signal that is derived from the digital input signal;
- and
- determining one of multiple power ranges corresponding to the first processed signal;
- generating a digital compensation signal at least partially based on the first processed signal and corresponding to a determined power range;
- delaying the digital input signal such that the delayed digital input signal is aligned with the digital compensation signal in a time domain;
- and
- generating a digital compensated signal by combining the delayed digital input signal with the digital compensation signal.
A device for signal compensation, the device comprising:
- a processor;
- and
- a memory having instructions stored thereon which, when executed by the processor, cause the processor to;
- generating a first processed signal at least partially based on smoothing, in real time, a digital input signal or a signal that is derived from the digital input signal;
- and
- determining one of multiple power ranges corresponding to the first processed signal;
- generating a digital compensation signal at least partially based on the first processed signal and corresponding to a determined power range;
- delaying the digital input signal such that the delayed digital input signal is aligned with the digital compensation signal in a time domain;
- and
- generating a digital compensated signal by combining the delayed digital input signal with the digital compensation signal.
A power amplifier, comprising:
- a processor;
- and
- a memory having instructions stored thereon which, when executed by the processor, cause the processor to:
- generating a first processed signal at least partially based on smoothing, in real time, a digital input signal or a signal that is derived from the digital input signal;
- and
- determining one of multiple power ranges corresponding to the first processed signal;
- generating a digital compensation signal at least partially based on the first processed signal and corresponding to a determined power range;
- delaying the digital input signal such that the delayed digital input signal is aligned with the digital compensation signal in a time domain;
- and
- generating a digital compensated signal by combining the delayed digital input signal with the digital compensation signal;
- a digital to RF converter configured to convert a digital compensated signal into a compensated RF signal;
- and
- a GaN power amplifier configured to amplify the compensated RF signal for radio transmission.
Dependencies are inferred from the claim text.