公开(公告)号：WO1996010879A1

公开(公告)日：1996-04-11

申请号：PCT/US1995009774

申请日：1995-07-31

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  LING, Fuyun ,  SEXTON, Thomas, A. ,  BRUCKERT, Gene

IPC: H04L27/30

CPC classification number: H04B1/7087 ,  H04B1/707 ,  H04B1/7117 ,  H04B2201/70703 ,  H04B2201/70705 ,  H04J3/0605 ,  H04L25/0202 ,  H04L27/2276

Abstract: A method and apparatus is provided for facilitating coherent communication reception. A received reference symbol coded spread-spectrum communication signal is despread with a spreading code to derive a stream of reference samples (152) and a stream of data samples (158). The channel response is estimated by utilizing the stream of reference samples (152). An offset frequency detector (443) determines an offset to be applied to the received signal via a frequency locked loop (456), while a timing control (176) compensates for slow timing drift and fast fading based on power estimates derived from the stream of reference samples (152) and/or the stream of data samples (158). A rate estimator determines the rate at which the information was encoded, and the rate information is used to optimize the timing control (176), frequency offset detector (443) and channel estimator (154). Thus an improved detection of estimated data symbols from the stream of received data samples (158) is provided.

Abstract translation: 提供了一种用于促进相干通信接收的方法和装置。 接收到的参考符号编码扩频通信信号用扩展码解扩，以导出参考样本流（152）和数据样本流（158）。 通过利用参考样本流来估计信道响应（152）。 偏移频率检测器（443）通过频率锁定环路（456）确定要施加到接收信号的偏移，而定时控制（176）根据从 参考样本（152）和/或数据样本流（158）。 速率估计器确定信息被编码的速率，速率信息用于优化定时控制（176），频率偏移检测器（443）和信道估计器（154）。 因此，提供了从接收数据样本流（158）中对估计数据符号进行改进的检测。

公开(公告)号：EP0732022B1

公开(公告)日：2003-06-11

申请号：EP95930789.3

申请日：1995-07-31

Applicant: MOTOROLA, INC.

Inventor： LING, Fuyun ,  SEXTON, Thomas, A. ,  BRUCKERT, Gene

IPC: H04L27/30 ,  H04L7/00 ,  H04K1/00 ,  H04B1/707

CPC classification number: H04B1/7087 ,  H04B1/707 ,  H04B1/7117 ,  H04B2201/70703 ,  H04B2201/70705 ,  H04J3/0605 ,  H04L25/0202 ,  H04L27/2276

公开(公告)号：EP0732022A1

公开(公告)日：1996-09-18

申请号：EP95930789.0

申请日：1995-07-31

Applicant: MOTOROLA, INC.

Inventor： LING, Fuyun ,  SEXTON, Thomas, A. ,  BRUCKERT, Gene

IPC: H04L27 ,  H04B1 ,  H04J3 ,  H04L7 ,  H04L25

CPC classification number: H04B1/7087 ,  H04B1/707 ,  H04B1/7117 ,  H04B2201/70703 ,  H04B2201/70705 ,  H04J3/0605 ,  H04L25/0202 ,  H04L27/2276

Abstract: A method and apparatus is provided for facilitating coherent communication reception. A received reference symbol coded spread-spectrum communication signal is despread with a spreading code to derive a stream of reference samples (152) and a stream of data samples (158). The channel response is estimated by utilizing the stream of reference samples (152). An offset frequency detector (443) determines an offset to be applied to the received signal via a frequency locked loop (456), while a timing control (176) compensates for slow timing drift and fast fading based on power estimates derived from the stream of reference samples (152) and/or the stream of data samples (158). A rate estimator determines the rate at which the information was encoded, and the rate information is used to optimize the timing control (176), frequency offset detector (443) and channel estimator (154). Thus an improved detection of estimated data symbols from the stream of received data samples (158) is provided.