公开(公告)号：JP2005323384A

公开(公告)日：2005-11-17

申请号：JP2005136832

申请日：2005-05-10

Applicant: Motorola Inc ,  モトローラ・インコーポレイテッドMotorola Incorporated

Inventor： LAROSA CHRISTOPHER P ,  CARNEY MICHAEL J ,  QUANBECK CHRIS T

IPC: H04B7/005 ,  H03H7/40 ,  H03H21/00 ,  H04B1/12 ,  H04B3/10 ,  H04L25/03

CPC classification number: H03H21/0012 ,  H03H2021/0083

Abstract: PROBLEM TO BE SOLVED: To provide an apparatus (100) and a method (400) suitable for use in a communication device by equalizing an input signal received to mitigate multipath distortion effects present in the input signal in the communication device.
SOLUTION: A first filter (102) samples an input signal (104) and generates a first filter output (106) based upon the sampled input signal and a filter coefficient array (108). An error signal (112) is then generated based upon a difference between the first filter output (106) and a desired signal (114), and the filter coefficient array (108) is updated based upon a product of the error signal (112) and an adaptation constant (118). A second filter (126) samples a delayed input signal (124) and generates a second filter output (128) based upon the sampled delayed input signal and the filter coefficient array (108).
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种适于在通信设备中使用的装置（100）和方法（400），其通过均衡接收的输入信号来减轻通信设备中的输入信号中存在的多径失真效应。 解决方案：第一滤波器（102）对输入信号（104）进行采样，并基于采样的输入信号和滤波器系数阵列（108）产生第一滤波器输出（106）。 然后基于第一滤波器输出（106）和期望信号（114）之间的差异产生误差信号（112），并且基于误差信号（112）的乘积来更新滤波器系数阵列（108） 和适应常数（118）。 第二滤波器（126）对延迟的输入信号（124）进行采样，并基于采样的延迟输入信号和滤波器系数阵列（108）产生第二滤波器输出（128）。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：GB2414147A

公开(公告)日：2005-11-16

申请号：GB0508309

申请日：2005-04-25

Applicant: MOTOROLA INC

Inventor： LAROSA CHRISTOPHER P ,  CARNEY MICHAEL J ,  QUANBECK CHRIS T

IPC: H04B7/005 ,  H03H7/40 ,  H03H21/00 ,  H04B1/12 ,  H04B3/10 ,  H04L25/03

Abstract: An apparatus (100) and a method (400) suitable for use in a communication device by equalizing an input signal received to mitigate multipath distortion effects present in the input signal in the communication device are provided. A first filter (102) samples the input signal (104) and generates a first filter output (106) based upon the sampled input signal and a filter coefficient array (108). An error signal (112) is then generated based upon a difference between the first filter output (106) and a desired signal (114), and the filter coefficient array (108) is updated based upon a product of the error signal (112) and an adaptation constant (118). A second filter (126) samples a delayed input signal (124) and generates a second filter output (128) based upon the sampled delayed input signal and the filter coefficient array (108). The duration of the delay (120) applied to the input signal or/and the adaptation "constant" may be varied based upon a rate of change of the input signal.

公开(公告)号：GB2414147B

公开(公告)日：2006-12-20

申请号：GB0508309

申请日：2005-04-25

Applicant: MOTOROLA INC

Inventor： LAROSA CHRISTOPHER P ,  CARNEY MICHAEL J ,  QUANBECK CHRIS T

IPC: H03H21/00 ,  H04B7/005 ,  H03H7/40 ,  H04B1/12 ,  H04B3/10 ,  H04L25/03

Abstract: An apparatus ( 100 ) and a method ( 400 ) suitable for use in a communication device by equalizing an input signal received to mitigate multipath distortion effects present in the input signal in the communication device are provided. A first filter ( 102 ) samples the input signal ( 104 ) and generates a first filter output ( 106 ) based upon the sampled input signal and a filter coefficient array ( 108 ). An error signal ( 112 ) is then generated based upon a difference between the first filter output ( 106 ) and a desired signal ( 114 ), and the filter coefficient array ( 108 ) is updated based upon a product of the error signal ( 112 ) and an adaptation constant ( 118 ). A second filter ( 126 ) samples a delayed input signal ( 124 ) and generates a second filter output ( 128 ) based upon the sampled delayed input signal and the filter coefficient array ( 108 ).