公开(公告)号：US09680632B2

公开(公告)日：2017-06-13

申请号：US14863082

申请日：2015-09-23

Applicant: QUALCOMM Incorporated

Inventor： Eunmo Kang ,  Mahbod Mofidi ,  Paul DenBoer ,  Xiao Deng ,  Ashish Subhash Banthia ,  Vincent So ,  Vikram Meka

IPC: H04L7/00 ,  H04L7/10 ,  H04B5/00

CPC classification number: H04L7/0087 ,  H04B5/00 ,  H04L7/00 ,  H04L7/0037 ,  H04L7/10

Abstract: A method for communications is described. The method includes determining a symbol timing drift elimination amount for a received signal. The method further includes eliminating part of the symbol timing drift by adjusting a reference clock for the modem. Determining the symbol timing drift elimination amount may be based on at least one of a symbol timing drift estimate, a symbol timing error, a packet acquisition indicator, a packet validity indicator, demodulated bits or a carrier presence indicator.

公开(公告)号：US20160028445A1

公开(公告)日：2016-01-28

申请号：US14626106

申请日：2015-02-19

Applicant: QUALCOMM Incorporated

Inventor： Mahbod MOFIDI ,  Vincent So ,  Kritarth Yudhish ,  Sumanth Keragodu Surya Prakash

IPC: H04B5/00

CPC classification number: H04B5/0081 ,  G06K7/10297 ,  H04B5/0025

Abstract: Aspects disclosed herein relate to mitigating an antenna over-coupling condition in near field communication (NFC) devices. A transmission signal for a transmitted carrier is generated at a transmit circuit of an initiator NFC device, and a received carrier is received at a receive circuit of the initiator NFC device. The initiator NFC device can detect an antenna over-coupling condition related to antenna coupling with a remote NFC device based at least in part on the transmission signal and the received carrier. Where the condition is detected, at least one of a transmit circuit parameter for the transmit circuit or a receive circuit parameter of the receive circuit is modified to reduce the antenna over-coupling condition

Abstract translation: 本文公开的方面涉及减轻近场通信（NFC）装置中的天线过耦合状况。 在发起者NFC设备的发送电路处生成用于发送的载波的发送信号，并且在发起者NFC设备的接收电路处接收所接收的载波。 发起者NFC设备可以至少部分地基于传输信号和所接收的载波来检测与远程NFC设备的天线耦合有关的天线过耦合状况。 在检测到条件的情况下，修改发射电路的发射电路参数或接收电路的接收电路参数中的至少一个，以减少天线过耦合条件

公开(公告)号：US20160241382A1

公开(公告)日：2016-08-18

申请号：US14863082

申请日：2015-09-23

Applicant: QUALCOMM Incorporated

Inventor： Eunmo Kang ,  Mahbod Mofidi ,  Paul DenBoer ,  Xiao Deng ,  Ashish Subhash Banthia ,  Vincent So ,  Vikram Meka

IPC: H04L7/00

CPC classification number: H04L7/0087 ,  H04B5/00 ,  H04L7/00 ,  H04L7/0037 ,  H04L7/10

Abstract: A method for communications is described. The method includes determining a symbol timing drift elimination amount for a received signal. The method further includes eliminating part of the symbol timing drift by adjusting a reference clock for the modem. Determining the symbol timing drift elimination amount may be based on at least one of a symbol timing drift estimate, a symbol timing error, a packet acquisition indicator, a packet validity indicator, demodulated bits or a carrier presence indicator.

Abstract translation: 描述用于通信的方法。 该方法包括确定接收信号的符号定时漂移消除量。 该方法还包括通过调整调制解调器的参考时钟来消除部分符号定时漂移。 确定符号定时漂移消除量可以基于符号定时漂移估计，符号定时误差，分组获取指示符，分组有效性指示符，解调比特或载波存在指示符中的至少一个。