公开(公告)号：US11201773B1

公开(公告)日：2021-12-14

申请号：US16887471

申请日：2020-05-29

Applicant: QUALCOMM Incorporated

Inventor： Noam Zach ,  Guy Wolf ,  Ory Eger ,  Sharon Levy ,  Assaf Touboul

IPC: H04L27/26 ,  H04L1/00 ,  H04W72/08 ,  H04W72/04

Abstract: A transmitting device may reduce a peak to average power ratio (PAPR) ratio by clipping samples that have an amplitude exceeding a threshold. For a downlink transmission, the transmitting device may transmit an incremental peak suppression information message (PSIM) to multiple user equipments (UEs). A UE may receive downlink control information (DCI) indicating a data and a modulation and coding scheme (MCS) for the UE, and at least a first incremental PSIM. The UE may decode at least the first incremental PSIM that is applicable to a MCS lower than or equal to the MCS for the UE. The UE may determine whether to decode one or more subsequent incremental PSIMs based on the MCS for the UE. The UE may apply peak information from the incremental PSIMs to the data channel. The UE may decode the data channel based on the MCS for the UE.

公开(公告)号：US20210376890A1

公开(公告)日：2021-12-02

申请号：US16888566

申请日：2020-05-29

Applicant: QUALCOMM Incorporated

Inventor： Sharon Levy ,  Guy Wolf ,  Igor Gutman ,  Assaf Touboul ,  Ory Eger ,  Noam Zach

IPC: H04B7/0456 ,  H04L5/00

Abstract: Techniques for wireless communications are described. A communication device may support processing digital post distortion using additional references symbols. For example, the communication device may precode a signal including at least two reference symbols for a single-layer transmission using at least two antenna ports. At least one reference symbol of the at least two reference symbols is associated with at least one data symbol of a data stream. The communication device may estimate, based on the at least two reference symbols, a nonlinearity model of at least two power amplifiers associated with the single-layer transmission, and determine an estimate of a nonlinearity factor of the precoded signal based on the estimated nonlinearity model. As a result, the communication device may eliminate or reduce the nonlinear factor of the precoded signal based on the estimated nonlinearity model of the at least two power amplifiers and the estimated channel impulse response.

公开(公告)号：US20210345399A1

公开(公告)日：2021-11-04

申请号：US16862543

申请日：2020-04-29

Applicant: QUALCOMM INCORPORATED

Inventor： Sharon Levy ,  Guy Wolf ,  Assaf Touboul ,  Igor Gutman

IPC: H04W74/04 ,  H04W24/10 ,  H04B17/345 ,  H04B7/06

Abstract: Methods related to wireless communication systems and selecting groups of user equipment (UE) devices to multiplex for multi-user multiple input and multiple output (MU-MIMO) communications are presented. A base station transmits a channel state report configuration indicating a set of one or more interference measurement resources and precoding information associated with the set of one or more interference measurement resources to a first UE of a plurality of UEs. The BS receives, from the first UE, a channel state report including interference prediction information based on the set of one or more interference measurement resources and the precoding information. The BS uses the channel state report to determine a group configuration for the plurality of UEs. Other features are also claimed and described.