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1.发明授权Method and apparatus for updating precoder coefficients in a data communication transmitter 有权用于更新数据通信发射机中的预编码器系数的方法和装置公开(公告)号：US06314135B1
公开(公告)日：2001-11-06
申请号：US09143029
申请日：1998-08-28
IPC分类号： H03H730
CPC分类号： H04L25/03343 , H03H21/0012 , H04L2025/03477 , H04L2025/03617 , H04L2025/03808
摘要： In a data communication system having a channel with time-varying impairments and further having a transmitter with a precoder, a method and apparatus for updating the precoder coefficients. The method and apparatus is based on the arrangement of a duplicate precoder and correction filter in the receiver, where the correction filter generates incremental coefficients. The incremental coefficients are sent via a back channel to the transmitter and added to the current values of the precoder coefficients. The method and apparatus provide DFE-like performance and do not have the delay problems associated with DFEs.
摘要翻译： 在具有时变损失的信道并且还具有带有预编码器的发射机的数据通信系统中，用于更新预编码器系数的方法和装置。 该方法和装置基于接收机中重复预编码器和校正滤波器的布置，其中校正滤波器产生增量系数。 增量系数通过反向通道发送到发射机，并加到预编码器系数的当前值上。 该方法和装置提供类似DFE的性能，并且没有与DFE相关的延迟问题。
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2.发明授权Method and apparatus for nonlinear filtering and controlling the peak-to-average ratio 有权用于非线性滤波和控制峰均比的方法和装置公开(公告)号：US06680978B1
公开(公告)日：2004-01-20
申请号：US09260863
申请日：1999-03-01
IPC分类号： H04B1404
CPC分类号： H04B1/62 , H04B2201/70706 , H04L25/497
摘要： A method and apparatus for providing a precoder filter having peak-to-average ratio (PAR) controller that also serves as a high-pass, low-pass, or band-pass filter. The described invention is includes a modulo device connected in series with the PAR controller and a precoder filter connected in a feedback arrangement. The input to the apparatus is a sequence of data symbols and the output is a spectrally shaped precoded signal having a controlled peak-to-average ratio.
摘要翻译： 一种用于提供也具有高通，低通或带通滤波器的峰值平均比（PAR）控制器的预编码器滤波器的方法和装置。 所描述的发明包括与PAR控制器串联连接的模装置和以反馈装置连接的预编码器滤波器。 该装置的输入是一系列数据符号，并且该输出是具有受控峰均比的频谱形状的预编码信号。
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3.发明授权System, methods and apparatus for increasing the data rate on an existing repeatered telecommunication channel structure 有权用于增加现有重复的电信信道结构的数据速率的系统，方法和装置公开(公告)号：US06625116B1
公开(公告)日：2003-09-23
申请号：US09306919
申请日：1999-05-07
申请人： Kevin W. Schneider , Fred T. Y. Chu
发明人： Kevin W. Schneider , Fred T. Y. Chu
IPC分类号： H04B336
CPC分类号： H04B3/36
摘要： A system, method, and apparatus for increasing the data rate on an existing repeatered telecommunication channel structure. In illustrative embodiments, replacement transceivers and replacement repeaters provide for transferring data streams via the existing channel structure at a rate substantially greater than the data transfer rate of the existing channel structure. The replacement transceivers and replacement repeaters are spectrally compatible with existing services and provide data transfer performance equal to or better than the performance of the existing channel structure.
摘要翻译： 一种用于增加现有重复的电信信道结构上的数据速率的系统，方法和装置。 在说明性实施例中，替换收发器和替换中继器提供经由现有信道结构以基本上大于现有信道结构的数据传输速率的速率传送数据流。 替换收发器和替换中继器与现有业务频谱兼容，并提供等于或优于现有信道结构性能的数据传输性能。
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