公开(公告)号：US20230318656A1

公开(公告)日：2023-10-05

申请号：US18295264

申请日：2023-04-03

Applicant: MAXLINEAR, INC.

Inventor： Zohaib Mahmood ,  Subramanian Anantharaman Chandrasekarapuram ,  Srivathsa Acharya ,  Gopala Krishna Murthy Vemula ,  Devika Sunilkumar

IPC: H04B1/525 ,  H04B1/12

CPC classification number: H04B1/525 ,  H04B1/123

Abstract: According to an aspect of an embodiment, a base station configured for enhanced receiver sensitivity may comprise a processing device and a receiver. The receiver (Rx) may be configured to receive an Rx output signal in an Rx band. The processing device may be configured to receive the Rx output signal from the receiver on an Rx path and receive a crest factor reduction (CFR) output signal from a CFR on a transmit (Tx) path. The processing device may be configured to calibrate the CFR output signal based on the Rx output signal to generate a non-linear actuation (NA) input signal and generate an intermodulation distortion signal by using an NA function on the NA input signal.

公开(公告)号：US20230276368A1

公开(公告)日：2023-08-31

申请号：US18175524

申请日：2023-02-27

Applicant: MAXLINEAR, INC.

Inventor： Zohaib Mahmood ,  Hajir Roozbehani ,  Alexandre Megretski ,  Yan Li

IPC: H04W52/14 ,  H04W52/36 ,  H04W52/24 ,  H04L5/00

CPC classification number: H04W52/143 ,  H04W52/367 ,  H04W52/243 ,  H04L5/0051

Abstract: According to an aspect of an embodiment, a base station configured for beamforming estimation in a massive multiple input multiple output (mMIMO) radio access network (RAN) (mMIMO-RAN) may comprise a processing device and a transceiver. The processing device may be configured to obtain a channel estimate for a user equipment (UE). The processing device may be configured to compute a first power level adjustment for a downlink (DL) signal and a second power level adjustment for the DL signal. The second power level adjustment may be based on a power constraint. The transceiver may be configured to transmit the DL signal to the UE.

公开(公告)号：US20240322868A1

公开(公告)日：2024-09-26

申请号：US18589408

申请日：2024-02-27

Applicant: MAXLINEAR, INC.

Inventor： Zohaib Mahmood ,  Hajir Roozbehani ,  Alexandre Megretski ,  Yan Li

IPC: H04B7/0452 ,  H04B1/04 ,  H04B7/0456

CPC classification number: H04B7/0452 ,  H04B1/0475 ,  H04B7/0465

Abstract: According to an aspect of an embodiment, a base station configured for beamforming estimation in a massive multiple input multiple output (mMIMO) radio access network (RAN) (mMIMO-RAN) may comprise a processing device and a transceiver. The processing device may be configured to compute, at the base station, a precoder based on jointly maximizing the signal with respect to noise and minimizing an interference with respect to the noise using an approximate decoder. The processing device may be configured to compute, at the base station, the precoder based on a power constraint. The processing device may be configured to generate, at the base station, the precoder for precoding a downlink signal for transmission from the base station to a user equipment (UE). The transceiver may be configured to transmit the DL signal to the UE.

公开(公告)号：US20240291526A1

公开(公告)日：2024-08-29

申请号：US18589407

申请日：2024-02-27

Applicant: MAXLINEAR, INC.

Inventor： Zohaib Mahmood ,  Hajir Roozbehani ,  Alexandre Megretski

IPC: H04B7/0426 ,  H04B7/0452 ,  H04L5/00 ,  H04L25/02

CPC classification number: H04B7/043 ,  H04B7/0452 ,  H04L5/0048 ,  H04L25/0202

Abstract: According to an example, a massive multiple-input multiple-output (mMIMO) system operable for beamforming actuation may comprise an open radio access network radio unit (O-RU) having a processing device operable to: compute one or more of a predictive channel estimate, a beamforming estimate, or an antenna calibration; compute, based on an objective function having one or more of the predictive channel estimate, the beamforming estimate, or the antenna calibration as inputs, a power level for a data stream associated with a transmitting antenna path, wherein the power level for the data stream is selected to facilitate an equal-power distribution across a plurality of transmitting antenna paths; and set the power level for the data stream associated with the transmitting antenna path.

公开(公告)号：US20230318648A1

公开(公告)日：2023-10-05

申请号：US18295263

申请日：2023-04-03

Applicant: MAXLINEAR, INC.

Inventor： Zohaib Mahmood ,  Subramanian Anantharaman Chandrasekarapuram ,  Srivathsa Acharya ,  Gopala Krishna Murthy Vemula ,  Devika Sunilkumar

IPC: H04B1/12 ,  H04L25/03 ,  H04B1/04

CPC classification number: H04B1/123 ,  H04L25/03 ,  H04B1/0475

Abstract: A system includes a receiver (RX) configured to receive an RX output signal in an RX band, where the RX output signal has a first passive intermodulation (PIM) source in the RX band and a second PIM source in the RX band; and a processing device configured to: receive the RX output signal from the receiver on an RX path, receive a crest factor reduction (CFR) output signal from a CFR on a transmit (TX) path, identify the first PIM source and the second PIM source based on the RX output signal and the CFR output signal, calibrate the CFR output signal based on the first and second PIM sources in the RX output signal to generate a non-linear actuation (NA) input signal, and generate an intermodulation distortion signal by using an NA function on the NA input signal.