公开(公告)号：US07242739B2

公开(公告)日：2007-07-10

申请号：US10460572

申请日：2003-06-12

申请人： Glenn M Boles ,  Alfred Earl Dunlop ,  Manyalibo Joseph Matthews ,  Dusan Suvakovic ,  Doutje T. Van Veen

发明人： Glenn M Boles ,  Alfred Earl Dunlop ,  Manyalibo Joseph Matthews ,  Dusan Suvakovic ,  Doutje T. Van Veen

IPC分类号： H03D3/24

CPC分类号： H04L7/0338 ,  H04L7/042

摘要： A method and apparatus for clock and data recovery that is advantageous in burst-mode systems is disclosed. This clock and data recovery method allows a) fast locking to a rapidly changed phase of the transmission clock, and b) stable tracking of a slowly changing phase of the transmission clock. Such fast locking minimizes the “guard band” between consecutive transmission bursts, while stable tracking provides reliable data tracking, resulting in the efficient use of bandwidth. A plurality of clock signals, is generated, each having a different phase. The phase of an input signal data stream is determined and a desired clock signal in the plurality that corresponds to the phase of the input data stream is selected and used to sample the input signal data stream.

摘要翻译： 公开了一种在突发模式系统中有利的用于时钟和数据恢复的方法和装置。 该时钟和数据恢复方法允许a）快速锁定到传输时钟的快速变化的相位，以及b）稳定跟踪传输时钟的缓慢变化的相位。 这种快速锁定使连续传输突发之间的“保护带”最小化，而稳定跟踪提供可靠的数据跟踪，导致带宽的有效使用。 产生多个时钟信号，每个具有不同的相位。 确定输入信号数据流的相位，并且选择与输入数据流的相位相对应的多个中的期望时钟信号，并将其用于采样输入信号数据流。

公开(公告)号：US07123675B2

公开(公告)日：2006-10-17

申请号：US10255008

申请日：2002-09-25

申请人： Glenn M Boles ,  Alfred Earl Dunlop ,  Ilija Hadzic ,  Manyalibo Joseph Matthews ,  Dusan Suvakovic ,  Doutje T. Van Veen

发明人： Glenn M Boles ,  Alfred Earl Dunlop ,  Ilija Hadzic ,  Manyalibo Joseph Matthews ,  Dusan Suvakovic ,  Doutje T. Van Veen

IPC分类号： H04L7/00

CPC分类号： H04J3/1694 ,  H04J3/0682 ,  H04L7/042

摘要： A clock recovery method is disclosed wherein the FIFO delay of data words and the phase difference between a data word and a receiver clock are used to time data transmissions from a transmitter. The phase difference between the data word and the receiver clock is determined by the offset of a word relative to a desired position in a storage buffer. The FIFO delay is determined either by measuring the difference between a read pointer and a write pointer in the FIFO or, alternatively, by calculating the difference between a timestamp of the time a data word entered the FIFO and the current time as the data word is read from the FIFO.

摘要翻译： 公开了一种时钟恢复方法，其中数据字的FIFO延迟和数据字与接收机时钟之间的相位差用于对发射机进行数据传输。 数据字和接收器时钟之间的相位差由字相对于存储缓冲器中的期望位置的偏移量确定。 通过测量FIFO中的读指针和写指针之间的差来确定FIFO延迟，或者通过计算数据字进入FIFO的时间与当前时间的时间戳之间的差， 从FIFO读取。

公开(公告)号：US08712243B2

公开(公告)日：2014-04-29

申请号：US11015152

申请日：2004-12-17

申请人： Hungkei Keith Chow ,  Manyalibo Joseph Matthews ,  Dusan Suvakovic ,  Doutje T. Van Veen

发明人： Hungkei Keith Chow ,  Manyalibo Joseph Matthews ,  Dusan Suvakovic ,  Doutje T. Van Veen

IPC分类号： H04J14/08 ,  H04B10/00

CPC分类号： H04J3/1694 ,  H04L7/033

摘要： Systems and techniques for multiple bit rate optical data transmission. A passive optical network includes an optical line termination unit (OLT) connected to one or more optical network units (ONUs) by optical elements. The OLT is capable of performing downstream transmission to the ONUs at each of a variety of different bit rates, and each ONU performs upstream transmission at one or more bit rates. The OLT can sense a bit rate of a received transmission and change its operation so as to receive and process the transmission exhibiting the sensed bit rate. Each of the ONUs receives and processes downstream transmissions at one or more bit rates, but each ONU is capable of maintaining a phase and frequency lock to downstream transmissions at all bit rates supported by the OLT. One or more of the ONUs may also receive and process downstream transmissions exhibiting different or changed bit rates.

摘要翻译： 用于多比特率光数据传输的系统和技术。 无源光网络包括通过光学元件连接到一个或多个光网络单元（ONU）的光线路终端单元（OLT）。 OLT能够以各种不同比特率的每一个对ONU执行下行传输，并且每个ONU以一个或多个比特率执行上行传输。 OLT可以感测接收到的传输的比特率并改变其操作，以便接收和处理呈现感测到的比特率的传输。 每个ONU以一个或多个比特速率接收和处理下游传输，但是每个ONU能够在由OLT支持的所有比特率下维持到下行传输的相位和频率锁定。 一个或多个ONU还可以接收和处理呈现不同或改变的比特率的下行传输。

公开(公告)号：US09729360B2

公开(公告)日：2017-08-08

申请号：US13853754

申请日：2013-03-29

申请人： Nagaraj Prasanth Anthapadmanabhan ,  Dusan Suvakovic ,  Hungkei Keith Chow ,  Doutje T. Van Veen

发明人： Nagaraj Prasanth Anthapadmanabhan ,  Dusan Suvakovic ,  Hungkei Keith Chow ,  Doutje T. Van Veen

IPC分类号： H04L25/03 ,  H04L1/00

CPC分类号： H04L25/03866 ,  H04L1/0071

摘要： A manner of processing bit-interleaved data traffic in a communication network. In the increasingly-common scenario where data traffic is bit interleaved and scrambled using a PRBS (pseudo-random binary sequence) before it is transmitted from a sender to a receiver, the receiver is configured to receive the transmitted bit stream and decimate it, that is, remove the bits of the bit stream that are allocated for the receiver, prior to descrambling. To accomplish this, the receiver employs an LFSR (linear feedback shift register) similar or identical to the one used by the sender to scramble the data. The LFSR is initialized by employing helper bits inserted by the sender or an initialization unit, and may employ other techniques for phase adjustment or state skipping depending on the nature of the transmitted bit stream.

公开(公告)号：US08326152B2

公开(公告)日：2012-12-04

申请号：US12760870

申请日：2010-04-15

申请人： Doutje T. Van Veen ,  Adriaan J. De Lind Van Wijngaarden ,  Dusan Suvakovic

发明人： Doutje T. Van Veen ,  Adriaan J. De Lind Van Wijngaarden ,  Dusan Suvakovic

IPC分类号： H04B10/00 ,  H04B10/08 ,  H04J14/00 ,  H04J14/02

CPC分类号： H04J14/02 ,  H04B10/07955 ,  H04J3/1694

摘要： A signal strength corresponding to an incoming optical burst from each of a plurality of optical nodes is measured. The measurements can be performed at system start-up, configuration/installation of the optical nodes and/or at certain intervals of operation of the optical nodes. Signal strength information for the optical nodes based on the measurements is stored in memory. When scheduling the optical nodes for transmission, a preferred transmission order is determined in response to the stored signal strength information. In an embodiment, the preferred order is determined to reduce differences in signal strength levels between consecutive optical bursts.

摘要翻译： 测量与来自多个光学节点中的每一个的输入光脉冲串对应的信号强度。 可以在系统启动，光节点的配置/安装和/或在光节点的特定操作间隔期间进行测量。 基于测量的光节点的信号强度信息被存储在存储器中。 当调度用于传输的光节点时，响应于所存储的信号强度信息来确定优选传输顺序。 在一个实施例中，确定优选顺序以减少连续的光脉冲串之间的信号强度电平的差异。

公开(公告)号：US09459927B2

公开(公告)日：2016-10-04

申请号：US12125315

申请日：2008-05-22

申请人： Martin D. Carroll ,  Hungkei Keith Chow ,  Ilija Hadzic ,  Ronald L. Sharp ,  Theodore Sizer, II ,  Dusan Suvakovic ,  Doutje T. Van Veen

发明人： Martin D. Carroll ,  Hungkei Keith Chow ,  Ilija Hadzic ,  Ronald L. Sharp ,  Theodore Sizer, II ,  Dusan Suvakovic ,  Doutje T. Van Veen

IPC分类号： G06F9/455 ,  G06F9/50 ,  G06F9/48

CPC分类号： G06F9/5077 ,  G06F9/4856

摘要： A virtual personal computer is implemented in a communication system comprising a plurality of central offices each of which communicates with a plurality of client devices over a corresponding access network. A given one of the central offices comprises at least one compute server and at least one storage server. The virtual personal computer is configured by allocating physical processing resources of the compute server and physical storage resources of the storage server to that virtual personal computer. User access is provided to the virtual personal computer via one of the client devices. The virtual personal computer can be dynamically reconfigured by altering the allocation of at least one of the physical processing resources and the physical storage resources to the given virtual personal computer responsive to particular applications selected by the user to run on the given virtual personal computer.

摘要翻译： 在包括多个中心局的通信系统中实现虚拟个人计算机，每个中心局通过相应的接入网络与多个客户端设备进行通信。 给定的一个中心局包括至少一个计算服务器和至少一个存储服务器。 通过将计算服务器的物理处理资源和存储服务器的物理存储资源分配给该虚拟个人计算机来配置虚拟个人计算机。 用户访问通过其中一个客户端设备提供给虚拟个人计算机。 响应于用户选择的在给定的虚拟个人计算机上运行的特定应用，可以通过将物理处理资源和物理存储资源中的至少一个的分配改变到给定的虚拟个人计算机来动态地重新配置虚拟个人计算机。

公开(公告)号：US20140126919A1

公开(公告)日：2014-05-08

申请号：US13853754

申请日：2013-03-29

申请人： Nagaraj Prasanth Anthapadmanabhan ,  Dusan Suvakovic ,  Hungkei Keith Chow ,  Doutje T. Van Veen

发明人： Nagaraj Prasanth Anthapadmanabhan ,  Dusan Suvakovic ,  Hungkei Keith Chow ,  Doutje T. Van Veen

IPC分类号： H04B10/66

CPC分类号： H04L25/03866 ,  H04L1/0071

摘要： A manner of processing bit-interleaved data traffic in a communication network. In the increasingly-common scenario where data traffic is bit interleaved and scrambled using a PRBS (pseudo-random binary sequence) before it is transmitted from a sender to a receiver, the receiver is configured to receive the transmitted bit stream and decimate it, that is, remove the bits of the bit stream that are allocated for the receiver, prior to descrambling. To accomplish this, the receiver employs an LFSR (linear feedback shift register) similar or identical to the one used by the sender to scramble the data. The LFSR is initialized by employing helper bits inserted by the sender or an initialization unit, and may employ other techniques for phase adjustment or state skipping depending on the nature of the transmitted bit stream.

摘要翻译： 在通信网络中处理比特交织的数据业务的方式。 在越来越常见的情况下，在从发送器发送到接收器之前，使用PRBS（伪随机二进制序列）将数据业务进行比特交织和加扰，接收器被配置为接收所发送的比特流并对其进行抽取， 是在解扰之前去除分配给接收机的比特流的比特。 为了实现这一点，接收机采用与发送方使用的LFSR（线性反馈移位寄存器）类似或相同的数据来加扰数据。 通过使用由发送者或初始化单元插入的辅助位来初始化LFSR，并且可以根据发送的比特流的性质使用用于相位调整或状态跳过的其他技术。

公开(公告)号：US20090293055A1

公开(公告)日：2009-11-26

申请号：US12125315

申请日：2008-05-22

申请人： Martin D. Carroll ,  Hungkei Keith Chow ,  Ilija Hadzic ,  Ronald L. Sharp ,  Theodore Sizer, II ,  Dusan Suvakovic ,  Doutje T. Van Veen

发明人： Martin D. Carroll ,  Hungkei Keith Chow ,  Ilija Hadzic ,  Ronald L. Sharp ,  Theodore Sizer, II ,  Dusan Suvakovic ,  Doutje T. Van Veen

IPC分类号： G06F9/455

CPC分类号： G06F9/5077 ,  G06F9/4856

摘要： A virtual personal computer is implemented in a communication system comprising a plurality of central offices each of which communicates with a plurality of client devices over a corresponding access network. A given one of the central offices comprises at least one compute server and at least one storage server. The virtual personal computer is configured by allocating physical processing resources of the compute server and physical storage resources of the storage server to that virtual personal computer. User access is provided to the virtual personal computer via one of the client devices. The virtual personal computer can be dynamically reconfigured by altering the allocation of at least one of the physical processing resources and the physical storage resources to the given virtual personal computer responsive to particular applications selected by the user to run on the given virtual personal computer.

摘要翻译： 在包括多个中心局的通信系统中实现虚拟个人计算机，每个中心局通过相应的接入网络与多个客户端设备进行通信。 给定的一个中心局包括至少一个计算服务器和至少一个存储服务器。 通过将计算服务器的物理处理资源和存储服务器的物理存储资源分配给该虚拟个人计算机来配置虚拟个人计算机。 用户访问通过其中一个客户端设备提供给虚拟个人计算机。 响应于用户选择的在给定的虚拟个人计算机上运行的特定应用，可以通过将物理处理资源和物理存储资源中的至少一个的分配改变到给定的虚拟个人计算机来动态地重新配置虚拟个人计算机。

公开(公告)号：US20160072588A1

公开(公告)日：2016-03-10

申请号：US14844942

申请日：2015-09-03

申请人： Vincent E. Houtsma ,  Doutje T. Van Veen ,  Alan H. Gnauck ,  Patrick Iannone

发明人： Vincent E. Houtsma ,  Doutje T. Van Veen ,  Alan H. Gnauck ,  Patrick Iannone

IPC分类号： H04B10/564 ,  H04B10/27 ,  H04L25/08 ,  H04Q11/00

CPC分类号： H04L25/085 ,  H04B10/2507 ,  H04B10/516 ,  H04J14/0282 ,  H04L25/0272 ,  H04L25/0292

摘要： A method and apparatus for processing a communication signal in an optical network. A network node typically includes a transmit train for generating transmissions and a receive train for receiving transmissions from another network node. The network node may be, for example, an OLT or an ONU. In a receiver implementing the described solution, a photodiode is employed to convert received optical signals into electrical signals that are then provided to a TIA or other device for producing a differential output having an inverted output and a non-inverted output. One of the outputs is delayed one bit and attenuated, then combined with the other output to produce an equalized signal for further processing by the receive train. The solution may be analogously applied on the transmit side for introducing pre-distortion, either in addition to or in lieu of in the receiver.

摘要翻译： 一种用于处理光网络中的通信信号的方法和装置。 网络节点通常包括用于生成传输的传输列，以及用于从另一网络节点接收传输的接收列。 网络节点可以是例如OLT或ONU。 在实现所述解决方案的接收机中，采用光电二极管将接收到的光信号转换成电信号，然后将其提供给TIA或其他设备，以产生具有反相输出和非反相输出的差分输出。 其中一个输出被延迟一位并衰减，然后与另一个输出相结合，以产生均衡信号，以便接收列进一步处理。 该解决方案可以类似地应用于发射侧，用于引入预失真，或者在接收机中或代替接收机中。

公开(公告)号：US09225425B2

公开(公告)日：2015-12-29

申请号：US12074692

申请日：2008-03-05

申请人： Andrew Larry Adamiecki ,  Ilija Hadzic ,  Doutje T. Van Veen ,  Peter J. Winzer

发明人： Andrew Larry Adamiecki ,  Ilija Hadzic ,  Doutje T. Van Veen ,  Peter J. Winzer

IPC分类号： H04B10/272 ,  H04L25/06 ,  H04Q11/00 ,  H04J3/22

CPC分类号： H04B10/272 ,  H04J3/22 ,  H04L25/062 ,  H04Q11/0067

摘要： In a dual speed passive optical network, an optical line termination (OLT) transmits a communication signal having a 10-Gb/s partition and a 2.5-Gb/s partition. The 10-Gb/s partition includes a 10 G data signal and a 2.5 G clock signal so that the PLL of a 2.5 G (legacy) optical network termination (ONT) can remain locked while a 10 G ONT is receiving data. The 2.5 G clock signal includes 1-bit spike signals of greater amplitude than the 10 G data signal.