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公开(公告)号：US11012105B2
公开(公告)日：2021-05-18
申请号：US16646776
申请日：2017-09-12
Applicant: INTEL CORPORATION
Inventor： Andreas Langer , Christoph Hepp , Andreas Menkhoff , Gunther Kraut
Abstract: Systems, circuitries, and methods for predistorting a digital signal in a transmit chain based on a predistortion function are provided in which the function is determined based on a first digital signal or a first transmit chain state. A method includes: receiving a second digital signal that is input to the transmit chain, wherein the transmit chain is characterized by a present transmit chain state; performing a first operation on the second digital signal to generate an adapted digital signal, wherein the first operation is based on either a relationship between the first digital signal and the second digital signal, or a relationship between the first transmit chain state and the present transmit chain state; predistorting the adapted digital signal based on the predistortion function; and performing a second operation on the predistorted adapted signal, wherein the second operation corresponds to an inverse of the first operation.
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公开(公告)号：US20200295790A1
公开(公告)日：2020-09-17
申请号：US16646776
申请日：2017-09-12
Applicant: INTEL CORPORATION
Inventor： Andreas Langer , Christoph Hepp , Andreas Menkhoff , Gunther Kraut
Abstract: Systems, circuitries, and methods for predistorting a digital signal in a transmit chain based on a predistortion function are provided in which the function is determined based on a first digital signal or a first transmit chain state. A method includes: receiving a second digital signal that is input to the transmit chain, wherein the transmit chain is characterized by a present transmit chain state; performing a first operation on the second digital signal to generate an adapted digital signal, wherein the first operation is based on either a relationship between the first digital signal and the second digital signal, or a relationship between the first transmit chain state and the present transmit chain state; predistorting the adapted digital signal based on the predistortion function; and performing a second operation on the predistorted adapted signal, wherein the second operation corresponds to an inverse of the first operation.
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公开(公告)号：US11258640B2
公开(公告)日：2022-02-22
申请号：US16958060
申请日：2018-03-30
Applicant: Intel Corporation
Inventor： Armando Cova , Christoph Hepp , Gunther Kraut , Andreas Langer
Abstract: An apparatus for a mobile communication device adapted for digital pre-distortion that includes a memory and a processor operatively coupled to the memory of the processor. The processor receives a first input signal and also receives a first output signal from a power amplifier that is based on the first input signal. The processor additionally varies compression applied to a second input signal based on the first output signal of the power amplifier, generates a distortion compensation vector for the second input signal based on the first output signal of the power amplifier, and also varies an input excitation signal supplied to the power amplifier based on the first output signal of the power amplifier.
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