公开(公告)号：US20210036733A1

公开(公告)日：2021-02-04

申请号：US16530504

申请日：2019-08-02

Applicant: QUALCOMM Incorporated

Inventor： Shay Landis ,  Igor Gutman ,  Gideon Shlomo Kutz ,  Ran Berliner

IPC: H04B1/7107 ,  H04W72/04 ,  H04L5/00

Abstract: Systems and methods to detect spurious responses (spurs) in association with mmWave wireless communications are described. Such spurs may originate internal to the receiver (internal spurs) or external to the receiver (external spurs) originated in the transmitter. Embodiments operate to identify received mmWave wireless communication signal spurs in symbols, or portions thereof, which do not have transmissions directed to the receiving device. mmWave spur detection implementations of embodiments can detect spurs in real-time operation of the receiving device. Such real-time spur detection facilitates operation by the receiving device to perform spur removal in real-time operation of the receiving device, thus enabling removal of both internal spurs and external spurs as well as dynamically adapting to different scenarios that cause different spurs. Other aspects and features are also claimed and described.

公开(公告)号：US10707907B2

公开(公告)日：2020-07-07

申请号：US16222884

申请日：2018-12-17

Applicant: QUALCOMM Incorporated

Inventor： Ariel Yaakov Sagi ,  Igor Gutman

IPC: H04B1/04 ,  H04B1/10 ,  H04L7/00 ,  H03F3/24 ,  H04L25/03 ,  H03F1/32 ,  H04L25/02

Abstract: A transmitter may be configured to generate a reference signal having a non-constant envelope for nonlinearity estimation by a receiver. The transmitter may transmit the reference signal. A receiver may be configured to receive, from the transmitter, the reference signal having the non-constant envelope. The receiver may estimate at least one nonlinearity characteristic based on the reference signal having the non-constant envelope. The receiver may transmit feedback based on the at least one nonlinearity characteristic and/or perform at least one digital post distortion (DPoD) operation based on the at least one nonlinearity characteristic.

公开(公告)号：US10541657B2

公开(公告)日：2020-01-21

申请号：US15688766

申请日：2017-08-28

Applicant: QUALCOMM Incorporated

Inventor： Igor Gutman ,  Ariel Sagi ,  Alecsander Eitan

IPC: H04L27/36 ,  H03F1/32 ,  H03M1/00 ,  H04B1/00

Abstract: Certain aspects of the present disclosure are directed to a digital predistortion (DPD) device for use within a wireless transmitter that permits the use of a downstream digital-to-analog converter that operates at a clock rate close to the bandwidth of a digital baseband input signal. In some examples, a sampling rate of a digital baseband input signal is increased using an upsampler to obtain an increased rate digital input signal. Predistortion is applied to the increased rate digital input signal using a DPD device to obtain a predistorted digital signal. The sampling rate of the predistorted digital signal is then decreased using a downsampler to obtain a lower-rate predistorted digital signal with a sampling rate below the increased rate of the upsampler (e.g. close to the bandwidth of a digital baseband input signal). A low pass filter may be provided to filter out-of-band signal components from the predistorted digital signal.

公开(公告)号：US10056941B2

公开(公告)日：2018-08-21

申请号：US15187580

申请日：2016-06-20

Applicant: QUALCOMM Incorporated

Inventor： Haim Mendel Weissman ,  Igor Gutman

IPC: H04J1/12 ,  H04B3/32 ,  H04B3/487 ,  H04L12/26 ,  H04L27/36

CPC classification number: H04B3/32 ,  H04B3/487 ,  H04L27/368 ,  H04L43/16

Abstract: Systems and methods for providing wireless communication impairment correction using non-linear iterative precoding by a transmitter device are disclosed. The transmitter may exploit the non-linear transmit indications, and perform digital non-linear multiple input multiple output (MIMO) precoding of a transmit signal to improve the error vector magnitude (EVM) at the intended receiver device and/or reduce the adjacent channel leakage ratio (ACLR) at the unintended receiver devices. The non-linear transmit indications may comprise amplitude modulation to amplitude modulation (AM-AM) and amplitude modulation to phase modulation (AM-PM) indications. In operation, the non-linear transmit indications may be received from the intended receiver devices or may be measured by the transmitter device.

公开(公告)号：US12267093B2

公开(公告)日：2025-04-01

申请号：US18333411

申请日：2023-06-12

Applicant: QUALCOMM Incorporated

Inventor： Igor Gutman ,  Ajay Devadatta Kanetkar ,  Zhaole Xiao ,  Juergen Cezanne ,  Tao Luo

IPC: H04B1/10 ,  H04B1/04

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit a first message indicating a capability to linearize a digital signal outputted by an analog front end of the UE, the digital signal being associated with a first transmission. The UE may receive the first transmission, the first transmission being associated with a gain state comprising a set of configurations associated with a plurality of amplifiers at the UE, and the UE may linearize the digital signal associated with the first transmission based at least in part on the gain state, where linearizing the digital signal comprises obtaining an output voltage value corresponding to an input voltage value associated with the analog front end. In some examples, the UE may obtain an output voltage value from a lookup table (LUT) of a set of LUTs configured to the UE or generated by the UE.

公开(公告)号：US12212441B2

公开(公告)日：2025-01-28

申请号：US18158944

申请日：2023-01-24

Applicant: QUALCOMM Incorporated

Inventor： Igor Gutman ,  Tao Luo ,  Ariel Yaakov Sagi ,  Konstantinos Dimou ,  Junyi Li ,  Jianghong Luo

IPC: H04L23/02 ,  H04L5/00 ,  H04L25/03

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may apply a crest factor reduction (CFR) to an input signal to generate an output signal, the applying the CFR to the input signal including applying a shaping filter that distributes a first portion of CFR noise within a transmission frequency band of the output signal and a second portion of the CFR noise in at least one air interface resource that is outside of the transmission frequency band of the output signal. The network node may transmit the output signal. Numerous other aspects are described.

公开(公告)号：US20240155507A1

公开(公告)日：2024-05-09

申请号：US18053242

申请日：2022-11-07

Applicant: QUALCOMM Incorporated

Inventor： Igor Gutman ,  Peter Gaal ,  Tao Luo ,  Junyi Li ,  Juergen Cezanne ,  Gokul Sridharan

IPC: H04W52/36 ,  H04W52/32

CPC classification number: H04W52/365 ,  H04W52/325

Abstract: This disclosure provides systems, methods, and devices for wireless communication that support power headroom differential reporting for reference resource signals transmitted at different transmission power than other uplink transmissions. In a first aspect, a method of wireless communication includes determining a power headroom value, by a user equipment (UE), using a maximum configured transmission power and a transmission power configured for an uplink transmission at a configured modulation and coding scheme (MCS). The UE determines a reference resource signal power headroom value using the maximum configured transmission power and a reference resource signal transmission power configured for a reference resource signal transmission, calculates a reference resource power headroom differential between the power headroom value and the reference resource signal power headroom value, and transmits a report including the uplink transmission power headroom value and the reference resource power headroom differential. Other aspects and features are also claimed and described.

公开(公告)号：US20240098497A1

公开(公告)日：2024-03-21

申请号：US17945315

申请日：2022-09-15

Applicant: QUALCOMM Incorporated

Inventor： Igor Gutman ,  Yavuz Yapici ,  Tao Luo

IPC: H04W12/122 ,  H04W12/40

CPC classification number: H04W12/122 ,  H04W12/40

Abstract: Methods, systems, and devices for wireless communications are described for physical layer signature feedback to enhance security in wireless communications. A user equipment (UE) and a network entity may apply a physical layer signature, such as an artificial physical layer impairment, to one or more physical layer signals that may be measured to identify a physical layer signature of the associated physical layer signal. The UE, upon receipt of a physical layer signal, may check if the identified signal includes a physical layer signature of a set of valid physical layer signatures. If the received physical layer signature matches a valid physical layer signature, the UE may operate in accordance with procedures associated with the signal. If the received physical layer signature does not match a valid physical layer signature, the UE may transmit a message to the network entity that indicates an unmatched physical layer signature.

公开(公告)号：US11856528B2

公开(公告)日：2023-12-26

申请号：US17572102

申请日：2022-01-10

Applicant: QUALCOMM Incorporated

Inventor： Igor Gutman ,  Robert Zokaim ,  Oren Matsrafi ,  Yehezkel Hadid ,  Ghaith Shabsigh ,  Rahul Malik ,  Carl Hardin ,  Damin Cao ,  Michael Lee McCloud

IPC: H04W52/36 ,  H04B1/04 ,  H04B1/62 ,  H04W72/044

CPC classification number: H04W52/36 ,  H04B1/0475 ,  H04B1/62 ,  H04W72/0473 ,  H04B2001/0425

Abstract: Methods, systems, and devices for wireless communications are described. Some wireless communications systems may support adaptation of digital pre-distortion (DPD) coefficients based on a temperature of a user equipment (UE). The UE may determine a power offset value based on a first temperature value associated with a training procedure for the UE, a second temperature value associated with the UE, and a constant value. The training procedure may be associated with multiple sets of coefficients for the UE. The UE may apply the power offset value to a transmission power level for transmission of a message. The UE may determine a set of coefficients of the multiple sets of coefficients based on the training procedure and the power offset value applied to the transmission power level. The UE may apply the coefficients to a DPD engine of the UE to generate the message for transmission at the transmission power level.

公开(公告)号：US20230345372A1

公开(公告)日：2023-10-26

申请号：US17727477

申请日：2022-04-22

Applicant: QUALCOMM Incorporated

Inventor： Yavuz Yapici ,  Igor Gutman ,  Tao Luo ,  Junyi Li

IPC: H04W52/02 ,  H04L5/00

CPC classification number: H04W52/0232 ,  H04W52/0274 ,  H04L5/0051

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) and network entity may determine a physical layer (PHY) signature for the network entity to include in one or more wake-up signals (WUSs) transmitted to the UE. The UE may use the determined PHY signature to validate a WUS received during a monitoring occasion. For example, the UE may compare a PHY signature of the received WUS to the determined PHY signature. If the PHY signature of the received WUS matches the determined PHY signature, the UE may wake up in accordance with the WUS. If the PHY signature of the received WUS does not match the determined PHY signature, the UE may remain in a sleep mode. The UE may transmit an indication of an adversarial attack based on the received WUS not including the determined PHY signature or including a different PHY signature.