Digital-to-analog conversion system
AssigneeIntel Corporation
InventorsDaniel Gruber, Ramon Sanchez, Kameran Azadet, Martin Clara
Life of this patent
Estimating the term…
Abstract
A digital-to-analog conversion system is provided. The digital-to-analog conversion system includes a digital-to-analog converter configured to receive a pre-distorted digital signal from a digital circuit, and to generate an analog signal based on the pre-distorted digital signal. Further, the digital-to-analog conversion system includes a feedback loop for providing a digital feedback signal to the digital circuit. The feedback loop includes an analog-to-digital converter configured to generate the digital feedback signal based on the analog signal, and wherein a sample rate of the analog-to-digital converter is lower than a sample rate of the digital-to-analog converter.
Claims18
A system for processing a transmit signal, comprising:
- a digital pre-distortion circuitry configured to pre-distort a transmit signal;
- a digital-to-analog converter configured to generate an analog signal based on the pre-distorted transmit signal;
- a power amplifier configured to amplify the analog signal for generating an amplified analog signal;
- a feedback loop for providing a digital feedback signal to the digital pre-distortion circuitry,
- wherein the feedback loop comprises an analog-to-digital converter configured to generate the digital feedback signal based on the amplified analog signal,
- wherein the analog-to-digital converter is configured to sample the amplified analog signal at irregular time intervals to generate the digital feedback signal and a sampling rate of the analog-to-digital converter is lower than a sampling rate of the digital-to-analog converter.
A method for processing a transmit signal, comprising:
- pre-distorting, by a digital pre-distortion circuitry, a transmit signal;
- generating, by a digital-to-analog converter, an analog signal based on the pre-distorted transmit signal;
- amplifying, by a power amplifier, the analog signal;
- generating, by an analog-to-digital converter, a digital feedback signal based on the amplified analog signal;
- and
- providing the digital feedback signal to the pre-distortion circuitry,
- wherein the analog-to-digital converter samples the amplified analog signal at irregular time intervals to generate the digital feedback signal and a sampling rate of the analog-to-digital converter is lower than a sampling rate of the digital-to-analog converter.
Dependencies are inferred from the claim text.