公开(公告)号：US20120014487A1

公开(公告)日：2012-01-19

申请号：US12952184

申请日：2010-11-22

Applicant: Dariush Dabiri ,  Maged F. Barsoum

Inventor： Dariush Dabiri ,  Maged F. Barsoum

IPC: H04B1/10

CPC classification number: H03H21/0021 ,  H03H21/0012

Abstract: An input signal that includes narrowband interference is spectrally enhanced by an adaptive circuit that supplies as output signal(s), portion(s) of NBI at one or more frequencies that change adaptively. The output signal(s) are used in one or more tone predictor(s) to generate, based on prior values of the NBI portion, one or more predicted tone signals that are subtracted from a received signal containing the NBI, and the result is used in the normal manner, e.g. decoded. The adaptive circuit and the one or more tone predictor(s), form a feed-forward NBI predictor wherein the received signal is supplied as the input signal of the adaptive circuit. The result of subtraction may be supplied to a slicer that slices the result, yielding a sliced signal which is subtracted from the received signal to generate a signal can be used as the input signal, to implement a feedback NBI predictor.

Abstract translation: 包括窄带干扰的输入信号由自适应电路进行光谱增强，该自适应电路以自适应变化的一个或多个频率提供NBI的一部分或多个输出信号。 在一个或多个音调预测器中使用输出信号以根据NBI部分的先前值生成从包含NBI的接收信号中减去的一个或多个预测音调信号，并且结果是 以正常方式使用，例如 解码。 自适应电路和一个或多个音调预测器形成前馈NBI预测器，其中接收信号作为自适应电路的输入信号提供。 减法的结果可以被提供给分片器的分片器，产生从接收信号中减去生成信号的分片信号可以用作输入信号，以实现反馈NBI预测器。

公开(公告)号：US20120014416A1

公开(公告)日：2012-01-19

申请号：US12952150

申请日：2010-11-22

Applicant: Dariush Dabiri

Inventor： Dariush Dabiri

IPC: H04B1/707

CPC classification number: H03H21/0021 ,  H03H21/0012

Abstract: A narrowband interference (NBI) canceller is coupled to an A/D converter to receive an input signal and supply an NBI-canceled signal to an error correcting decoder. In the NBI canceller, a first arithmetic unit receives the input signal and a predicted-interference signal, and supplies a difference thereof as the interference-canceled signal. A slicer receives the interference-canceled signal and supplies a decision signal. A second arithmetic unit subtracts the decision signal from the input signal to generate a noise signal. A coarse frequency estimator receives the noise signal and analyzes the frequency spectrum to generate a coarse estimate of a fundamental frequency of the NBI. The coarse estimate is used by an adaptive narrowband interference predictor to generate the predicted-interference signal while adaptively tracking the narrowband interference. Use of the NBI canceller in a transceiver can eliminate link drop caused by operation of wireless devices that generate EMI in a cable.

Abstract translation: 窄带干扰（NBI）消除器耦合到A / D转换器以接收输入信号，并向纠错解码器提供NBI消除的信号。 在NBI消除器中，第一算术单元接收输入信号和预测干扰信号，并将其差作为干扰消除信号。 切片器接收干扰消除信号并提供判决信号。 第二算术单元从输入信号中减去判定信号以产生噪声信号。 粗略频率估计器接收噪声信号并分析频谱以产生NBI的基频的粗略估计。 自适应窄带干扰预测器使用粗略估计来产生预测干扰信号，同时自适应地跟踪窄带干扰。 在收发器中使用NBI消除器可以消除在电缆中产生EMI的无线设备的操作造成的链路丢失。

公开(公告)号：US20120013398A1

公开(公告)日：2012-01-19

申请号：US12952178

申请日：2010-11-22

Applicant: Dariush Dabiri ,  Maged F. Barsoum

Inventor： Dariush Dabiri ,  Maged F. Barsoum

IPC: H03K5/1252

CPC classification number: H03H21/0021 ,  H03H21/0012

Abstract: A circuit and method perform adaptive spectral enhancement at a frequency ω1 (also called “fundamental” frequency) on an input signal y which includes electromagnetic interference (EMI) at an unknown frequency, to generate a fundamental-enhanced signal φ1 (or its complement). The fundamental-enhanced signal φ1 (or complement) is thereafter used in a notching circuit (also called “fundamental notching” circuit) to generate a fundamental-notched signal y−φ1. The fundamental-notched signal y−φ1 is itself enhanced to generate a harmonic-enhanced signal φ2 that is used to notch the fundamental-notched signal y−φ1 again, in one or more additional notching circuits that are connected in series with the fundamental notching circuit. The result (“cascaded-harmonic-notched” signal) is relatively free of EMI noise (fundamental and harmonics), and is used as an error signal for an adaptation circuit that in turn identifies the fundamental frequency ω1. Use of a cascaded-harmonic-notched signal as the error signal improves speed of convergence of adaptation.

Abstract translation: 电路和方法在包括未知频率的电磁干扰（EMI）的输入信号y上对频率ω1（也称为“基本”频率）执行自适应频谱增强，以产生基本增强信号＆phgr; 1（或其 补充）。 1，然后在切口电路（也称为“基本陷波”电路）中使用基本增强的信号＆amp; 1（或补码）以产生基本缺口信号y-＆phgr; 1。 基本缺陷信号y-＆phgr; 1本身被增强以产生用于在连接的一个或多个附加的开槽电路中再次陷入基本缺口信号y-＆phgr 1的谐波增强信号 与基本的开槽电路串联。 结果（“级联谐波陷波”信号）相对没有EMI噪声（基波和谐波），并被用作自适应电路的误差信号，自适应电路进而识别基频ω1。 使用级联谐波陷波信号作为误差信号提高适应性收敛速度。

公开(公告)号：US08059774B2

公开(公告)日：2011-11-15

申请号：US12129477

申请日：2008-05-29

Applicant: Shyang Kye Kong ,  Simon Pang ,  Philip Michael Clovis

Inventor： Shyang Kye Kong ,  Simon Pang ,  Philip Michael Clovis

IPC: H04L7/00

CPC classification number: H04L7/0004 ,  H03L7/095 ,  H03L7/113 ,  H04L7/033

Abstract: A system and method are provided for detecting the frequency acquisition of a synthesized signal in a non-synchronous communications receiver. The method accepts a non-synchronous communication signal having an input data signaling frequency, and compares the input data signaling frequency to a synthesized signal frequency. In response to the comparing, a difference signal pulse is generated. More explicitly, the difference signal is generated at a rate responsive to the difference between the input data signaling frequency and the synthesized signal frequency. The method counts synthesized signal pulses occurring simultaneously with the difference signal pulse. If the counted synthesized signal pulses exceed a threshold (before the disappearance of the difference signal pulse), it is determined that the input data signaling frequency is about equal to the synthesized signal frequency, and a lock signal is generated.

Abstract translation: 提供一种用于检测非同步通信接收机中的合成信号的频率获取的系统和方法。 该方法接受具有输入数据信令频率的非同步通信信号，并将输入数据信令频率与合成信号频率进行比较。 响应于比较，产生差分信号脉冲。 更明确地说，差分信号以响应于输入数据信号频率和合成信号频率之差的速率产生。 该方法对与差分信号脉冲同时出现的合成信号脉冲进行计数。 如果计数的合成信号脉冲超过阈值（在差信号脉冲消失之前），则确定输入数据信令频率大约等于合成信号频率，并产生锁定信号。

公开(公告)号：US08059705B2

公开(公告)日：2011-11-15

申请号：US11707801

申请日：2007-02-16

Applicant: Julian Uribe ,  Wei Fu

Inventor： Julian Uribe ,  Wei Fu

IPC: H03H7/30 ,  H04L27/00 ,  H04L27/08 ,  H04B1/10

CPC classification number: H04L25/03038 ,  H04L25/03159 ,  H04L25/03885 ,  H04L2025/03445 ,  H04L2025/03522

Abstract: A system and method are provided for channel equalization using a combination of frequency and phase compensation. The method receives a serial data stream input, and parallel processes the data stream input through a first and second path. The first path has a first frequency response, and the second path has a second frequency response, higher than the first frequency response. Signals are combined from the first and second paths, creating a frequency compensated signal. Then, the frequency compensated signal is parallel processed through a third path having a first time delay, and a fourth path having a fourth time delay, greater than the third time delay. The signals from the third and fourth paths are combined, created a phase compensated signal. In one aspect, the phase compensated signal is amplified, creating a voltage limited output signal.

Abstract translation: 提供了一种使用频率和相位补偿组合的信道均衡的系统和方法。 该方法接收串行数据流输入，并且并行处理通过第一和第二路径输入的数据流。 第一路径具有第一频率响应，并且第二路径具有高于第一频率响应的第二频率响应。 信号从第一和第二路径组合，产生频率补偿信号。 然后，频率补偿信号通过具有第一时间延迟的第三路径和具有大于第三时间延迟的第四时间延迟的第四路径并行处理。 来自第三和第四路径的信号被组合，产生相位补偿信号。 在一个方面，相位补偿信号被放大，产生电压限制输出信号。

公开(公告)号：US08051205B2

公开(公告)日：2011-11-01

申请号：US12250453

申请日：2008-10-13

Applicant: Subhash Chandra Roy ,  Vinay Ravuri ,  Parameswaran Gopi

Inventor： Subhash Chandra Roy ,  Vinay Ravuri ,  Parameswaran Gopi

IPC: G06F15/173

CPC classification number: G06F15/16 ,  G06F17/30206

Abstract: A system and method are provided for peer-to-peer distributed file storage in a network of connected clients. The method transmits data file peer-storage information from a first peer node to a network-connected backup manager. The backup manager creates a mapping plan, for mapping data file segments to a peer group, which typically includes a plurality of network-connected peer nodes. The backup manager transmits the mapping plan to the first peer node. The first peer node distributes the data file segments to the peer group in accordance with the mapping plan, for storage in tangible memory media. Typically, the first peer node accepts a data file and encrypts the data file. In one aspect, the backup manager creates a mapping plan for distributing (n+x) erasure-coded segments. After receipt of the mapping plan, the first peer node creates the (n+x) erasure coded file segments in preparation for distribution.

Abstract translation: 提供了一种系统和方法，用于在连接的客户端的网络中进行对等分布式文件存储。 该方法将数据文件对等体存储信息从第一对等节点传送到网络连接的备份管理器。 备份管理器创建映射计划，用于将数据文件段映射到对等体组，对等体组通常包括多个网络连接的对等节点。 备份管理器将映射计划发送到第一个对等节点。 第一个对等节点根据映射计划将数据文件段分发到对等体组，以存储在有形存储介质中。 通常，第一对等节点接受数据文件并加密数据文件。 在一方面，备份管理器创建用于分发（n + x）个擦除编码的段的映射计划。 在接收到映射计划之后，第一对等节点创建准备分发的（n + x）个擦除编码文件段。

公开(公告)号：US08050567B2

公开(公告)日：2011-11-01

申请号：US12210156

申请日：2008-09-12

Applicant: Glen Miller ,  Tracy Xiaoming Ma

Inventor： Glen Miller ,  Tracy Xiaoming Ma

IPC: H04J14/08

CPC classification number: H04J3/1652 ,  H04J2203/0089

Abstract: System and methods are provided, in an Optical Transport Network (OTN), for communicating asynchronous Tributary Slots (TSs) via a synchronous Optical Payload Transport Unit of level k (OTUk) interface. The transmission method accepts a plurality of TSs at a corresponding plurality of asynchronous data rates. The TSs are mapped, using a tangible memory medium, into pseudo-Optical channel Data Tributary Unit (ODTU) frames synchronized to a common clock. Then, the synchronized pseudo-ODTU frames can be interleaved into an OTUk frame, without the need of a phase-locked loop (PLL) or buffering.

Abstract translation: 在光传输网络（OTN）中提供了用于通过级别k（OTUk）接口的同步光负载传输单元来传送异步支路时隙（TS）的系统和方法。 传输方法以相应的多个异步数据速率接收多个TS。 使用有形存储介质将TS映射到与公共时钟同步的伪光信道数据支路单元（ODTU）帧。 然后，同步的伪ODTU帧可以交织到OTUk帧中，而不需要锁相环（PLL）或缓冲。

公开(公告)号：US08005370B2

公开(公告)日：2011-08-23

申请号：US12332233

申请日：2008-12-10

Applicant: Ronald Edward Perez

Inventor： Ronald Edward Perez

IPC: H04B10/00

CPC classification number: H04B10/69 ,  H04B10/40 ,  H04L7/033 ,  H04L2027/0073

Abstract: A system and method are provided for determining an optical signal frequency range in an optical/electrical transceiver. The method receives an optical receive signal having a non-predetermined data rate via a network interface, and also receives an electrical reference clock signal having a non-predetermined frequency via a framer interface. The reference clock signal frequency is cross-referenced to an optical receive signal frequency. In one aspect a clock and data recovery (CDR) voltage controlled oscillator (VCO) is selected having an output frequency matching the cross-referenced optical receive signal frequency. The optical receive signal is converted to an electrical receive signal. Initially, the VCO is frequency-locked to the reference clock. Subsequent to frequency-locking the VCO output frequency, the converted optical signal is phase-locked, generating a receive data clock. The CDR supplies a converted optical receive signal and receive data clock to the framer interface.

Abstract translation: 提供了一种用于确定光/电收发器中的光信号频率范围的系统和方法。 该方法经由网络接口​​接收具有非预定数据速率的光接收信号，并且还经由成帧器接口接收具有非预定频率的电参考时钟信号。 参考时钟信号频率与光接收信号频率交叉参考。 在一个方面，选择具有与交叉参考的光接收信号频率匹配的输出频率的时钟和数据恢复（CDR）压控振荡器（VCO）。 光接收信号被转换成电接收信号。 最初，VCO被锁定到参考时钟。 在对VCO输出频率进行频率锁定之后，转换的光信号被锁相，产生接收数据时钟。 CDR提供转换的光接收信号，并将数据时钟接收到成帧器接口。

公开(公告)号：US07895481B1

公开(公告)日：2011-02-22

申请号：US12766890

申请日：2010-04-25

Applicant: Omer Fatih Acikel ,  Warm Shaw Yuan ,  Alan Michael Sorgi

Inventor： Omer Fatih Acikel ,  Warm Shaw Yuan ,  Alan Michael Sorgi

IPC: H03M13/00

CPC classification number: H04L25/06 ,  H04L1/004 ,  H04L25/03006 ,  H04L25/4923

Abstract: A system and method are provided for non-causal channel equalization in a communications system. The method comprises: establishing three thresholds; receiving a binary serial data stream; comparing the first bit estimate in the data stream to a second bit value received prior to the first bit; comparing the first bit estimate to a third bit value received subsequent to the first bit; data stream inputs below the first threshold and above the third threshold are a “0” if both the second and third bits are “1” values, and as a “1” if either of the second and third values is a “1”; data stream inputs above the second threshold and below the third threshold are a “1” if both the second and third bits are a “0” value, and as a “0” if either of the second and third values is a “0”.

Abstract translation: 在通信系统中提供用于非因果信道均衡的系统和方法。 该方法包括：建立三个阈值; 接收二进制串行数据流; 将数据流中的第一比特估计与在第一比特之前接收的第二比特值进行比较; 将所述第一比特估计与所述第一比特之后接收的第三比特值进行比较; 如果第二和第三位均为“1”，则低于第一阈值且高于第三阈值的数据流输入为“0”，如果第二和第三值中的任一个为“1”，则为“1” 如果第二和第三位均为“0”，则高于第二阈值且低于第三阈值的数据流输入为“1”，如果第二和第三位中的任一个为“0”，则为“0” 。

公开(公告)号：US07839839B2

公开(公告)日：2010-11-23

申请号：US12250475

申请日：2008-10-13

Applicant: Matthew Brown ,  Dimitrios Giannakopoulos ,  Jim Lew ,  Michael John Hellmer

Inventor： Matthew Brown ,  Dimitrios Giannakopoulos ,  Jim Lew ,  Michael John Hellmer

IPC: H04J3/06

CPC classification number: H04L1/0071 ,  H04L25/14

Abstract: A system and method are provided for deinterleaving differential inverse multiplexed (DIM) virtual channels in a 40G Ethernet receiver. The method accepts a 10.3125 gigabits per second (Gbps) (10G) Ethernet virtual channel with 64B/86B blocks, including periodic Lane Alignment Marker (LAM) blocks. The 10G virtual channel is deinterleaved into two 5.15625 Gbps (5G) virtual channels by: 1) deinterleaving consecutive blocks from the 10G virtual channel into the 5G virtual channels in an alternating order, and 2) reversing the order of deinterleaving in response to each detected LAM block. Then, the method supplies the 5G virtual channels (i.e. to a MAC module).

Abstract translation: 提供了一种用于在40G以太网接收机中对差分逆多路复用（DIM）虚拟信道进行解交织的系统和方法。 该方法接收具有64B / 86B块的每秒10.3125吉比特（Gbps）（10G）以太网虚拟通道，包括周期性车道对准标记（LAM）块。 10G虚拟信道通过以下方式被解交错成两个5.15625Gbps（5G）虚拟信道：1）以10交替的顺序将10G虚拟信道中的连续块解交织成5G虚拟信道，以及2）响应于每个检测到的逆交换顺序 LAM块。 然后，该方法提供5G虚拟信道（即，向MAC模块）。