公开(公告)号：US20140269449A1

公开(公告)日：2014-09-18

申请号：US13841712

申请日：2013-03-15

Applicant: QUALCOMM INCORPORATED

Inventor： Victor Alexander ABRAMSKY ,  Michael Leonard LICCONE ,  Peter SUPRUNOV ,  Shaun Joseph GREANEY

IPC: H04L5/14

CPC classification number: H04L5/14 ,  H04B1/525 ,  H04B1/581

Abstract: A method and circuit are provided that solve the problem of prolonged signal fading in transceivers utilizing dual antenna match in a hybrid transmitter-receiver cancellation circuit, thereby enabling practically implementable full-duplex single channel, or duplexerless frequency division duplex (FDD), wireless communication systems. The method includes controlling dynamic change in signal's amplitude and phase at the receiver port of a hybrid Tx-Rx circuit by continuously varying radiation pattern parameters of at least one antenna, while maintaining nearly constant impedance at the hybrid's antenna interface ports and equalizing propagation delays between the hybrid circuit and both antennas, using a novel circuit design.

Abstract translation: 提供了一种方法和电路，其解决了在混合发射机 - 接收机消除电路中利用双天线匹配的收发机中信号衰落延长的问题，从而使得实际上可实现的全双工单信道或双工无频分双工（FDD）无线通信 系统。 该方法包括通过连续地改变至少一个天线的辐射模式参数来控制混合Tx-Rx电路的接收端处的信号幅度和相位的动态变化，同时在混合天线接口端口保持几乎恒定的阻抗， 混合电路和两个天线，使用新颖的电路设计。

公开(公告)号：US20170303118A1

公开(公告)日：2017-10-19

申请号：US15099092

申请日：2016-04-14

Applicant: QUALCOMM Incorporated

Inventor： Walid Khairy Mohamed AHMED ,  Ori AUSLENDER ,  Victor Alexander ABRAMSKY

IPC: H04W8/30 ,  H04M3/08 ,  H04L12/24 ,  H04L29/06 ,  H04L27/34 ,  H04B1/04

CPC classification number: H04L27/3411 ,  H04B2001/0425 ,  H04L5/001 ,  H04L5/0048 ,  H04L27/2614 ,  H04L27/368 ,  H04M2203/057 ,  H04W24/02 ,  H04W24/04

Abstract: Various aspects described herein relate to resolving failures in digital pre-distortion (DPD) training in wireless communications. A failure during DPD training can be identified for a transceiver. One or both of a severity of the failure or a type of the failure can be determined. It can also be determined whether to perform self-recovery from the failure to continue the DPD training based at least in part on one or both of the severity of the failure or the type of the failure.

公开(公告)号：US20170201952A1

公开(公告)日：2017-07-13

申请号：US14993793

申请日：2016-01-12

Applicant: QUALCOMM Incorporated

Inventor： Walid Khairy Mohamed AHMED ,  Ori AUSLENDER ,  Victor Alexander ABRAMSKY ,  Prashanth HANDE ,  Ran IRON ,  Yeuda RAZ

IPC: H04W52/24 ,  H04B1/62

CPC classification number: H04W52/244 ,  H03F1/3247 ,  H03F3/24 ,  H03F2201/3233 ,  H04B1/62 ,  H04W52/367

Abstract: Various aspects described herein relate to adjusting transmit power of a radio frequency (RF) transceiver. A total power adjustment for adjusting a transmit power of the RF transceiver can be determined. The transmit power can be adjusted to a first adjusted transmit power based at least in part on a first adjustment size that is less than the total power adjustment and determined based at least in part on the transmit power. Digital pre-distortion (DPD) training of the RF transceiver can be performed to adjust one or more coefficients for calibrating the RF transceiver based on the first adjusted transmit power. The first adjusted transmit power can be adjusted to a second adjusted transmit power based at least in part on a second adjustment size that is less than the total power adjustment and computed based at least in part on the first adjusted transmit power.