公开(公告)号：US20130102255A1

公开(公告)日：2013-04-25

申请号：US13716030

申请日：2012-12-14

Applicant: QUALCOMM Incorporated

Inventor： Paul J. Husted ,  Bevan M. Baas

IPC: H04B15/00

CPC classification number: H04B15/00 ,  H04B1/1027 ,  H04L27/0014

Abstract: Transient distortion is compensated for by multiplying an exponentially-decaying phase shift onto the distorted waveform. The exponentially decaying phase shift waveform is patterned after the transient which typically takes the form of an exponential and occurs upon introduction of power to a circuit or circuit component. A digital circuit produces an appropriate exponentially decaying waveform which is used as the input for a look up table whose output is a complex sinusoidal waveform capable of compensating for the distortion. The complex sinusoid is multiplied onto the transmitted waveform. The decaying exponential is biased so that it crosses a threshold at which point the compensating circuitry is turned off.

Abstract translation: 通过将指数衰减相移乘以失真波形来补偿瞬态失真。 在典型地呈指数形式的瞬态之后，指数衰减相移波形被图案化，并且在向电路或电路部件引入电力时发生。 数字电路产生适当的指数衰减波形，其被用作查询表的输入，其输出是能够补偿失真的复数正弦波形。 复数正弦波被乘以传输的波形。 衰减指数被偏置，使得它越过阈值，在该阈值处补偿电路被关断。

公开(公告)号：US08494568B2

公开(公告)日：2013-07-23

申请号：US13716030

申请日：2012-12-14

Applicant: QUALCOMM Incorporated

Inventor： Paul J. Husted ,  Bevan M. Baas

IPC: H04B15/00

CPC classification number: H04B15/00 ,  H04B1/1027 ,  H04L27/0014

Abstract: Transient distortion is compensated for by multiplying an exponentially-decaying phase shift onto the distorted waveform. The exponentially decaying phase shift waveform is patterned after the transient which typically takes the form of an exponential and occurs upon introduction of power to a circuit or circuit component. A digital circuit produces an appropriate exponentially decaying waveform which is used as the input for a look up table whose output is a complex sinusoidal waveform capable of compensating for the distortion. The complex sinusoid is multiplied onto the transmitted waveform. The decaying exponential is biased so that it crosses a threshold at which point the compensating circuitry is turned off.

Abstract translation: 通过将指数衰减相移乘以失真波形来补偿瞬态失真。 在典型地呈指数形式的瞬态之后，指数衰减相移波形被图案化，并且在向电路或电路部件引入电力时发生。 数字电路产生适当的指数衰减波形，其被用作查询表的输入，其输出是能够补偿失真的复数正弦波形。 复数正弦波被乘以传输的波形。 衰减指数被偏置，使得它越过阈值，在该阈值处补偿电路被关断。