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公开(公告)号：US5162812A
公开(公告)日：1992-11-10
申请号：US776525
申请日：1991-10-11
IPC分类号： H04B3/06 , H04L25/03 , H04L25/497 , H04L27/34 , H04Q11/04
CPC分类号： H04L25/4975 , H04L25/03343 , H04L25/497 , H04L27/3438 , H04Q11/0471 , H04Q2213/033
摘要： In a telephone local loop transmission arrangement, data is communicated from the customer premises to the central office utilizing a multidimensional, passband signal illustratively at 480 kb/s. Specifically, the transmitted signal is encoded in a trellis code and precoded using a generalized partial response filter. The received signal is processed by a circuitry that implements a trellis decoding in combination with nonlinear filtering.
摘要翻译： 在电话本地环路传输装置中，使用多维通带信号，以480kb / s为例，将数据从客户驻地传送到中心局。 具体地，发送的信号被编码为网格码并且使用广义部分响应滤波器进行预编码。 所接收的信号由与非线性滤波相结合实现网格解码的电路来处理。
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公开(公告)号：US5095497A
公开(公告)日：1992-03-10
申请号：US439134
申请日：1989-11-20
IPC分类号： H04B3/06 , H04L25/03 , H04L25/497 , H04L27/34 , H04Q11/04
CPC分类号： H04L25/4975 , H04L25/03343 , H04L25/497 , H04L27/3438 , H04Q11/0471 , H04Q2213/033
摘要： In a telephone local loop transmission arrangement, data is communicated from the customer premises to the central office utilizing a multi-dimensional, passband signal illustratively at 480 kb/s. Specifically, the transmitted signal is encoded in a trellis code and precoded using a generalized partial response filter. The received signal is processed by a circuitry that implements a trellis decoding in combination with nonlinear filtering.
摘要翻译： 在电话本地环路传输装置中，使用例如480kb / s的多维通带信号将数据从客户驻地传送到中心局。 具体地，发送的信号被编码为网格码并且使用广义部分响应滤波器进行预编码。 所接收的信号由与非线性滤波相结合实现网格解码的电路来处理。
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3.发明授权Parameter estimation techniques applicable to multiple-signal communications media 失效适用于多信号通信媒体的参数估计技术
公开(公告)号：US5963562A
公开(公告)日：1999-10-05
申请号：US923354
申请日：1997-09-04
申请人： Nicholas A. Zervos
发明人： Nicholas A. Zervos
CPC分类号： H04L5/06
摘要： Systems and methods for determining the spectral arrangement of a composite signal that includes a plurality of individual signals, so that one or more individual signals may be separated from the composite signal. According to one embodiment, a first set of samples are taken from the composite signal during a first time duration, and a second set of samples are taken from the composite signal during a second time duration. The first and second time durations are selected such that at least a portion of the second time duration does not temporally overlap the first time duration. A weighing function is applied to the first and second sets of samples to generate weighted sample sets. The autocorrelation between the first and second weighted sample sets is measured, thereby providing information about the bandwidth occupancies of each of a plurality of individual signals within the bandwidth of the composite signal.
摘要翻译： 用于确定包括多个单独信号的复合信号的频谱布置的系统和方法，使得一个或多个单独信号可以与复合信号分离。 根据一个实施例，在第一持续时间期间从复合信号获取第一组采样，并且在第二持续时间期间从复合信号中取出第二组采样。 选择第一和第二持续时间，使得第二持续时间的至少一部分在时间上不与第一持续时间重叠。 称量功能被应用于第一和第二组样本以产生加权样本集。 测量第一和第二加权采样集之间的自相关，从而提供关于复合信号的带宽内的多个单独信号中的每一个的带宽占用的信息。
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公开(公告)号：US5056117A
公开(公告)日：1991-10-08
申请号：US390005
申请日：1989-08-07
CPC分类号： H04L25/03057 , H04L1/0054 , H04L27/3438 , H04L5/143 , Y10S2/917
摘要： In a telephone local loop transmission arrangement, data is communicated from the customer premises to the central office utilizing a multidimensional, passband signal illustratively at 480 kb/s. Specifically, the transmitted signal is encoded in a trellis code and the received signal is processed by a circuitry that implements decision feedback equalization in combination with trellis decoding.
摘要翻译： 在电话本地环路传输装置中，使用多维通带信号，以480kb / s为例，将数据从客户驻地传送到中心局。 具体地，发送的信号被编码为网格码，并且所接收的信号由与网格解码结合执行判决反馈均衡的电路处理。
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