Wireless devices and systems including examples of compensating power amplifier noise

A power amplifier, noise technology, applied in transmission systems, digital transmission systems, advanced technologies, etc., can solve problems such as methods that have not yet been set

Active Publication Date: 2020-12-25
MICRON TECH INC
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

5G promises increased speed and ubiquity, but methods...

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  • Wireless devices and systems including examples of compensating power amplifier noise
  • Wireless devices and systems including examples of compensating power amplifier noise
  • Wireless devices and systems including examples of compensating power amplifier noise

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Embodiment Construction

[0033] Examples described herein include wireless devices and systems that may include examples of compensating for power amplifier noise. Digital predistortion (DPD) filters can be used to compensate for non-linear power amplifier noise, such as that found in wireless devices and systems with power amplifiers. For example, RF power amplifiers (PAs) may be used in transmitters of wireless devices and systems to amplify wireless transmission signals to be transmitted. This non-linear power amplifier noise from the power amplifier can be difficult to model, and therefore, a DPD filter is used to compensate for this non-linear power amplifier noise, thereby reducing the noise introduced from the power amplifier into the wireless transmission signal during transmission. Conventional wireless devices and systems can utilize specially designed hardware to implement DPD filters in wireless devices or systems. For example, DPD filters may be implemented in a variety of hardware platf...

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Abstract

Examples described herein include methods, devices, and systems which may compensate input data for non-linear power amplifier noise to generate compensated input data. In compensating the noise, during an uplink transmission time interval (TTI), a switch path is activated to provide amplified input data to a receiver stage including a coefficient calculator. The coefficient calculator may calculate an error representative of the noise based partly on the input signal to be transmitted and a feedback signal to generate coefficient data associated with the power amplifier noise. The feedback signal is provided, after processing through the receiver, to a coefficient calculator. During an uplink TTI, the amplified input data may also be transmitted as the RF wireless transmission via an RF antenna. During a downlink TTI, the switch path may be deactivated and the receiver stage may receive an additional RF wireless transmission to be processed in the receiver stage.

Description

Background technique [0001] Digital signal processing for wireless communications, such as digital baseband processing or digital front-end implementations, can be implemented using hardware (eg, silicon) computing platforms. For example, multimedia processing and digital radio frequency (RF) processing can be implemented by an application specific integrated circuit (ASIC) that can implement a digital front end of a wireless transceiver. A variety of hardware platforms are available to implement digital signal processing, such as an ASIC, a digital signal processor (DSP) implemented as part of a field programmable gate array (FPGA), or a system on a chip (SoC). However, each of these solutions typically requires the implementation of hardware implementation specific custom signal processing methods. For example, a digital signal processor may implement certain parts of the digital processing at the cellular base station, such as filtering interference based on environmental ...

Claims

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Application Information

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IPC IPC(8): H04B1/44H04B1/62H04B1/04
CPCH04B1/0475H04B1/123H04B1/525H04L5/0091H04L5/1469H04B2001/0425H04L1/0041H04L1/0045H04B1/44H04B1/62H04B2001/0408H04B1/0483H04L1/0057H03M13/156H04L1/0071H04L5/14
Inventor 罗法隆J·赫里茨J·卡明斯T·施米茨
Owner MICRON TECH INC
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