公开(公告)号：US20050030884A1

公开(公告)日：2005-02-10

申请号：US10911915

申请日：2004-08-05

申请人： Andrew Kim ,  Michael Vrazel ,  Sanjay Bajekal ,  Charles Summers

发明人： Andrew Kim ,  Michael Vrazel ,  Sanjay Bajekal ,  Charles Summers

IPC分类号： H04B3/23 ,  H04B3/32 ,  H04J1/12 ,  H04J3/10 ,  H04J99/00 ,  H04R5/00 ,  H04J15/00

CPC分类号： H04B3/23 ,  H04B3/238 ,  H04B3/32 ,  H04J1/12

摘要： Signals propagating in one communication channel can generate crosstalk interference in another communication channel. A crosstalk cancellation device can process the signals causing the crosstalk interference and generate a crosstalk cancellation signal that can compensate for the crosstalk when applied to the channel receiving crosstalk interference. The crosstalk cancellation device can include a model of the crosstalk effect that generates a signal emulating the actual crosstalk both in form an in timing. The crosstalk cancellation device can include a controller that monitors crosstalk-compensated communication signals and adjusts the model to enhance crosstalk cancellation performance. The crosstalk cancellation device can have a mode of self configuration or calibration in which defined test signals can be transmitted on the crosstalk-generating channel and the crosstalk-receiving channel.

摘要翻译： 在一个通信信道中传播的信号可以在另一个通信信道中产生串扰干扰。 串扰消除装置可以处理引起串扰干扰的信号，并产生串扰抵消信号，该信号可以在应用于信道接收串扰干扰时补偿串扰。 串扰消除装置可以包括串联效应的模型，其产生模拟实际串扰的信号，两者都在时间上形成。 串扰消除装置可以包括监视串扰补偿的通信信号并调整模型以增强串扰消除性能的控制器。 串扰消除装置可以具有自配置或校准的模式，其中定义的测试信号可以在串扰产生信道和串扰接收信道上传输。

公开(公告)号：US20070064923A1

公开(公告)日：2007-03-22

申请号：US11509112

申请日：2006-08-23

申请人： Bruce Schmukler ,  Arvind Raghavan ,  Ziba Nami ,  Jyothi Peddi ,  Andrew Kim ,  Michael Vrazel ,  Charles Summers

发明人： Bruce Schmukler ,  Arvind Raghavan ,  Ziba Nami ,  Jyothi Peddi ,  Andrew Kim ,  Michael Vrazel ,  Charles Summers

IPC分类号： H04M9/08

CPC分类号： H03H11/265 ,  H03H15/00 ,  H03H2015/007 ,  H04B3/23 ,  H04B3/238 ,  H04B3/32 ,  H04J1/12

摘要： A circuit can process a sample of a signal to emulate, simulate, or model an effect on the signal. Thus, an emulation circuit can produce a representation of a real-world signal transformation by processing the signal according to one or more signal processing parameters that are characteristic of the real-world signal transformation. The emulation circuit can apply analog signal processing and/or mixed signal processing to the signal. The signal processing can comprise feeding the signal through two signal paths, each having a different delay, and creating a weighted sum of the outputs of the two signal paths. The signal processing can also (or alternatively) comprise routing the signal through a network of delay elements, wherein a bank of switching or routing elements determines the route and thus the resulting delay.

摘要翻译： 电路可以处理信号的样本以对信号进行仿真，模拟或建模。 因此，仿真电路可以通过根据作为真实世界信号变换的特征的一个或多个信号处理参数处理信号来产生现实世界信号变换的表示。 仿真电路可以对信号应用模拟信号处理和/或混合信号处理。 信号处理可以包括通过两个信号路径馈送信号，每个信号路径具有不同的延迟，并且产生两个信号路径的输出的加权和。 信号处理还可以（或者可选地）包括通过延迟元件的网络路由信号，其中一组交换或路由元件确定路由并且因此确定所得到的延迟。

公开(公告)号：US20070060059A1

公开(公告)日：2007-03-15

申请号：US11450543

申请日：2006-06-09

申请人： Andrew Kim ,  Edward Gebara ,  Bruce Schmukler ,  Mark Dickmann ,  Michael Farrell ,  Michael Vrazel ,  David Stelliga ,  Joy Laskar ,  Charles Summers

发明人： Andrew Kim ,  Edward Gebara ,  Bruce Schmukler ,  Mark Dickmann ,  Michael Farrell ,  Michael Vrazel ,  David Stelliga ,  Joy Laskar ,  Charles Summers

IPC分类号： H04B1/00 ,  H04B15/00

CPC分类号： H04B1/7103 ,  H04B1/123

摘要： Signals propagating on an aggressor communication channel can cause detrimental interference in a victim communication channel. A signal processing circuit can generate an interference cancellation signal that, when applied to the victim communication channel, cancels the detrimental interference. The signal processing circuit can dynamically adjust or update two or more aspects of the interference cancellation signal, such as an amplitude or gain parameter and a phase or delay parameter. Via the dynamic adjustments, the signal processing circuit can adapt to changing conditions, thereby maintaining an acceptable level of interference cancellation in a fluctuating operating environment. A control circuit that implements the parametric adjustments can have at least two modes of operation, one for adjusting the amplitude parameter and one for adjusting the phase parameter. The modes can be selectable or can be intermittently available, for example.

摘要翻译： 在侵略者通信信道上传播的信号可能对受害者通信信道造成有害的干扰。 信号处理电路可以产生干扰消除信号，当被施加到受害通信信道时，消除有害干扰。 信号处理电路可以动态地调整或更新干扰消除信号的两个或多个方面，例如振幅或增益参数以及相位或延迟参数。 通过动态调整，信号处理电路可以适应变化的条件，从而在波动的操作环境中保持可接受的干扰消除水平。 实现参数调整的控制电路可以具有至少两种操作模式，一种用于调整幅度参数，一种用于调整相位参数。 这些模式可以是可选择的，或者可以间歇地可用。

公开(公告)号：US20070222654A1

公开(公告)日：2007-09-27

申请号：US11599835

申请日：2006-11-15

申请人： Michael Vrazel ,  Stephen Ralph ,  Joy Laskar ,  Sungyong Jung ,  Vincent Hietala ,  Edward Gebara

发明人： Michael Vrazel ,  Stephen Ralph ,  Joy Laskar ,  Sungyong Jung ,  Vincent Hietala ,  Edward Gebara

IPC分类号： H03M1/66

CPC分类号： H03M1/1265 ,  H03M1/08 ,  H03M1/123 ,  H03M1/745 ,  H04B10/516

摘要： Data throughput rates are increased in an optical fiber communication system without requiring replacement of the existing optical fiber in a link. Channel throughput is increased by upgrading the components and circuitry in the head and terminal of an optical fiber communication system link. Aggregate throughput in a fiber optic link is increased beyond the range of conventional Wavelength Division Multiplexed (WDM) upgrades, while precluding the necessity of replacing existing fiber plants. The increase in system throughput is achieved by using advanced modulation techniques to encode greater amounts of data into the transmitted spectrum of a channel, thereby increasing the spectral efficiency of each channel. This novel method of increasing transmission capacity by upgrading the head and terminal of the system to achieve greater spectral efficiency and hence throughput, alleviates the need to replace existing fiber plants. Spectrally efficient complex modulation techniques can be supported by interface circuits with an increased level of signal processing capability in order to both encode multiple bits into a transmitted symbol and decode the original data from the received symbols.

摘要翻译： 数据吞吐率在光纤通信系统中增加，而不需要更换链路中现有的光纤。 通过升级光纤通信系统链路的头端和终端中的组件和电路来增加信道吞吐量。 光纤链路中的总吞吐量增加超出常规波分复用（WDM）升级的范围，同时排除了替换现有光纤设备的必要性。 系统吞吐量的增加通过使用先进的调制技术将更大量的数据编码到信道的传输频谱中，从而提高每个信道的频谱效率来实现。 这种通过升级系统的头部和终端来提高传输容量以实现更高的频谱效率和因此的吞吐量的这种新颖的方法减轻了替换现有的光纤设备的需要。 频谱效率高的复调制技术可以由具有增加的信号处理能力水平的接口电路来支持，以便将多个比特编码到发射符号中并且从接收的符号解码原始数据。

公开(公告)号：US20060159002A1

公开(公告)日：2006-07-20

申请号：US11334864

申请日：2006-01-19

申请人： Andrew Kim ,  Michael Vrazel ,  Sanjay Bajekal ,  Charles Summers

发明人： Andrew Kim ,  Michael Vrazel ,  Sanjay Bajekal ,  Charles Summers

IPC分类号： H04J3/10

CPC分类号： H04B3/23 ,  H04B3/238 ,  H04B3/32 ,  H04J1/12

摘要： Signals propagating in one communication channel can generate crosstalk interference in another communication channel. A crosstalk cancellation device can process the signals causing the crosstalk interference and generate a crosstalk cancellation signal that can compensate for the crosstalk when applied to the channel receiving crosstalk interference. The crosstalk cancellation device can include a model of the crosstalk effect that generates a signal emulating the actual crosstalk both in form an in timing. The crosstalk cancellation device can include a controller that monitors crosstalk-compensated communication signals and adjusts the model to enhance crosstalk cancellation performance. The crosstalk cancellation device can have a mode of self configuration or calibration in which defined test signals can be transmitted on the crosstalk-generating channel and the crosstalk-receiving channel.

公开(公告)号：US20070092265A1

公开(公告)日：2007-04-26

申请号：US11543693

申请日：2006-10-05

申请人： Michael Vrazel ,  Stephen Ralph ,  Vincent Hietala

发明人： Michael Vrazel ,  Stephen Ralph ,  Vincent Hietala

IPC分类号： H04B10/04

CPC分类号： H04L25/4917 ,  H04B10/5161 ,  H04B10/524 ,  H04B10/541 ,  H04L25/4902

摘要： Decreasing the average transmitted power in an optical fiber communication channel using multilevel amplitude modulation in conjunction with Pulse Position Modulation (PPM). This multilevel PPM method does not entail any tradeoff between decreased power per channel and channel bandwidth, enabling a lower average transmitted power compared to On/Off Keying (OOK) with no reduction in aggregate data rate. Therefore, multilevel PPM can be used in high-speed Dense Wavelength Division Multiplexed (DWDM) systems where the maximum number of channels is traditionally limited by nonlinear effects such as self-phase modulation (SPM), cross-phase modulation (XPM), four-wave mixing (FWM), stimulated Brillouin scattering (SBS), and stimulated Raman scattering (SRS). This modulation technique can enable an increased number of channels in DWDM systems, thereby increasing aggregate data rates within those systems.

摘要翻译： 结合脉冲位置调制（PPM），降低使用多电平幅度调制的光纤通信信道中的平均发射功率。 这种多级PPM方法不需要在每个通道的功率减少与通道带宽之间进行权衡，与开/关键控（OOK）相比，能够实现较低的平均传输功率，而不会降低总体数据速率。 因此，多电平PPM可用于高速密集波分复用（DWDM）系统，其中最大通道数传统上受非线性影响的限制，如自相位调制（SPM），交叉相位调制（XPM），四 波混频（FWM），受激布里渊散射（SBS）和受激拉曼散射（SRS）。 这种调制技术可以实现DWDM系统中增加的信道数量，从而提高这些系统内的总体数据速率。