公开(公告)号：WO1997036377A1

公开(公告)日：1997-10-02

申请号：PCT/US1997004806

申请日：1997-03-25

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  KLAYMAN, Jeffrey, T. ,  PERREAULT, John, A. ,  UNGER, Katherine ,  SCHROEDER, Stephen

IPC: H03M13/00

CPC classification number: H04L1/0021 ,  H03M13/35 ,  H04L1/0009 ,  H04L1/0025

Abstract: An apparatus (101, 110) and method for adaptive forward error correction in a data communication system (100) provides for dynamically changing forward error correction parameters based upon communication channel conditions. Data having a current degree of forward error correction is received (305), and a channel parameter is monitored (310). A threshold level for the channel parameter is determined (315), and the monitored channel parameter is compared to the threshold level (320). When the channel parameter is not within a predetermined or adaptive variance of the threshold level, a revised forward error correction parameter having a greater or lesser degree of forward error correction capability is selected (330, 340, 350, 360), and the revised forward error correction parameter is transmitted (370). The device receiving the revised forward error correction parameter, such as a secondary station (110), then transmits data encoded utilizing the revised error correction parameter (425).

Abstract translation: 一种用于数据通信系统（100）中的自适应前向纠错的装置（101,110）和方法，用于基于通信信道条件动态地改变前向纠错参数。 接收到具有当前程度的前向纠错的数据（305），并且监视信道参数（310）。 确定通道参数的阈值水平（315），并将所监视的通道参数与阈值水平进行比较（320）。 当信道参数不在阈值水平的预定或自适应方差内时，选择具有更大或更小程度的前向纠错能力的经修正的前向纠错参数（330,340,350,360），并修改前向 发送错误校正参数（370）。 接收经修正的前向纠错参数（例如次站（110））的设备然后发送利用经修正的纠错参数（425）编码的数据。

公开(公告)号：EP0829144A1

公开(公告)日：1998-03-18

申请号：EP97917614.0

申请日：1997-03-25

Applicant: MOTOROLA, INC.

Inventor： KLAYMAN, Jeffrey, T. ,  PERREAULT, John, A. ,  UNGER, Katherine ,  SCHROEDER, Stephen

IPC: H03M13 ,  H04L1

CPC classification number: H04L1/0021 ,  H03M13/35 ,  H04L1/0009 ,  H04L1/0025

Abstract: An apparatus (101, 110) and method for adaptive forward error correction in a data communication system (100) provides for dynamically changing forward error correction parameters based upon communication channel conditions. Data having a current degree of forward error correction is received (305), and a channel parameter is monitored (310). A threshold level for the channel parameter is determined (315), and the monitored channel parameter is compared to the threshold level (320). When the channel parameter is not within a predetermined or adaptive variance of the threshold level, a revised forward error correction parameter having a greater or lesser degree of forward error correction capability is selected (330, 340, 350, 360), and the revised forward error correction parameter is transmitted (370). The device receiving the revised forward error correction parameter, such as a secondary station (110), then transmits data encoded utilizing the revised error correction parameter (425).