公开(公告)号：US09813085B1

公开(公告)日：2017-11-07

申请号：US15275317

申请日：2016-09-23

Applicant: QUALCOMM Incorporated

Inventor： Paul Brandon Butler ,  James Gardner ,  Niranjan Talwalkar ,  Burcin Baytekin

IPC: H04B1/04 ,  H04B7/0413 ,  H04B17/13 ,  H04B7/06 ,  H04L5/22

CPC classification number: H04B1/0458 ,  H03F1/3247 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/451 ,  H03F2201/3233 ,  H04B1/0475 ,  H04B7/0413 ,  H04B7/0626 ,  H04B17/13 ,  H04L5/22 ,  H04L27/368

Abstract: A system and method for calibrating digital pre-distortion in a wireless device. A pre-distortion circuit may output a first training signal while a power amplifier of the wireless device is on, to generate a first feedback signal. The first feedback signal may be fed back to the pre-distortion circuit via a receive path of the wireless device. The pre-distortion circuit may output a second training signal while the power amplifier is off, to generate a second feedback signal. The second feedback signal may be fed back to the pre-distortion circuit via the receive path. The pre-distortion circuit may then determine one or more pre-distortion coefficients based on the first and second feedback signals.

公开(公告)号：US09794091B1

公开(公告)日：2017-10-17

申请号：US15254663

申请日：2016-09-01

Applicant: QUALCOMM Incorporated

Inventor： Tevfik Yucek ,  Felix Bitterli ,  Shahram Abdollahi-Alibeik ,  Lalitkumar Nathawad ,  James Gardner ,  Christopher Pisz ,  Patrick Kelliher ,  Burcin Baytekin ,  Suresh Chandrasekaran ,  Mani Krishnan Venkatachari

IPC: H04L27/00 ,  H04B7/0413 ,  H04L12/933

CPC classification number: H04L27/0002 ,  G01S7/021 ,  H04B7/0413 ,  H04K3/226 ,  H04K3/822 ,  H04K2203/18 ,  H04L49/101

Abstract: A method and apparatus are disclosed for a wireless communication device capable of scanning for radar signals while detecting and/or receiving a wireless communication signal. The wireless communication device may include a plurality of local oscillator synthesizers to allow distinct frequency bands to be used for wireless communication signals and radar detection. In some embodiments, the wireless communication device may include a radar detection physical layer (PHY) circuit to detect the presence of radar signals within a received RF signal. The radar detection PHY may have limited functionality suitable primarily for radar signal analysis and not suitable for processing (decoding) communication signals.

公开(公告)号：US09503107B1

公开(公告)日：2016-11-22

申请号：US14885690

申请日：2015-10-16

Applicant: QUALCOMM Incorporated

Inventor： Young Gon Kim ,  Burcin Baytekin ,  Yido Koo ,  Emilia Vailun Lei ,  Jeongsik Yang ,  Yongwang Ding

IPC: H03L7/10 ,  H03L7/187

CPC classification number: H03L7/103 ,  H03J2200/10 ,  H03L1/02 ,  H03L7/07 ,  H03L7/099 ,  H03L7/10 ,  H03L7/187

Abstract: The disclosure is directed to compensating for frequency drift in a voltage-controlled oscillator (VCO). Example methods and systems are described which may detect a signal edge associated with a transceiver, and determine whether one or more lock quality signals indicate that the VCO frequency is outside of an specified range, indicating an unacceptable amount of frequency drift. A frequency tuning setting of the VCO may be adjusted based on the one or more lock quality signals, and a determination may be made whether or not the one or more lock quality signals indicate that the VCO frequency has returned to the specified range. The adjustment of the frequency tuning setting of the VCO may be repeated until the VCO frequency returns to the specified range.

Abstract translation: 本公开旨在补偿压控振荡器（VCO）中的频率漂移。 描述了可以检测与收发器相关联的信号边缘的示例方法和系统，并且确定一个或多个锁定质量信号是否指示VCO频率在指定范围之外，指示不可接受的频率漂移量。 可以基于一个或多个锁定质量信号来调整VCO的频率调谐设置，并且可以确定一个或多个锁定质量信号是否指示VCO频率已经返回到指定的范围。 可以重复VCO的频率调谐设置的调整，直到VCO频率返回到指定的范围。