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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：US20140270019A1
公开(公告)日：2014-09-18
申请号：US13924243
申请日：2013-06-21
Applicant: Qualcomm Incorporated
Inventor： Yann Ly-Gagnon , Paul Husted
IPC: H04B1/14
CPC classification number: H04L27/063 , H03D1/04 , H03D7/165 , H03D7/18 , H04B1/30 , H04B2001/1072 , H04L27/3863
Abstract: A method of operating a receiver in a communications system is disclosed. The receiver receives a radio-frequency (RF) data signal and converts the RF data signal to an intermediate frequency. The receiver then determines whether a blocker image interferes with the received data signal, and selectively adjusts the intermediate frequency to which the data signal is converted based on the determination. The receiver may lower the intermediate frequency if the blocker image interferes with the received data signal. The receiver may also deactivate a quadrature chain of the receiver if the blocker image interferes with the received data signal.
Abstract translation: 公开了一种在通信系统中操作接收机的方法。 接收机接收射频（RF）数据信号，并将RF数据信号转换成中频。 然后，接收器确定阻塞图像是否干扰接收到的数据信号，并且基于该确定来选择性地调整数据信号被转换的中频。 如果阻塞图像干扰接收到的数据信号，则接收机可以降低中频。 如果阻塞图像干扰接收的数据信号，则接收机也可以去激活接收机的正交链。
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公开(公告)号：US20130281035A1
公开(公告)日：2013-10-24
申请号：US13920820
申请日：2013-06-18
Applicant: QUALCOMM Incorporated
Inventor： Yann Ly-Gagnon
IPC: H03F3/24
CPC classification number: H03F3/24 , H03G3/3042 , H04B17/13 , H04B17/19
Abstract: A system and method for measuring transmission power distortion in a wireless communication device are disclosed. In one embodiment, the method comprises reading an operating temperature of the wireless communication device and enabling a loopback path between a transmission circuit and a receiver circuit of the wireless communication device. Using the loopback path, the wireless communication device can calibrate the transmission power output by storing data for compensating the distortion of the transmission power. The data can be stored in a calibration look up table for use by the wireless communication device.
Abstract translation: 公开了一种用于测量无线通信设备中的传输功率失真的系统和方法。 在一个实施例中，该方法包括读取无线通信设备的工作温度并使能无线通信设备的发送电路和接收机电路之间的环回路径。 使用环回路径，无线通信装置可以通过存储用于补偿发送功率的失真的数据来校准发送功率输出。 数据可以存储在校准查询表中以供无线通信设备使用。
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公开(公告)号：US08885692B2
公开(公告)日：2014-11-11
申请号：US13734899
申请日：2013-01-04
Applicant: QUALCOMM Incorporated
Inventor： Yann Ly-Gagnon
CPC classification number: H04B1/62 , H04L27/364 , H04L27/3854 , H04L2027/0016 , H04L2027/0022
Abstract: Embodiments of the present invention provide an apparatus comprising a transceiver having a receiver and a transmitter connected through a segment of a calibration loop back path. The apparatus also comprises a control system configured to communicate with the transceiver. The calibration loop back path has an intentional phase shift that can be toggled between an off state and an on state by the control system. The control system is configured to calculate the intentional phase shift by examining the difference of a first and second phase angle. The first phase angle is obtained from the transmission of a first pair of signals with the intentional phase shift in the off state. The second phase angle is obtained from the transmission of a second pair of signals with the intentional phase shift in the on state.
Abstract translation: 本发明的实施例提供了一种装置，包括具有接收器和通过校准回路路径的段连接的发射器的收发器。 该装置还包括被配置为与收发器进行通信的控制系统。 校准环回路径具有有意的相移，其可以通过控制系统在关闭状态和导通状态之间切换。 控制系统被配置为通过检查第一和第二相位角的差来计算有意的相移。 从关闭状态的有意相移的第一对信号的传输获得第一相位角。 从第二对信号的传输获得第二相位角，其中有意的相移处于导通状态。
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Patent Agency Ranking
公开(公告)号：US20130121389A1
公开(公告)日：2013-05-16
申请号：US13734899
申请日：2013-01-04
Applicant: Qualcomm Incorporated
Inventor： Yann Ly-Gagnon
IPC: H04B1/62
CPC classification number: H04B1/62 , H04L27/364 , H04L27/3854 , H04L2027/0016 , H04L2027/0022
Abstract: Embodiments of the present invention provide an apparatus comprising a transceiver having a receiver and a transmitter connected through a segment of a calibration loop back path. The apparatus also comprises a control system configured to communicate with the transceiver. The calibration loop back path has an intentional phase shift that can be toggled between an off state and an on state by the control system. The control system is configured to calculate the intentional phase shift by examining the difference of a first and second phase angle. The first phase angle is obtained from the transmission of a first pair of signals with the intentional phase shift in the off state. The second phase angle is obtained from the transmission of a second pair of signals with the intentional phase shift in the on state.
Abstract translation: 本发明的实施例提供了一种装置，包括具有接收器和通过校准回路路径的段连接的发射器的收发器。 该装置还包括被配置为与收发器进行通信的控制系统。 校准环回路径具有有意的相移，其可以通过控制系统在关闭状态和导通状态之间切换。 控制系统被配置为通过检查第一和第二相位角的差来计算有意的相移。 从关闭状态的有意相移的第一对信号的传输获得第一相位角。 从第二对信号的传输获得第二相位角，其中有意的相移处于导通状态。
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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：US09100243B2
公开(公告)日：2015-08-04
申请号：US13924243
申请日：2013-06-21
Applicant: QUALCOMM Incorporated
Inventor： Yann Ly-Gagnon , Paul Husted
CPC classification number: H04L27/063 , H03D1/04 , H03D7/165 , H03D7/18 , H04B1/30 , H04B2001/1072 , H04L27/3863
Abstract: A method of operating a receiver in a communications system is disclosed. The receiver receives a radio-frequency (RF) data signal and converts the RF data signal to an intermediate frequency. The receiver then determines whether a blocker image interferes with the received data signal, and selectively adjusts the intermediate frequency to which the data signal is converted based on the determination. The receiver may lower the intermediate frequency if the blocker image interferes with the received data signal. The receiver may also deactivate a quadrature chain of the receiver if the blocker image interferes with the received data signal.
Abstract translation: 公开了一种在通信系统中操作接收机的方法。 接收机接收射频（RF）数据信号，并将RF数据信号转换成中频。 然后，接收器确定阻塞图像是否干扰接收到的数据信号，并且基于该确定来选择性地调整数据信号被转换的中频。 如果阻塞图像干扰接收到的数据信号，则接收机可以降低中频。 如果阻塞图像干扰接收的数据信号，则接收机也可以去激活接收机的正交链。
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公开(公告)号：US09729179B1
公开(公告)日：2017-08-08
申请号：US15190444
申请日：2016-06-23
Applicant: QUALCOMM Incorporated
Inventor： Mohammad Emadi , Mazhareddin Taghivand , Yann Ly-Gagnon
CPC classification number: H04B1/123 , H04B1/1027 , H04B1/109
Abstract: Systems and methods for interference cancellation in a receiver of wireless signals include receiving a signal comprising an aggressor and a desired signal. The received signal is amplified in a low noise amplifier (LNA) to generate an amplified received signal. The aggressor is extracted from the received signal in a feed-forward path between an input of the LNA and an output of the LNA, to generate an extracted aggressor and the extracted aggressor is subtracted from the amplified received signal to provide the desired signal. An amplify and rotate block in the feed-forward path is used to align a phase of the aggressor to a phase of the amplified received signal in order to enable the subtraction.
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