公开(公告)号：US3632905A

公开(公告)日：1972-01-04

申请号：US3632905D

申请日：1969-12-19

Applicant: BELL TELEPHONE LABOR INC

Inventor： THOMAS EDMOND J ,  UNRUE JOHN E JR

IPC: H04B3/23 ,  H04B3/22

CPC classification number: H04B3/23

Abstract: The method disclosed accomplishes a reduction in the initial ''''distance'''' between the tap gain vector, of a transversal filter adaptive echo canceller, and its optimum value. Tap gain magnitudes, related to the statistical distribution of echo path impulse response envelopes, are stored. The gains associated with each tap component are initially set to zero and adaptation then proceeds for a period of time sufficient to determine the polarity of each tap component. The determined polarities of each tap component are respectively assigned to the stored tap gain magnitudes and the tap components are set in accordance with the same. Convergence thence proceeds naturally from this new setting of the gain vector.

Abstract translation: 所公开的方法实现了横向滤波器自适应回波消除器的抽头增益矢量与其最佳值之间的初始“距离”的减小。 存储与回波路径脉冲响应包络的统计分布相关的抽头增益幅度。 与每个抽头分量相关联的增益最初被设置为零，并且适应随后进行足以确定每个抽头分量的极性的时间段。 每个抽头分量的确定的极性分别被分配给存储的抽头增益幅度，并且抽头分量根据它们设置。 收敛因此从增益矢量的新设置中自然而然地进行。

公开(公告)号：US3508017A

公开(公告)日：1970-04-21

申请号：US3508017D

申请日：1967-12-08

Applicant: BELL TELEPHONE LABOR INC

Inventor： UNRUE JOHN E JR

IPC: H04B3/23 ,  H04B3/20

CPC classification number: H04B3/23

公开(公告)号：US3497641A

公开(公告)日：1970-02-24

申请号：US3497641D

申请日：1967-08-02

Applicant: BELL TELEPHONE LABOR INC

Inventor： HELDER GEORGE K ,  UNRUE JOHN E JR

IPC: H04B3/46

CPC classification number: H04B3/493

公开(公告)号：US3471657A

公开(公告)日：1969-10-07

申请号：US3471657D

申请日：1966-11-21

Applicant: BELL TELEPHONE LABOR INC

Inventor： HOLMAN ERWIN W ,  UNRUE JOHN E JR

IPC: H04B3/20

CPC classification number: H04B3/20