Spectrally flexible band plans with reduced filtering requirements
    1.
    发明申请
    Spectrally flexible band plans with reduced filtering requirements 有权
    光谱灵活的频段计划,降低了滤波要求

    公开(公告)号:US20050232540A1

    公开(公告)日:2005-10-20

    申请号:US11070476

    申请日:2005-03-02

    IPC分类号: G02B6/34 H04B3/56 H04M9/00

    摘要: The present invention provides, in one embodiment, a method of simplifying filtering with respect to a band plan. The method includes selecting a reflection point relative to the band plan and designating subchannels as unusable within a filterable separation of the reflection point that would otherwise introduce an asymmetry within the filterable separation. The present invention also provides a filtering simplifier for use with a DSL system having a band plan. The filtering simplifier includes a reflection point selector configured to select a reflection point relative to the band plan. The filtering simplifier also includes a subchannel designator coupled to the reflection point selector and configured to designate subchannels as unusable within a filterable separation of the reflection point that would otherwise introduce an asymmetry within the filterable separation.

    摘要翻译: 在一个实施例中,本发明提供了一种简化相对于频带规划的滤波的方法。 该方法包括选择相对于频带规划的反射点,并将反射点指定为在反射点的可过滤分离内不可用,否则将在可滤波分离内引入不对称性。 本发明还提供了一种与具有频带规划的DSL系统一起使用的滤波简化器。 滤波简化器包括被配置为选择相对于频带规划的反射点的反射点选择器。 滤波简化器还包括耦合到反射点选择器并被配置为将子信道指定为在反射点的可滤波分离中不可用的子信道指示符,否则将在可滤波分离内引入不对称性。

    POWER FACTOR AND LINE DISTORTION METHOD AND APPARATUS
    4.
    发明申请
    POWER FACTOR AND LINE DISTORTION METHOD AND APPARATUS 审中-公开
    功率因数和线性失真方法和装置

    公开(公告)号:US20120106211A1

    公开(公告)日:2012-05-03

    申请号:US12938958

    申请日:2010-11-03

    IPC分类号: H02M1/12

    摘要: Today, power distribution systems can be used to supply power to many loads, and since many loads, such as servers, are reactive (i.e., have capacitors and/or inductors), line distortion and power factor can be an issue. Conventional techniques to correct for line distortion and power factor use a specialized circuit that is generally in series with the load, but these specialized circuits can be prohibitively expensive when used in large numbers. Here, however, a corrective power supply has been provided, which can correct for other parallel power supplies that can reduce cost.

    摘要翻译: 今天,配电系统可以用于向许多负载供电,并且由于诸如服务器的许多负载是无功的(即,具有电容器和/或电感器),所以线路失真和功率因数可能是一个问题。 用于校正线路失真和功率因数的常规技术使用通常与负载串联的专用电路,但是当大量使用时,这些专用电路可能是非常昂贵的。 然而,这里提供了一种校正电源,可以校正可以降低成本的其他并联电源。

    JOINT TRANSMIT AND RECEIVE I/Q IMBALANCE COMPENSATION
    5.
    发明申请
    JOINT TRANSMIT AND RECEIVE I/Q IMBALANCE COMPENSATION 有权
    联合发送和接收I / Q不平等补偿

    公开(公告)号:US20110158297A1

    公开(公告)日:2011-06-30

    申请号:US12648898

    申请日:2009-12-29

    IPC分类号: H04B1/38

    CPC分类号: H04B1/40 H03D3/009

    摘要: Conventional transceivers do provide some compensation for in-phase/quadrature (I/Q) imbalance. However, these techniques do not separately compensate for I/Q imbalance for the transmitter and receiver sides of the transceiver. Here, a transceiver is provided that allows for compensation of I/Q imbalance in the transmitter and receiver irrespective of the other to allow for a more accurate transceiver.

    摘要翻译: 传统的收发器确实为同相/正交(I / Q)不平衡提供了一些补偿。 然而,这些技术不会单独地补偿收发器的发射机和接收机侧的I / Q不平衡。 这里,提供了一种收发器,其允许补偿发射机和接收机中的I / Q不平衡,而不管另一个是允许更准确的收发机。

    Configurable equalization apparatus for multicarrier communications
    6.
    发明申请
    Configurable equalization apparatus for multicarrier communications 有权
    用于多载波通信的可配置均衡装置

    公开(公告)号:US20050084005A1

    公开(公告)日:2005-04-21

    申请号:US10251733

    申请日:2002-09-20

    IPC分类号: H03H7/30 H04L25/03

    摘要: A number of basic equalization and demodulation structures have been shown to be appropriate for DMT systems depending on the channel, noise, and system parameters. These include single path, dual path, oversampled, and double rate structures. Using the fundamental computation units of two TEQs (FIR filters) and two FFTs, in conjunction with simple delays, downsampling and routing, single path, dual path, oversampled and double rate equalization structures can be realized from a common equalization structure.

    摘要翻译: 根据信道,噪声和系统参数,已经显示出许多基本的均衡和解调结构适用于DMT系统。 这些包括单路径,双路径,过采样和双速率结构。 使用两个TEQ(FIR滤波器)和两个FFT的基本计算单元,结合简单的延迟,下采样和路由,可以从公共均衡结构实现单路径,双路径,过采样和双速率均衡结构。

    Joint transmit and receive I/Q imbalance compensation
    7.
    发明授权
    Joint transmit and receive I/Q imbalance compensation 有权
    联合发送和接收I / Q不平衡补偿

    公开(公告)号:US08311083B2

    公开(公告)日:2012-11-13

    申请号:US12648898

    申请日:2009-12-29

    IPC分类号: H04L5/16

    CPC分类号: H04B1/40 H03D3/009

    摘要: Conventional transceivers do provide some compensation for in-phase/quadrature (I/Q) imbalance. However, these techniques do not separately compensate for I/Q imbalance for the transmitter and receiver sides of the transceiver. Here, a transceiver is provided that allows for compensation of I/Q imbalance in the transmitter and receiver irrespective of the other to allow for a more accurate transceiver.

    摘要翻译: 传统的收发器确实为同相/正交(I / Q)不平衡提供了一些补偿。 然而,这些技术不会单独地补偿收发器的发射机和接收机侧的I / Q不平衡。 这里,提供了一种收发器,其允许补偿发射机和接收机中的I / Q不平衡,而不管另一个是允许更准确的收发机。