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公开(公告)号：US07412125B2
公开(公告)日：2008-08-12
申请号：US11281931
申请日：2005-11-16
IPC分类号： G02B6/28
CPC分类号： H04B10/25133
摘要： A method of providing dispersion compensation includes providing a dispersion signal indicative of an amount of dispersion for at least one channel of a multi-channel optical signal. A dispersion compensator is controlled in accordance with the dispersion signal to optically compensate for the dispersion of the optical signal.
摘要翻译： 提供色散补偿的方法包括提供指示多通道光信号的至少一个通道的色散量的色散信号。 色散补偿器根据色散信号进行控制，以光学补偿光信号的色散。
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公开(公告)号：US20090097860A1
公开(公告)日：2009-04-16
申请号：US12189776
申请日：2008-08-11
IPC分类号： H04B10/00
CPC分类号： H04B10/25133
摘要： A method of providing dispersion compensation includes providing a dispersion signal indicative of an amount of dispersion for at least one channel of a multi-channel optical signal. A dispersion compensator is controlled in accordance with the dispersion signal to optically compensate for the dispersion of the optical signal.
摘要翻译： 提供色散补偿的方法包括提供指示多通道光信号的至少一个通道的色散量的色散信号。 色散补偿器根据色散信号进行控制，以光学补偿光信号的色散。
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公开(公告)号：US07773839B2
公开(公告)日：2010-08-10
申请号：US12189776
申请日：2008-08-11
CPC分类号： H04B10/25133
摘要： A method of providing dispersion compensation includes providing a dispersion signal indicative of an amount of dispersion for at least one channel of a multi-channel optical signal. A dispersion compensator is controlled in accordance with the dispersion signal to optically compensate for the dispersion of the optical signal.
摘要翻译： 提供色散补偿的方法包括提供指示多通道光信号的至少一个通道的色散量的色散信号。 色散补偿器根据色散信号进行控制，以光学补偿光信号的色散。
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4.发明申请OFDM/DMT/digital communications system including partial sequence symbol processing 有权OFDM / DMT /数字通信系统，包括部分序列符号处理公开(公告)号：US20080144487A1
公开(公告)日：2008-06-19
申请号：US11982449
申请日：2007-10-31
IPC分类号： H04J11/00
CPC分类号： H04L27/2662 , H04L5/023 , H04L5/1453 , H04L27/20 , H04L27/2602 , H04L27/2628 , H04L27/2647 , H04L27/2657
摘要： A method of managing a signal over a symbol period includes supplying samples of the signal at beginning and end portions of the symbol period. The method further includes suppressing the supply of samples of the signal at a middle portion of the symbol period.
摘要翻译： 一种在符号周期上管理信号的方法包括在符号周期的开始和结束部分提供信号的样本。 该方法还包括抑制在符号周期的中间部分处提供信号的样本。
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5.发明授权Apparatus and method for symbol alignment in a multi-point OFDM or DMT digital communications system 失效在多点OFDM或DMT数字通信系统中的符号对准的装置和方法公开(公告)号：US06285654B1
公开(公告)日：2001-09-04
申请号：US08845544
申请日：1997-04-24
IPC分类号： H04J1100
CPC分类号： H04L5/1453 , H04L5/023 , H04L27/2605 , H04L27/2657 , H04L27/2662 , H04L27/2678
摘要： A multi-point communications system that comprises a head end unit disposed at a primary site and a plurality of receivers disposed at remote sites. The head end unit includes a transmitter for transmitting OFDM/DMT symbols over a predetermined number of bins across a transmission medium. The OFDM/DMT symbols are transmitted in periodically occurring formatted symbol frames. The cyclic prefix includes a predetermined periodic signal superimposed thereon. The receivers receive the OFDM/DMT symbols over a subset of the predetermined number of bins from the transmission medium and use the superimposed signals to attain symbol alignment. In accordance with a further aspect of the present invention, the receivers apply a predetermined incremental phase shift to received samples corresponding to the received OFDM/DMT symbols to thereby compensate for phase shifts. The multi-point communications system may include a similar system for aligning symbols transmissions from a remote service unit having a transmitter. Such a system includes a plurality of remote service units each including a transmitter for transmitting OFDM/DMT symbols over a predetermined number of bins across a transmission medium. Each of the plurality of remote service units is operable in a symbol alignment mode in which the transmitter transmits a broad band periodic signal. The head end unit includes a receiver for receiving the OFDM/DMT symbols, including the broad band periodic signal, from the transmission medium. The head end unit uses the time position of the broad band periodic signal to align the symbol transmissions of the remote service unit.
摘要翻译： 一种多点通信系统，包括设置在主站点处的头端单元和设置在远程站点的多个接收器。 头端单元包括用于通过传输介质在预定数量的箱上发送OFDM / DMT符号的发射机。 OFDM / DMT符号以周期性出现的格式化符号帧发送。 循环前缀包括叠加在其上的预定周期信号。 接收机在来自传输介质的预定数量的分组的子集上接收OFDM / DMT符号，并使用叠加的信号来获得符号对准。 根据本发明的另一方面，接收机对与所接收的OFDM / DMT符号相对应的接收样本应用预定的增量相移，从而补偿相移。 多点通信系统可以包括用于对准具有发射机的远程服务单元的符号传输的类似系统。 这样的系统包括多个远程服务单元，每个远程服务单元包括用于通过传输介质在预定数量的箱上发送OFDM / DMT符号的发射机。 多个远程服务单元中的每一个可以在发射器发射宽带周期信号的符号对准模式中操作。 头端单元包括用于从传输介质接收包括宽带周期信号的OFDM / DMT符号的接收器。 头端单元使用宽带周期信号的时间位置来对准远程服务单元的符号传输。
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6.发明授权Multi-point OFDM/DMT digital communications system including remote service unit with improved transmitter architecture 失效多点OFDM / DMT数字通信系统，包括具有改进发射机架构的远程业务单元
公开(公告)号：US6118758A
公开(公告)日：2000-09-12
申请号：US772321
申请日：1996-12-23
CPC分类号： H04L27/2662 , H04L27/20 , H04L27/2602 , H04L27/2628 , H04L27/2647 , H04L5/023 , H04L5/1453 , H04L27/2657
摘要： A multi-point communications system is set forth herein. The communications system includes a receiver and transmitter disposed at a primary site for communication with a plurality of remote service units disposed at respective secondary sites. The receiver of the primary site receives OFDM/DMT signals over a number of transmission bins. A transmitter at the remote service unit includes an improved transmitter architecture. The transmitter comprises a first circuit for converting a signal into a first serial digital data stream and a second circuit for generating a second serial digital data stream from the first serial digital data stream of the first means. The second serial digital data stream is a digital representation of an OFDM/DMT signal that is to be transmitted to the receiver of the primary site and is generated from the first serial digital data stream through a modulated direct digital synthesis thereof. A third circuit is used to convert the second serial digital data stream into an analog OFDM/DMT signal for transmission to the receiver of the primary site.
摘要翻译： 本文阐述了一种多点通信系统。 通信系统包括设置在主站点处的接收机和发射机，用于与设置在相应次要站点处的多个远程服务单元进行通信。 主站点的接收机通过多个传输箱接收OFDM / DMT信号。 远程服务单元的发射机包括改进的发射机架构。 发射机包括用于将信号转换成第一串行数字数据流的第一电路和用于从第一装置的第一串行数字数据流产生第二串行数字数据流的第二电路。 第二串行数字数据流是OFDM / DMT信号的数字表示，其将被发送到主站点的接收机并且通过其调制的直接数字合成从第一串行数字数据流生成。 第三电路用于将第二串行数字数据流转换为模拟OFDM / DMT信号，以传输到主站点的接收机。
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公开(公告)号：US4772884A
公开(公告)日：1988-09-20
申请号：US787541
申请日：1985-10-15
申请人： Larry F. Weber , Richard C. Younce
发明人： Larry F. Weber , Richard C. Younce
CPC分类号： G09G3/293 , G09G3/2922 , G09G2320/0228 , G09G3/297
摘要： An AC gas discharge display panel is described which employs the phenomenon of plasma spreading. In the panel, plasma spreading or "coupling" is employed to couple the plasma to an addressed cell to one of a plurality of pixels to be illuminated. The spreading is controlled by assuring that the cell wall voltages are properly related so that the plasma's electrons migrate to a region where the voltages are approximately equal to or more positive than the wall voltages where the plasma originated. Paired sustain electrodes are selectively energized to enable diversion of the coupled plasma to the desired pixel, so that upon subsequent applications of a sustain voltage, the desired pixel is illuminated (or erased) as the case may be.
摘要翻译： 描述了采用等离子体扩散现象的AC气体放电显示面板。 在面板中，采用等离子体扩展或“耦合”将等离子体耦合到寻址的单元到待照明的多个像素中的一个。 通过确保电池壁电压适当地相关，使得等离子体的电子迁移到电压近似等于或大于等离子体产生的壁电压的正值的区域来控制扩展。 配对的维持电极被选择性地通电以使得耦合的等离子体能够转移到期望的像素，使得在随后施加维持电压时，根据情况可以照亮（或擦除）期望的像素。
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8.发明授权Reconfigurable optical add/drop multiplexer network element for C-band and L-band optical signals 有权用于C波段和L波段光信号的可重配置的光分插复用器网元公开(公告)号：US09130692B2
公开(公告)日：2015-09-08
申请号：US13453416
申请日：2012-04-23
CPC分类号： H04J14/0204 , H04J14/0212 , H04J14/0217
摘要： A method for routing C-band and L-band optical signals, and a system, apparatus, and computer program that operate in accordance with the method. The method comprises selecting one or more C-band optical signals using one or more C-band components, resulting in one or more selected C-band optical signals. One or more L-band optical signals are selected using one or more L-band components, resulting in one or more selected L-band optical signals. The selected C-band and L-band optical signals are combined.
摘要翻译： 一种用于路由C波段和L波段光信号的方法，以及根据该方法操作的系统，装置和计算机程序。 该方法包括使用一个或多个C波段分量来选择一个或多个C波段光信号，产生一个或多个选择的C波段光信号。 使用一个或多个L波段分量选择一个或多个L波段光信号，得到一个或多个选择的L波段光信号。 所选择的C波段和L波段光信号被组合。
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公开(公告)号：US09020365B2
公开(公告)日：2015-04-28
申请号：US12082091
申请日：2008-04-08
IPC分类号： H04B10/12 , H04B10/00 , H04B10/06 , H04B10/2569 , H04B10/61 , H04B10/079
CPC分类号： H04B10/2569 , H04B10/07953 , H04B10/6162
摘要： Current optical networks are engineered to handle amplifier noise and chromatic dispersion. Polarization mode dispersion occurs in optical networks due splitting of the light energy of a pulse propagating in a fiber into two modes. Compensating for polarization mode dispersion is a difficult and expensive task and hence only few commercial systems have been deployed to deal with this issue. A polarization mode dispersion compensation module according to an example embodiment of the present invention compensates for polarization mode dispersion by determining a performance metric related to an error rate of an optical signal in at least one polarization mode in a filtered state. Based on the performance metric, a control vector is determined to control the optical signal in the at least one polarization mode in the filtered state. The control vector is then applied to a polarization effecting device to compensate for polarization mode dispersion.
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10.发明申请RECONFIGURABLE OPTICAL ADD/DROP MULTIPLEXER NETWORK ELEMENT FOR C-BAND AND L-BAND OPTICAL SIGNALS 有权用于C带和L带光信号的可重新配置的光学增益/多路复用器网络元件公开(公告)号：US20130279908A1
公开(公告)日：2013-10-24
申请号：US13453416
申请日：2012-04-23
CPC分类号： H04J14/0204 , H04J14/0212 , H04J14/0217
摘要： A method for routing C-band and L-band optical signals, and a system, apparatus, and computer program that operate in accordance with the method. The method comprises selecting one or more C-band optical signals using one or more C-band components, resulting in one or more selected C-band optical signals. One or more L-band optical signals are selected using one or more L-band components, resulting in one or more selected L-band optical signals. The selected C-band and L-band optical signals are combined.
摘要翻译： 一种用于路由C波段和L波段光信号的方法，以及根据该方法操作的系统，装置和计算机程序。 该方法包括使用一个或多个C波段分量选择一个或多个C波段光信号，产生一个或多个选择的C波段光信号。 使用一个或多个L波段分量选择一个或多个L波段光信号，得到一个或多个选择的L波段光信号。 所选择的C波段和L波段光信号被组合。
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