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公开(公告)号：US11275648B2
公开(公告)日：2022-03-15
申请号：US16808275
申请日：2020-03-03
Applicant: QUALCOMM Incorporated
Inventor： Joel Linsky , Le Nguyen Luong
Abstract: A wireless device is provided that determines a set of expected packets from a second wireless device, each expected packet of the set of expected packets comprising an expected cyclic redundancy check (CRC) of a set of expected CRCs, receives a packet from the second wireless device, the received packet comprising a header and a first CRC, determines whether a second CRC generated based on the header in the received packet matches the first CRC received in the received packet, determines, when the generated second CRC does not match the first CRC received in the received packet, a third CRC of the set of expected CRCs based on the first CRC, and replaces the received header with a header corresponding to the determined third CRC.
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公开(公告)号：US20170288932A1
公开(公告)日：2017-10-05
申请号：US15266906
申请日：2016-09-15
Applicant: QUALCOMM Incorporated
Inventor： Eunmo Kang , Koorosh Akhavan , Le Nguyen Luong
CPC classification number: H04L1/0018 , H04L27/0014 , H04L27/2082 , H04L27/2657 , H04L27/2671 , H04L27/2675 , H04L27/2698 , H04L2027/003 , H04L2027/0057 , H04L2027/0067 , H04W4/70 , Y02D70/1262 , Y02D70/142 , Y02D70/164
Abstract: Systems and methods are directed to low cost and low power carrier frequency offset (CFO) estimation in a receiver. In-phase (I) and quadrature (Q) samples of a wireless signal are received by the receiver and a first phase and a second phase are extracted from the outputs of a first autocorrelator with a first time-lag and a second autocorrelator with a second time-lag. The extracted first and second phases are combined to generate an estimated CFO of high accuracy and wide estimation range.
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公开(公告)号：US09094079B2
公开(公告)日：2015-07-28
申请号：US13647332
申请日：2012-10-08
Applicant: QUALCOMM Incorporated
Inventor： Daniel Jose Fernandes Barros , Le Nguyen Luong , James Young Hurt , Yann Ly-Gagnon , Paul James Husted
CPC classification number: H04B1/1036 , G01S19/235 , H03D3/009 , H03J7/04 , H04B1/1027 , H04L27/2647 , H04L27/3809 , H04L27/3863 , H04L2027/003
Abstract: Systems and methods are disclosed for compensating I-Q imbalance in a wireless receiver. The receiver may employ a quadrature downconverter configured to receive an RF signal input and output an in-phase component and a quadrature component at an IF, an IF rotation block configured to downconvert the in-phase and quadrature components to baseband and an I-Q correction block configured to compensate for an I-Q imbalance in the received signal, wherein the I-Q correction block is positioned downstream from the IF rotation block in the signal path. Performing the I-Q correction after conversion to baseband may allow the compensation calculations to operate at a reduced digital rate. Similarly, digitally adjusting the gain of the signal prior to I-Q compensation may reduce the number of bits that are manipulated during the compensation process. These features may represent significant efficiencies as compared to I-Q corrections performed at IF.
Abstract translation: 公开了用于补偿无线接收机中的I-Q不平衡的系统和方法。 接收机可以采用正交下变频器，其被配置为接收RF信号输入并输出IF的同相分量和正交分量，IF旋转块被配置为将同相和正交分量下变频到基带和IQ校正块 被配置为补偿接收信号中的IQ不平衡，其中IQ校正块位于信号路径中的IF旋转块的下游。 在转换为基带后执行I-Q校正可能允许补偿计算以降低的数字速率运行。 类似地，在I-Q补偿之前数字调整信号的增益可以减少在补偿处理期间被操纵的位数。 与IF执行的I-Q校正相比，这些特征可能表现出显着的效率。
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公开(公告)号：US20150137883A1
公开(公告)日：2015-05-21
申请号：US14083900
申请日：2013-11-19
Applicant: QUALCOMM Incorporated
Inventor： Eunmo Kang , Le Nguyen Luong , Yossef Tsfaty
IPC: H03D3/00
CPC classification number: H03D3/006 , H03D3/00 , H03D3/001 , H03D2200/0045 , H03D2200/0054 , H04B1/1646 , H04L27/14 , H04L27/148 , H04L27/152
Abstract: Methods, systems, and devices are described for an adaptive demodulator that supports multiple modes. An FM signal may be received at a demodulator and parameters corresponding to the FM signal may be identified. Connections between multiple modules within the demodulator may be configured, based at least in part on the parameters, to select one of multiple demodulation modes supported by the demodulator to demodulate the FM signal. The modes may include a phase differencing mode, a phase-locked loop (PLL) mode, a frequency-compressive feedback (FCF) mode, and/or a quadrature detector mode. The parameters may include one or both of a signal strength of the FM signal and a maximum frequency deviation of the FM signal. Based on the parameters, one or more signals may be generated to configure the connections within the demodulator. A switch from one mode to another may occur when one of the parameters breaches a threshold value.
Abstract translation: 为支持多种模式的自适应解调器描述了方法，系统和设备。 可以在解调器处接收FM信号，并且可以识别与FM信号对应的参数。 至少部分地基于参数，解调器内的多个模块之间的连接可以被配置为选择由解调器支持的多个解调模式之一以解调FM信号。 这些模式可以包括相位差分模式，锁相环（PLL）模式，频率 - 压缩反馈（FCF）模式和/或正交检测器模式。 参数可以包括FM信号的信号强度和FM信号的最大频率偏差中的一个或两个。 基于这些参数，可以生成一个或多个信号来配置解调器内的连接。 当其中一个参数违反阈值时，可能会发生从一种模式切换到另一种模式的切换。
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公开(公告)号：US12202500B2
公开(公告)日：2025-01-21
申请号：US17491506
申请日：2021-09-30
Applicant: QUALCOMM Incorporated
Inventor： Santosh Kumar Gupta , Shishir Gupta , Constantinos Steven Bekis , Liang Zhao , Le Nguyen Luong , Cheng-Han Wang
IPC: H04M11/00 , B60W50/12 , H04M1/72463 , H04W4/48 , H04W64/00
Abstract: The relative position of a user equipment (UE) within a vehicle is determined using angular measurements, such as angle of arrival (AOA), and optionally ranging measurements, with respect to a number of wireless transceivers within the vehicle using wideband signals. The relative position of the UE with respect to a personal zone or the steering wheel may be determined based on known positions of the wireless transceivers. If the UE is determined to be within the personal zone, at least one functionality of the UE is restricted to avoid driver distraction and, optionally, the operation autonomous driving of the vehicle adjusted. If the UE is worn on the driver's wrist the relative position of the UE with respect to the steering wheel may be similarly determined and operation of the vehicle modified if the UE is determined to be outside a threshold distance from the steering wheel.
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Patent Agency Ranking
公开(公告)号：US12101734B2
公开(公告)日：2024-09-24
申请号：US17699918
申请日：2022-03-21
Applicant: QUALCOMM Incorporated
Inventor： Le Nguyen Luong , Liang Zhao , Cheng-Han Wang , Santosh Kumar Gupta , Shishir Gupta , Michael Kohlmann , Xiaoxin Zhang
CPC classification number: H04W64/00
Abstract: Differing operations of a wireless communication device benefit from different antenna configurations, such as for positioning, where closely spaced antennas are desirable, and data communication, where antenna diversity is desirable. A device is configured to receive a request for receive a request for determining a position of a user equipment (UE), select one of a first plurality of antennas or a second plurality of antennas for determining the position of the UE, receive wireless signals using the selected first plurality of antennas or the second plurality of antennas, and determine the position of the UE based at least in part on the received wireless signals.
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公开(公告)号：US09807712B2
公开(公告)日：2017-10-31
申请号：US14944578
申请日：2015-11-18
Applicant: QUALCOMM Incorporated
Inventor： Yann Ly-Gagnon , Le Nguyen Luong
CPC classification number: H04W52/52 , H03G3/3036 , H03G3/3052 , H03G3/3068 , H03G3/3078 , H03G3/3084 , H04B1/16 , H04B17/20
Abstract: A method for dynamic sizing of a blocker margin by a receiver automatic gain control (AGC) is described. The method includes measuring a wanted signal level and a blocker signal level. The method also includes adjusting a linear target for the wanted signal level at the output of an analog-to-digital converter (ADC) of the receiver based on the blocker signal level. The linear target is adjusted to optimize a wanted signal signal-to-noise ratio (SNR) and the blocker margin. The method further includes adjusting a receiver front-end gain based on the adjusted linear target.
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公开(公告)号：US20170142671A1
公开(公告)日：2017-05-18
申请号：US14944578
申请日：2015-11-18
Applicant: QUALCOMM Incorporated
Inventor： Yann Ly-Gagnon , Le Nguyen Luong
CPC classification number: H04W52/52 , H03G3/3036 , H03G3/3052 , H03G3/3068 , H03G3/3078 , H03G3/3084 , H04B1/16 , H04B17/20
Abstract: A method for dynamic sizing of a blocker margin by a receiver automatic gain control (AGC) is described. The method includes measuring a wanted signal level and a blocker signal level. The method also includes adjusting a linear target for the wanted signal level at the output of an analog-to-digital converter (ADC) of the receiver based on the blocker signal level. The linear target is adjusted to optimize a wanted signal signal-to-noise ratio (SNR) and the blocker margin. The method further includes adjusting a receiver front-end gain based on the adjusted linear target.
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公开(公告)号：US09628309B1
公开(公告)日：2017-04-18
申请号：US15016731
申请日：2016-02-05
Applicant: QUALCOMM Incorporated
Inventor： Le Nguyen Luong , Yoshiro Fukuoka
CPC classification number: H04L25/03057
Abstract: A method performed by a wireless device includes receiving a first signal that contains one or more modulated symbols and determining a signal strength of the first signal. The method also includes adjusting a remembrance factor based on the signal strength of the first signal and demodulating the one or more modulated symbols based on the first signal and based on a number of previously demodulated symbols. The number of previously demodulated symbols utilized in the demodulation is based on the remembrance factor.
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公开(公告)号：US09154348B2
公开(公告)日：2015-10-06
申请号：US14292616
申请日：2014-05-30
Applicant: QUALCOMM Incorporated
Inventor： RaviKiran Gopalan , Le Nguyen Luong
CPC classification number: H04L27/12 , H04L25/4908 , H04L27/20
Abstract: A method for improving communication sensitivity by a wireless communication device is described. The method includes obtaining a string of bits. The method also includes mapping each bit in the string of bits to a pre-allocated bit pattern to create a series of concatenated pre-allocated bit patterns. The method further includes generating a modulated signal based on the series. The method additionally includes transmitting the modulated signal.
Abstract translation: 描述了一种通过无线通信设备提高通信灵敏度的方法。 该方法包括获得一串比特。 该方法还包括将比特串中的每个比特映射到预先分配的比特模式以创建一系列级联的预先分配的比特模式。 该方法还包括基于该系列生成调制信号。 该方法还包括发送调制信号。
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