公开(公告)号：US20240426976A1

公开(公告)日：2024-12-26

申请号：US18338213

申请日：2023-06-20

Applicant: Qualcomm Incorporated

Inventor： Roberto Rimini ,  Anant Gupta ,  Adrian Bortier Alabi ,  Ravi Teja Yarra

IPC: G01S7/35 ,  G01S7/00

Abstract: An apparatus for is disclosed for precoding radar receive signals. The apparatus includes a wireless transceiver configured to transmit a radar transmit signal using at least one antenna. The radar transmit signal is modulated in frequency across multiple cycles based on one or more frequency-modulation schemes. The wireless transceiver is also configured to receive at least two radar receive signals using at least two other antennas. The at least two radar receive signals include versions of the radar transmit signal that are reflected by at least one object. Each of the at least two radar receive signals is modulated in frequency across the multiple cycles based on the one or more frequency-modulation schemes of the radar transmit signal. The wireless transceiver is further configured to precode the at least two radar receive signals across the multiple cycles to generate precoded radar receive signals that are orthogonal to each other.

公开(公告)号：US12158541B2

公开(公告)日：2024-12-03

申请号：US17000228

申请日：2020-08-21

Applicant: QUALCOMM Incorporated

Inventor： Roberto Rimini ,  Tsai-Chen Huang ,  Nitin Jonathan Myers

IPC: G06F16/58 ,  A61B5/00 ,  A61B5/0205 ,  A61B5/0507 ,  G01S7/00 ,  G01S7/35 ,  G01S7/41 ,  G01S13/34 ,  H04W52/30 ,  A61B5/024 ,  A61B5/08 ,  G06F16/583

Abstract: Aspects of the disclosure relate to radar-based signaling for detecting, measuring, and/or characterizing a target object. An electronic device may transmit a plurality of detection signals and receive a plurality of reflection signals reflected from the target object. The electronic device then processes the plurality of reflection signals to extract one or more parameters of the target object. Based on the reflection signals, the device can measure and/or characterize the target object, e.g., to obtain a heart rate and/or breathing rate. In other examples, the device may determine whether the reflection signals indicate human vital signs, such as a heart rate or breathing. The electronic device may then adjust at least one transmission parameter based on whether human vital signs are detected at the target object, and transmit the adjusted signal using the transmission parameter. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US20240073068A1

公开(公告)日：2024-02-29

申请号：US18348628

申请日：2023-07-07

Applicant: QUALCOMM Incorporated

Inventor： Sheng-Yuan Tu ,  Roberto Rimini ,  Anant Gupta ,  Ahmad Bassil Zoubi ,  Neevan Ramalingam

IPC: H04L27/01 ,  H04L25/03

CPC classification number: H04L27/01 ,  H04L25/03343 ,  H04L2025/03426

Abstract: An apparatus is disclosed that implements interference and/or clutter cancellation using cross-channel equalization. In example aspects, the apparatus includes a wireless transceiver configured to be connected to multiple feed ports. The wireless transceiver is also configured to transmit an electromagnetic signal using a first feed port of the multiple feed ports. A modulated spur is generated based on the transmission of the electromagnetic signal. The wireless transceiver is additionally configured to receive two versions of a receive signal respectively via two feed ports of the multiple feed ports. The receive signal comprises the modulated spur and a mutual-coupling component associated with the transmission of the electromagnetic signal. The wireless transceiver is further configured to generate a filtered signal by attenuating the mutual-coupling component and the modulated spur within one of the two versions of the receive signal using cross-channel equalization.

公开(公告)号：US11428780B2

公开(公告)日：2022-08-30

申请号：US16593453

申请日：2019-10-04

Applicant: QUALCOMM Incorporated

Inventor： Nan Zhang ,  Roberto Rimini ,  Jong Hyeon Park ,  Alexei Yurievitch Gorokhov

IPC: G01S7/40 ,  G01S7/292 ,  G01S13/34 ,  G01S13/88

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment receives a sliding window of measurements associated with a radar signal transmitted by the UE; determines that a user is within a threshold distance of the UE, wherein the threshold distance is determined to be a first distance when an energy measurement, associated with the radar signal, indicates an energy reduction satisfying a threshold energy reduction, or wherein the threshold distance is determined to be a second distance when the sliding window of measurements indicates an amount of energy variation satisfying a threshold amount of energy variation associated with the radar signal; and performs, based at least in part on determining that the user is within the threshold distance, an action associated with a communication signal of the UE. Numerous other aspects are provided.

公开(公告)号：US20190044561A1

公开(公告)日：2019-02-07

申请号：US15939222

申请日：2018-03-28

Applicant: Qualcomm Incorporated

Inventor： Udara Fernando ,  Roberto Rimini ,  Mustafa Emin Sahin ,  Seunghwan Kim ,  Nikhil Anand Muthya

IPC: H04B1/3827 ,  H04B17/12 ,  H04W52/24 ,  H04W52/28

Abstract: An apparatus is disclosed for proximity detection based on an electromagnetic field perturbation. In an example aspect, the apparatus includes an antenna array including at least two feed ports and a wireless transceiver coupled to the antenna array. The wireless transceiver is configured to generate an electromagnetic field via the antenna array. The wireless transceiver is also configured to receive energy from the electromagnetic field via the at least two feed ports. The wireless transceiver is additionally configured to adjust a transmission parameter based on the energy received via the at least two feed ports. The transmission parameter varies based on a range to an object that is present within the electromagnetic field.

公开(公告)号：US09438284B2

公开(公告)日：2016-09-06

申请号：US14070919

申请日：2013-11-04

Applicant: QUALCOMM Incorporated

Inventor： Jibing Wang ,  Roberto Rimini ,  Joseph Patrick Burke

IPC: H04B1/10 ,  H04B1/12 ,  H04L25/03

CPC classification number: H04B1/1027 ,  H04B1/126 ,  H04L25/03305

Abstract: Various embodiments are disclosed for implementing joint non-linear interference cancellation (NLIC) in communication receivers with multiple receiver antennas to cancel or mitigate self-jamming interference from the same aggressor transmitter. A victim receiver may exploit the correlated nature of the interference signals received by the multiple receiver antennas to reduce the computational complexity of an NLIC scheme and improve performance. The victim receiver may select an Rx antenna/Rx chain that experiences the strongest interference from the aggressor transmitter and may perform a full NLIC operation using Tx data from the aggressor transmitter to estimate the strongest interference signal. The NLIC operation may estimate each remaining interference signal by applying a complex coefficient from a single-tap adaptive filter to the estimate of the strongest interference signal. The victim receiver may remove the estimated interference signals from the Rx signals of the respective Rx chains to cancel or mitigate the interference.

Abstract translation: 公开了用于在具有多个接收机天线的通信接收机中实现联合非线性干扰消除（NLIC）的各种实施例，以消除或减轻来自同一侵略者发射机的自身干扰。 受害者接收机可以利用由多个接收机天线接收的干扰信号的相关性质来降低NLIC方案的计算复杂性并提高性能。 受害者接收机可以选择经历来自攻击者发射机的最强干扰的Rx天线/ Rx链，并且可以使用来自攻击者发射机的Tx数据来执行完整的NLIC操作，以估计最强的干扰信号。 NLIC操作可以通过将来自单抽头自适应滤波器的复系数应用于最强干扰信号的估计来估计每个剩余的干扰信号。 受害者接收机可以从相应Rx链的Rx信号中去除估计的干扰信号，以消除或减轻干扰。

公开(公告)号：US20160072591A1

公开(公告)日：2016-03-10

申请号：US14849544

申请日：2015-09-09

Applicant: QUALCOMM Incorporated

Inventor： Sheng-Yuan TU ,  Farrokh Abrishamkar ,  Brian Clarke Banister ,  Roberto Rimini ,  Nicholas Michael Carbone ,  Insung Kang

IPC: H04B15/00

CPC classification number: H04B1/0475 ,  H04B1/525 ,  H04W88/06

Abstract: The various embodiments include methods and apparatuses for canceling nonlinear interference during concurrent communication of multi-technology wireless communication devices. Nonlinear interference may be estimated using a block least squares function interference filter by generating aggressor kernel matrices from the aggressor signals, augmenting the aggressor kernel matrices by weight factors and executing a linear combination of the augmented output, at an intermediate layer to produce intermediate layer outputs. At an output layer, a linear filter function may be executed on the intermediate layer outputs to produce an estimated nonlinear interference used to cancel the nonlinear interference of a victim signal.

Abstract translation: 各种实施例包括用于在多技术无线通信设备的并发通信期间消除非线性干扰的方法和装置。 可以使用块最小二乘函数干扰滤波器通过从侵扰者信号产生侵略者核心矩阵来估计非线性干扰，通过权重因子增加侵略者核心矩阵并在中间层执行增强输出的线性组合以产生中间层输出 。 在输出层，可以对中间层输出执行线性滤波函数，以产生用于消除受害信号的非线性干扰的估计的非线性干扰。

公开(公告)号：US09166635B2

公开(公告)日：2015-10-20

申请号：US14218371

申请日：2014-03-18

Applicant: QUALCOMM Incorporated

Inventor： Nicholas Michael Carbone ,  Roberto Rimini

IPC: H04B15/00 ,  H04L25/49 ,  H03D1/04 ,  H04B1/04 ,  H03F1/32 ,  H04B1/525

CPC classification number: H04B1/0475 ,  H03C2200/0016 ,  H03D1/04 ,  H03F1/3241 ,  H03F1/3247 ,  H04B1/525 ,  H04B2001/0425

Abstract: Self-jamming interference associated with a transmitted signal of an aggressor transmitter may affect a received signal of a victim receiver in a communication device. A victim receiver may obtain a non-linear interference cancelation (NLIC) signal from an aggressor transmitter of a communication device. The NLIC signal may be based, at least in part, on a source transmit signal that has been distorted by digital pre-distortion (DPD) at the transmitter. An NLIC unit may reconstruct a cancelation signal based on the NLIC signal. A receiver may remove the cancelation signal from a received signal.

Abstract translation: 与攻击者发射机的发射信号相关联的自干扰干扰可能影响通信设备中的受害者接收机的接收信号。 受害者接收机可以从通信设备的攻击者发射机获得非线性干扰消除（NLIC）信号。 至少部分地，NLIC信号可以基于在发射机处被数字预失真（DPD）失真的源发射信号。 NLIC单元可以基于NLIC信号重建取消信号。 接收机可以从接收到的信号中去除消除信号。

公开(公告)号：US09160386B2

公开(公告)日：2015-10-13

申请号：US13857941

申请日：2013-04-05

Applicant: QUALCOMM Incorporated

Inventor： Roberto Rimini ,  Jibing Wang ,  Geert Arnout Awater

IPC: H03D1/04 ,  H04B1/12

CPC classification number: H04B1/12

Abstract: Systems and methods are disclosed to implement non-linear interference cancellation (NLIC) across chips or dies in communication systems to cancel or mitigate self-jamming interference. A victim transceiver may receive an analog baseband transmit (Tx) signal from an aggressor transceiver. The analog baseband Tx signal may be tapped from a digital analog converter (DAC) of the aggressor transceiver. Alternatively, the analog baseband Tx signal may be generated by the aggressor transceiver using an auxiliary down-conversion and filtering stage. The victim transceiver may receive a composite baseband Rx signal from the victim transceiver front-end. The composite baseband Rx signal includes the desired Rx signal and an interference signal. The victim transceiver may sample the analog baseband Tx signal to generate a digital signal replica of the analog baseband Tx signal for the NLIC operation to cancel or mitigate the interference signal present in the composite baseband Rx signal.

Abstract translation: 公开了系统和方法以在通信系统中跨芯片或芯片实现非线性干扰消除（NLIC），以消除或减轻自干扰干扰。 受害者收发器可以从侵扰者收发器接收模拟基带发射（Tx）信号。 可以从侵略者收发器的数字模拟转换器（DAC）中抽取模拟基带Tx信号。 或者，模拟基带Tx信号可以由侵略者收发器使用辅助下变频和滤波级产生。 受害者收发器可以从受害收发器前端接收复合基带Rx信号。 复合基带Rx信号包括期望的Rx信号和干扰信号。 受害收发器可以采样模拟基带Tx信号以产生用于NLIC操作的模拟基带Tx信号的数字信号副本，以消除或减轻存在于复合基带Rx信号中的干扰信号。

公开(公告)号：US20150126146A1

公开(公告)日：2015-05-07

申请号：US14070919

申请日：2013-11-04

Applicant: QUALCOMM Incorporated

Inventor： Jibing Wang ,  Roberto Rimini ,  Joseph Patrick Burke

IPC: H04B1/10 ,  H04B1/12

CPC classification number: H04B1/1027 ,  H04B1/126 ,  H04L25/03305

Abstract: Various embodiments are disclosed for implementing joint non-linear interference cancellation (NLIC) in communication receivers with multiple receiver antennas to cancel or mitigate self-jamming interference from the same aggressor transmitter. A victim receiver may exploit the correlated nature of the interference signals received by the multiple receiver antennas to reduce the computational complexity of an NLIC scheme and improve performance. The victim receiver may select an Rx antenna/Rx chain that experiences the strongest interference from the aggressor transmitter and may perform a full NLIC operation using Tx data from the aggressor transmitter to estimate the strongest interference signal. The NLIC operation may estimate each remaining interference signal by applying a complex coefficient from a single-tap adaptive filter to the estimate of the strongest interference signal. The victim receiver may remove the estimated interference signals from the Rx signals of the respective Rx chains to cancel or mitigate the interference.

Abstract translation: 公开了用于在具有多个接收机天线的通信接收机中实现联合非线性干扰消除（NLIC）的各种实施例，以消除或减轻来自同一侵略者发射机的自身干扰。 受害者接收机可以利用由多个接收机天线接收的干扰信号的相关性质来降低NLIC方案的计算复杂性并提高性能。 受害者接收机可以选择经历来自攻击者发射机的最强干扰的Rx天线/ Rx链，并且可以使用来自攻击者发射机的Tx数据来执行完整的NLIC操作，以估计最强的干扰信号。 NLIC操作可以通过将来自单抽头自适应滤波器的复系数应用于最强干扰信号的估计来估计每个剩余的干扰信号。 受害者接收机可以从相应Rx链的Rx信号中去除估计的干扰信号，以消除或减轻干扰。