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公开(公告)号：US20090279637A1
公开(公告)日：2009-11-12
申请号：US12437530
申请日：2009-05-07
CPC分类号： H04B17/373 , H04B17/21 , H04B17/26 , H04B17/309
摘要： A method of reducing bit-error rate is described. The method includes transmitting a data stream of data words at a line rate that is adjustable and equal to a positive delta value added to an established data rate. The method includes accumulating available time slots in the transmitted data stream, and selectively retransmitting a subset of the data words such that the retransmitted data words occupy no more than the accumulated available time slots.
摘要翻译： 描述了一种降低误码率的方法。 该方法包括以可调整且等于添加到建立的数据速率的正增量值的线速度传输数据字的数据流。 该方法包括：在所发送的数据流中累积可用的时隙，并且选择性地重传数据字的子集，使得重传的数据字占用不超过累积的可用时隙。
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公开(公告)号：US20090067537A1
公开(公告)日：2009-03-12
申请号：US12268986
申请日：2008-11-11
IPC分类号： H04L27/30
CPC分类号： H04L27/2637 , H04L5/06 , H04L27/2653
摘要： A communication system utilizing an adjustable link has at least a first data transmission circuit including at least a first communication link circuit. The first communication link circuit has a baseband circuit and at least a passband circuit. The baseband circuit corresponds to a baseband sub-channel and the passband circuit corresponds to a passband sub-channel. The first communication link circuit also includes a circuit that distributes a first subset of a data stream having a first symbol rate to the baseband circuit and a second subset of the data stream having a second symbol rate to the passband circuit. The baseband sub-channel and the passband sub-channel are separated by an adjacent guardband of frequencies. The passband carrier frequency is adjusted to define the guardband and the guardband corresponds to a first notch in a channel response of a first communications channel.
摘要翻译： 利用可调节链路的通信系统具有至少包括至少第一通信链路电路的第一数据传输电路。 第一通信链路电路具有基带电路和至少一个通带电路。 基带电路对应于基带子信道，通带电路对应于通带子信道。 第一通信链路电路还包括将具有第一符号率的数据流的第一子集分配给基带电路的电路和具有第二符号率的数据流的第二子集传送给通带电路。 基带子信道和通带子信道被相邻的频带保护带隔开。 调整通带载波频率以定义保护带，并且保护频带对应于第一通信信道的信道响应中的第一个陷波。
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公开(公告)号：US20090060017A1
公开(公告)日：2009-03-05
申请号：US12269532
申请日：2008-11-12
IPC分类号： H04L27/01
CPC分类号： H04L25/03019 , H04B1/1081 , H04L7/0058 , H04L7/0087 , H04L7/0331 , H04L25/03025 , H04L25/03038 , H04L25/03057 , H04L25/03343 , H04L25/03885
摘要： A signaling circuit having a selectable-tap equalizer. The signaling circuit includes a buffer, a select circuit and an equalizing circuit. The buffer is used to store a plurality of data values that correspond to data signals transmitted on a signaling path during a first time interval. The select circuit is coupled to the buffer to select a subset of data values from the plurality of data values according to a select value. The equalizing circuit is coupled to receive the subset of data values from the select circuit and is adapted to adjust, according to the subset of data values, a signal level that corresponds to a data signal transmitted on the signaling path during a second time interval.
摘要翻译： 一种具有可选择抽头均衡器的信令电路。 信令电路包括缓冲器，选择电路和均衡电路。 缓冲器用于存储对应于在第一时间间隔期间在信令路径上发送的数据信号的多个数据值。 选择电路耦合到缓冲器，以根据选择值从多个数据值中选择数据值的子集。 均衡电路被耦合以从选择电路接收数据值的子集，并且适于根据数据值的子集来调整对应于在第二时间间隔期间在信令路径上发送的数据信号的信号电平。
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公开(公告)号：US20080137783A1
公开(公告)日：2008-06-12
申请号：US12030700
申请日：2008-02-13
IPC分类号： H04L27/22
CPC分类号： H04L27/2637 , H04L5/06 , H04L27/2653
摘要： A communication system utilizing an adjustable link has at least a first data transmission circuit including at least a first communication link circuit. The first communication link circuit has a baseband circuit and at least a passband circuit. The baseband circuit corresponds to a baseband sub-channel and the passband circuit corresponds to a passband sub-channel. The first communication link circuit also includes a circuit that distributes a first subset of a data stream having a first symbol rate to the baseband circuit and a second subset of the data stream having a second symbol rate to the passband circuit. The baseband sub-channel and the passband sub-channel are separated by an adjacent guardband of frequencies. The passband carrier frequency is adjusted to define the guardband and the guardband corresponds to a first notch in a channel response of a first communications channel.
摘要翻译： 利用可调节链路的通信系统具有至少包括至少第一通信链路电路的第一数据传输电路。 第一通信链路电路具有基带电路和至少一个通带电路。 基带电路对应于基带子信道，通带电路对应于通带子信道。 第一通信链路电路还包括将具有第一符号率的数据流的第一子集分配给基带电路的电路和具有第二符号速率的数据流的第二子集给通带电路。 基带子信道和通带子信道被相邻的频带保护带隔开。 调整通带载波频率以定义保护带，并且保护频带对应于第一通信信道的信道响应中的第一个陷波。
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公开(公告)号：US07292629B2
公开(公告)日：2007-11-06
申请号：US10195129
申请日：2002-07-12
CPC分类号： H04L25/03019 , H04B1/1081 , H04L7/0058 , H04L7/0087 , H04L7/0331 , H04L25/03025 , H04L25/03038 , H04L25/03057 , H04L25/03343 , H04L25/03885
摘要： A signaling circuit having a selectable-tap equalizer. The signaling circuit includes a buffer, a select circuit and an equalizing circuit. The buffer is used to store a plurality of data values that correspond to data signals transmitted on a signaling path during a first time interval. The select circuit is coupled to the buffer to select a subset of data values from the plurality of data values according to a select value. The equalizing circuit is coupled to receive the subset of data values from the select circuit and is adapted to adjust, according to the subset of data values, a signal level that corresponds to a data signal transmitted on the signaling path during a second time interval.
摘要翻译： 一种具有可选择抽头均衡器的信令电路。 信令电路包括缓冲器，选择电路和均衡电路。 缓冲器用于存储对应于在第一时间间隔期间在信令路径上发送的数据信号的多个数据值。 选择电路耦合到缓冲器，以根据选择值从多个数据值中选择数据值的子集。 均衡电路被耦合以从选择电路接收数据值的子集，并且适于根据数据值的子集来调整对应于在第二时间间隔期间在信令路径上发送的数据信号的信号电平。
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公开(公告)号：US20130128944A1
公开(公告)日：2013-05-23
申请号：US13729510
申请日：2012-12-28
IPC分类号： H04L25/03
CPC分类号： H04L25/03019 , H04B1/1081 , H04L7/0058 , H04L7/0087 , H04L7/0331 , H04L25/03025 , H04L25/03038 , H04L25/03057 , H04L25/03343 , H04L25/03885
摘要： A signaling circuit having a selectable-tap equalizer. The signaling circuit includes a buffer, a select circuit and an equalizing circuit. The buffer is used to store a plurality of data values that correspond to data signals transmitted on a signaling path during a first time interval. The select circuit is coupled to the buffer to select a subset of data values from the plurality of data values according to a select value. The equalizing circuit is coupled to receive the subset of data values from the select circuit and is adapted to adjust, according to the subset of data values, a signal level that corresponds to a data signal transmitted on the signaling path during a second time interval.
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公开(公告)号：US08311145B2
公开(公告)日：2012-11-13
申请号：US12437530
申请日：2009-05-07
IPC分类号： H04L27/00
CPC分类号： H04B17/373 , H04B17/21 , H04B17/26 , H04B17/309
摘要： A method of reducing bit-error rate is described. The method includes transmitting a data stream of data words at a line rate that is adjustable and equal to a positive delta value added to an established data rate. The method includes accumulating available time slots in the transmitted data stream, and selectively retransmitting a subset of the data words such that the retransmitted data words occupy no more than the accumulated available time slots.
摘要翻译： 描述了一种降低误码率的方法。 该方法包括以可调整且等于添加到建立的数据速率的正增量值的线速度传输数据字的数据流。 该方法包括：在所发送的数据流中累积可用的时隙，并且选择性地重传数据字的子集，使得重传的数据字占用不超过累积的可用时隙。
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公开(公告)号：US08139675B2
公开(公告)日：2012-03-20
申请号：US12907937
申请日：2010-10-19
IPC分类号： H04L27/00
CPC分类号： H04L25/03343 , H04L27/2637
摘要： A multi-tone system includes a data transmission circuit with an interface for receiving a data stream for transmission, a data steam splitter that splits the data stream to produce multiple substreams and a plurality of parallel data preparation circuits. Each data preparation circuit prepares a respective substream for transmission and generates a respective sub-channel signal. At least a first data preparation circuit of the plurality of parallel data preparation circuits includes a first analog filter for filtering a first substream. The first analog filter operates at a sample rate greater than the respective symbol rate of the first substream. The first analog filter provides pre-emphasis of the respective sub-channel signal and attenuation of signals outside of a respective band of frequencies corresponding to the respective sub-channel signal. The data transmission circuit also includes a combiner for combining respective sub-channel signals to generate a data transmission signal.
摘要翻译： 多音系统包括具有用于接收用于传输的数据流的接口的数据传输电路，分割数据流以产生多个子流的数据蒸汽分配器和多个并行数据准备电路。 每个数据准备电路准备相应的子流进行传输，并产生相应的子信道信号。 多个并行数据准备电路的至少第一数据准备电路包括用于对第一子流进行滤波的第一模拟滤波器。 第一模拟滤波器以大于第一子流的相应符号率的采样率操作。 第一模拟滤波器提供相应子信道信号的预加重和对应于相应子信道信号的相应频带之外的信号的衰减。 数据传输电路还包括用于组合各个子信道信号以产生数据传输信号的组合器。
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公开(公告)号：US20110150051A1
公开(公告)日：2011-06-23
申请号：US12907937
申请日：2010-10-19
IPC分类号： H04B1/38
CPC分类号： H04L25/03343 , H04L27/2637
摘要： A multi-tone system includes a data transmission circuit with an interface for receiving a data stream for transmission, a data steam splitter that splits the data stream to produce multiple substreams and a plurality of parallel data preparation circuits. Each data preparation circuit prepares a respective substream for transmission and generates a respective sub-channel signal. At least a first data preparation circuit of the plurality of parallel data preparation circuits includes a first analog filter for filtering a first substream. The first analog filter operates at a sample rate greater than the respective symbol rate of the first substream. The first analog filter provides pre-emphasis of the respective sub-channel signal and attenuation of signals outside of a respective band of frequencies corresponding to the respective sub-channel signal. The data transmission circuit also includes a combiner for combining respective sub-channel signals to generate a data transmission signal.
摘要翻译： 多音系统包括具有用于接收用于传输的数据流的接口的数据传输电路，分割数据流以产生多个子流的数据蒸汽分配器和多个并行数据准备电路。 每个数据准备电路准备相应的子流进行传输，并产生相应的子信道信号。 多个并行数据准备电路的至少第一数据准备电路包括用于对第一子流进行滤波的第一模拟滤波器。 第一模拟滤波器以大于第一子流的相应符号率的采样率操作。 第一模拟滤波器提供相应子信道信号的预加重和对应于相应子信道信号的相应频带之外的信号的衰减。 数据传输电路还包括用于组合各个子信道信号以产生数据传输信号的组合器。
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50.发明授权Adaptive control for mitigating interference in a multimode transmission medium 有权用于减轻多模传输介质中的干扰的自适应控制公开(公告)号：US07194155B1
公开(公告)日：2007-03-20
申请号：US11201404
申请日：2005-08-10
IPC分类号： G02B6/26
CPC分类号： H04B10/2581
摘要： Optical data is processed and transmitted in a multimode transmission medium in a manner that facilitates the mitigation of interference such as that often referred to as intersymbol interference (ISI). According to an example embodiment of the present invention, a spatial light modulator is controlled to adaptively spatially filter light to be passed on a multimode transmission medium such as a multimode optical fiber.
摘要翻译： 在多模传输介质中处理和传输光数据，以便于缓解诸如通常称为符号间干扰（ISI）的干扰。 根据本发明的示例性实施例，控制空间光调制器以自适应地空间滤波要在诸如多模光纤的多模传输介质上传递的光。
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