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公开(公告)号：US20240364569A1
公开(公告)日：2024-10-31
申请号：US18632062
申请日：2024-04-10
Applicant: Texas Instruments Incorporated
Inventor： Raju Kharataram Chaudhari , Aswath VS , Sriram Murali , Jaiganesh Balakrishnan , Sreenath Narayanan Potty , Kapil Kumar
CPC classification number: H04L27/2618 , H04B1/0475
Abstract: An example apparatus includes: crest factor reduction circuitry having a signal input and a peak cancellation waveform input; and peak cancellation waveform generator circuitry including: carrier profile analyzer circuitry having a signal input coupled to the signal input of the crest factor reduction circuitry, and having a carrier profile output; waveform construction circuitry having a carrier profile input coupled to the carrier profile output of the carrier profile analyzer circuitry, having a second input, and having a peak cancellation waveform output coupled to the peak cancellation waveform input of the crest factor reduction circuitry; and profile change detector circuitry having a carrier profile input coupled to the carrier profile output of the carrier profile analyzer circuitry, and having an output coupled to the second input of the waveform construction circuitry.
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公开(公告)号：US20240364373A1
公开(公告)日：2024-10-31
申请号：US18309377
申请日：2023-04-28
Applicant: QUALCOMM Incorporated
Inventor： Amit MOSES , Gideon Shlomo KUTZ , Aviv REGEV , Ronen SHAKED , Yaniv EISTEIN
IPC: H04B1/04
CPC classification number: H04B1/0475 , H04B2001/0425
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may precode communications with a precoding configured to improve non-linearity (NL). Some aspects more specifically relate to a user equipment (UE) obtaining power amplifier (PA) NL coefficients associated with NL of PAs of a network node. The UE may transmit an indication of the PA NL coefficients to the network node, which may use the indication to select precoding configured to improve reception of communications transmitted with PA NL or to improve decoding of communications transmitted using the precoding.
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公开(公告)号：US20240348273A1
公开(公告)日：2024-10-17
申请号：US18422913
申请日：2024-01-25
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Paul Nicholas Fletcher , Donghan Kim , Fei Tong , Ziming He
CPC classification number: H04B1/0475 , H03F1/3241 , H03F3/245 , H03F2200/451 , H04B2001/0408
Abstract: A distortion apparatus for a power amplifier comprises: pre-distortion circuitry that comprises a memory polynomial look-up-table (LUT) circuit; and post-distortion circuitry that updates the pre-distortion circuitry based on an output of the power amplifier. The pre-distortion circuitry comprises a plurality of LUTs. Each LUT corresponds to a different memory depth of a memory polynomial of a Volterra series. Each LUT indexed by an instantaneous power of an input sample delayed by an amount corresponds to a respective memory depth of each LUT. An output of the memory polynomial LUT circuit corresponds to a summation of an output of each LUT multiplied by the input sample delayed by the amount corresponding to the respective memory depth of each LUT, and an output of the pre-distortion circuitry is provided to the power amplifier.
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公开(公告)号：USRE50175E1
公开(公告)日：2024-10-15
申请号：US18138436
申请日：2023-04-24
Applicant: Outdoor Wireless Networks LLC
Inventor： Patrick Braun , Joerg Stefanik , Mohammed Dokni , Peter Schmid , Rainer Friedrich
CPC classification number: H03F1/3247 , H03F3/189 , H03F3/24 , H03F3/72 , H04B1/0028 , H04B1/0475 , H04L27/367 , H03F2200/111 , H03F2203/7209 , H04B2001/0425 , H04J3/047
Abstract: A method is provided. The method, comprises: power amplifying, with at least two parallel power amplifiers, at least two pre-distorted signals each corresponding to a unique transmit band, wherein each power amplifier operates in a unique transmit band; and pre-distorting, with a single pre-distortion system, at least two signals in different transmit bands, where the pre-distortion of each of the at least two signals is based upon a portion of a corresponding power amplified, pre-distorted signal, and where the pre-distortion diminishes certain IMD products in the corresponding power amplified, pre-distorted signal.
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公开(公告)号：US12113492B2
公开(公告)日：2024-10-08
申请号：US17466334
申请日：2021-09-03
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Qianfu Cheng , Guangjian Wang
CPC classification number: H03F3/24 , H03F1/0227 , H04B1/0475 , H03F2200/102 , H03F2200/451 , H04B2001/0425
Abstract: This application provides a power amplification apparatus, a beamforming system, a transmitter, and a base station. The apparatus includes a power amplifier that amplifies a first signal, a power supply, and a power supply modulator that controls, based on an envelope signal corresponding to the first signal, an operating voltage provided by the power supply to the power amplifier. The apparatus is further configured to amplify a second signal. The first signal is generated based on the part of a target amplified signal whose amplitude falls within a preset amplitude range. The second signal is generated based on the part of the target amplified signal whose amplitude falls beyond the preset amplitude range.
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公开(公告)号：US20240333327A1
公开(公告)日：2024-10-03
申请号：US18623101
申请日：2024-04-01
Inventor： Rafik ZAYANI
CPC classification number: H04B1/12 , H04B1/0475 , H04B1/109 , H04W88/08
Abstract: The invention relates to such an access point (10) comprising:
a determination module (12) for determining a signal distortion caused by the own hardware impairments thereof,
a transmission module (14), via a fronthaul link comprising a plurality of access points in series, ordered along a predetermined direction of travel to the central unit of a base station, of said distortion to another access point, or to the central unit, following it within said fronthaul bond; and/or
a reception module (16) for receiving and taking into account said distortion of an access point preceding it within said fronthaul link, so as to determine the local precoding filters of said access point configured to cancel said distortion of said access point preceding it.
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公开(公告)号：US12101130B2
公开(公告)日：2024-09-24
申请号：US17653800
申请日：2022-03-07
Applicant: The Boeing Company , HRL Laboratories, LLC
Inventor： Peter Wittenberg , Peter Petre
CPC classification number: H04B13/02 , H04B1/0475 , H04B1/10
Abstract: A method, apparatus, system, and computer program product for processing low frequency signals. A communications system comprising a low frequency receiver, a denoiser, and a signal extractor. The low frequency receiver receives low frequency signals in which a communications signal is expected. The denoiser is in communication with the low frequency receiver. The denoiser denoises the low frequency signals received from the low frequency receiver. The denoising results in a generation of denoised signals. The signal extractor in communication with the denoiser. The signal extractor extracts the communications signal from the denoised signal.
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公开(公告)号：US20240313827A1
公开(公告)日：2024-09-19
申请号：US18607234
申请日：2024-03-15
Applicant: CommScope Technologies LLC
Inventor： Rainer Friedrich , Patrick Braun , Karl-Heinz Fackler , Alfons Dussmann , Joerg Stefanik , Christoph Gollinger
CPC classification number: H04B7/022 , H04B1/0475 , H04B2001/0408
Abstract: Systems and methods for a modular access point are provided. In certain embodiments, a device includes a housing. Further, the device includes a baseband card (BBC) mounted within the housing, wherein the modular BBC has one or more interfaces. Additionally, the device includes one or more radio modules, wherein at least one radio module in the one or more radio modules is coupled to an interface in the one or more interfaces, wherein the one or more interfaces are capable of connecting to multiple different power classes of radio modules. Moreover, the device includes one or more additional components in communication with the modular BBC through the one or more interfaces that support the operation of a radio module in a respective power class.
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公开(公告)号：US20240313711A1
公开(公告)日：2024-09-19
申请号：US18413290
申请日：2024-01-16
Applicant: Qorvo US, Inc.
Inventor： George Maxim , Nadim Khlat , Chong Woo , Baker Scott
CPC classification number: H03F1/3282 , H04B1/0475 , H03F2200/102 , H03F2200/105 , H03F2201/3233 , H04B2001/0425
Abstract: Distortion correction for fast supply voltage changes in a power amplifier is disclosed. In one aspect, analog predistortion in the power amplifier to maintain linearity of the power amplifier is based on a supply voltage, thereby avoiding a need to write into registers. Further, the supply voltage with its changes may be used to set the predistortion levels both for amplitude and phase. By using the supply voltage, long signals writing to registers in the power amplifier or power management circuit may be avoided, resulting in faster application of predistortion. The faster application of the predistortion works nicely with symbol or even sub-symbol adjustments to the supply voltage resulting in greater efficiency in the power amplifier.
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公开(公告)号：US12095488B2
公开(公告)日：2024-09-17
申请号：US17875331
申请日：2022-07-27
Applicant: AT&T Intellectual Property I, L.P.
Inventor： SaiRamesh Nammi
CPC classification number: H04B1/0475 , H04B17/104 , H04B17/13 , H04W52/52 , H04B2001/0425
Abstract: Various embodiments disclosed herein provide for a low complexity transmitter structure for active antenna arrays by reducing the number of digital predistortion extraction loops that need to be performed. Digital predistortion (DPD) corrects any non-linearities in a power amplifier. By determining which power amplifiers have similar characteristics in an array, and thus may use similar predistortion coefficients, once the DPD coefficients are determine for one of the grouped power amplifiers, DPD can be performed on each of the grouped power amplifiers based on the DPD coefficients.
