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    Platform noise mitigation
    1.
    发明授权
    Platform noise mitigation 有权
    平台噪音减轻

    公开(公告)号：US08085859B2

    公开(公告)日：2011-12-27

    申请号：US11904813

    申请日：2007-09-28

    申请人： Yongfang Guo ,  Lei Shao ,  Ernest T. Tsui ,  Bernard Arambepola ,  Thushara Hewavithana ,  Xintian D. Lin

    发明人： Yongfang Guo ,  Lei Shao ,  Ernest T. Tsui ,  Bernard Arambepola ,  Thushara Hewavithana ,  Xintian D. Lin

    IPC分类号： H04K1/10 ,  H04L23/02

    CPC分类号： H04L25/0242 ,  H04L27/2655 ,  H04L27/2659 ,  H04L27/266 ,  H04L27/2663 ,  H04L27/2665

    摘要： In one embodiment of the invention, a Fourier transform unit converts unsynchronized data received through multiple antennas to a frequency domain. Also, a spectrum estimation unit determines a power spectrum for the unsynchronized data. A notch filter removes data within a frequency band from additional unsynchronized data based on the power spectrum. A synchronization unit synchronizes the notch filtered data and a noise estimation unit determines a noise covariance matrix between the synchronized data received from multiple antennas. In addition, an equalization unit performs channel equalization on the synchronized data based on the noise covariance matrix.

    摘要翻译： 在本发明的一个实施例中，傅里叶变换单元将通过多个天线接收的非同步数据转换为频域。 此外，频谱估计单元确定用于非同步数据的功率谱。 陷波滤波器基于功率谱从附加的非同步数据中去除频带内的数据。 同步单元同步陷波滤波数据，并且噪声估计单元确定从多个天线接收的同步数据之间的噪声协方差矩阵。 此外，均衡单元基于噪声协方差矩阵对同步数据执行信道均衡。

    Platform noise mitigation
    2.
    发明申请
    Platform noise mitigation 有权
    平台噪音减轻

    公开(公告)号：US20090086841A1

    公开(公告)日：2009-04-02

    申请号：US11904813

    申请日：2007-09-28

    申请人： Yongfang Guo ,  Lei Shao ,  Ernest T. Tsui ,  Bernard Arambepola ,  Thushara Hewavithana

    发明人： Yongfang Guo ,  Lei Shao ,  Ernest T. Tsui ,  Bernard Arambepola ,  Thushara Hewavithana

    IPC分类号： H04L27/28

    CPC分类号： H04L25/0242 ,  H04L27/2655 ,  H04L27/2659 ,  H04L27/266 ,  H04L27/2663 ,  H04L27/2665

    摘要： In one embodiment of the invention, a Fourier transform unit convert a unsynchronized received through multiple antennas to a frequency domain. Also, a spectrum estimation unit determines a power spectrum for the unsynchronized data. A notch filter removes data within a frequency band from additional unsynchronized data based on the power spectrum. A synchronization unit synchronizes the notch filtered data and a noise estimation unit determines a noise covariance matrix between the synchronized data received from multiple antennas. In addition, an equalization unit performs channel equalization on the synchronized data based on the noise covariance matrix.

    摘要翻译： 在本发明的一个实施例中，傅立叶变换单元将通过多个天线的未同步接收转换为频域。 此外，频谱估计单元确定用于非同步数据的功率谱。 陷波滤波器基于功率谱从附加的非同步数据中去除频带内的数据。 同步单元同步陷波滤波数据，并且噪声估计单元确定从多个天线接收的同步数据之间的噪声协方差矩阵。 此外，均衡单元基于噪声协方差矩阵对同步数据执行信道均衡。

    Platform noise estimation and mitigation
    3.
    发明授权
    Platform noise estimation and mitigation 有权
    平台噪声估计和缓解

    公开(公告)号：US07937741B2

    公开(公告)日：2011-05-03

    申请号：US11904932

    申请日：2007-09-29

    申请人： Yongfang Guo ,  Ernest T. Tsui

    发明人： Yongfang Guo ,  Ernest T. Tsui

    IPC分类号： H04N7/16 ,  H04N7/173

    CPC分类号： H04N21/64315 ,  H04N21/4382 ,  H04N21/4383 ,  H04N21/44209

    摘要： A method and apparatus for platform noise estimation and mitigation are provided. An embodiment of a method for mitigating noise may include receiving a data signal in a system platform, where the data signal includes a received pseudo noise sequence. Noise on the system platform may be estimated based on the received pseudo noise sequence. In some embodiments the noise on the system platform may be mitigated based on the noise estimate for the system platform.

    摘要翻译： 提供了一种用于平台噪声估计和减轻的方法和装置。 用于减轻噪声的方法的实施例可以包括在系统平台中接收数据信号，其中数据信号包括接收到的伪噪声序列。 可以基于接收到的伪噪声序列来估计系统平台上的噪声。 在一些实施例中，可以基于系统平台的噪声估计来减轻系统平台上的噪声。

    Platform noise estimation and mitigation
    4.
    发明申请
    Platform noise estimation and mitigation 有权
    平台噪声估计和缓解

    公开(公告)号：US20090089851A1

    公开(公告)日：2009-04-02

    申请号：US11904932

    申请日：2007-09-29

    申请人： Yongfang Guo ,  Ernest T. Tsui

    发明人： Yongfang Guo ,  Ernest T. Tsui

    IPC分类号： H04N7/173

    CPC分类号： H04N21/64315 ,  H04N21/4382 ,  H04N21/4383 ,  H04N21/44209

    摘要： A method and apparatus for platform noise estimation and mitigation are provided. An embodiment of a method for mitigating noise may include receiving a data signal in a system platform, where the data signal includes a received pseudo noise sequence. Noise on the system platform may be estimated based on the received pseudo noise sequence. In some embodiments the noise on the system platform may be mitigated based on the noise estimate for the system platform.

    摘要翻译： 提供了一种用于平台噪声估计和减轻的方法和装置。 用于减轻噪声的方法的实施例可以包括在系统平台中接收数据信号，其中数据信号包括接收到的伪噪声序列。 可以基于接收到的伪噪声序列来估计系统平台上的噪声。 在一些实施例中，可以基于系统平台的噪声估计来减轻系统平台上的噪声。

    Packet detection in the presence of platform noise in a wireless network
    6.
    发明授权
    Packet detection in the presence of platform noise in a wireless network 失效
    在无线网络中存在平台噪声的数据包检测

    公开(公告)号：US07636404B2

    公开(公告)日：2009-12-22

    申请号：US11322829

    申请日：2005-12-30

    申请人： Yongfang Guo ,  Xintian E. Lin ,  Qinghua Li ,  Stanley K Ling ,  Jorge Myszne ,  David Carasso

    发明人： Yongfang Guo ,  Xintian E. Lin ,  Qinghua Li ,  Stanley K Ling ,  Jorge Myszne ,  David Carasso

    IPC分类号： H03D1/00

    CPC分类号： H04L27/0014 ,  H04L7/042 ,  H04L2027/003

    摘要： Techniques are presented for improving packet detection within a wireless device in the presence of platform noise. In some embodiments, packet detection is carried out by first performing a correlation operation using a signal at an input of a wireless receiver. The result of the correlation may then be compared to a threshold value in order to make a packet arrival decision. The threshold value may be varied during device operation in a manner that enhances packet detection performance.

    摘要翻译： 提出了在存在平台噪声的情况下改进无线设备内的分组检测的技术。 在一些实施例中，通过首先使用无线接收机的输入端的信号执行相关操作来执行分组检​​测。 然后可以将相关的结果与阈值进行比较，以便使分组到达确定。 阈值可以在设备操作期间以增强分组检测性能的方式改变。

    Mitigation of interference from periodic noise
    7.
    发明申请
    Mitigation of interference from periodic noise 失效
    减轻周期性噪声的干扰

    公开(公告)号：US20070297521A1

    公开(公告)日：2007-12-27

    申请号：US11476365

    申请日：2006-06-27

    申请人： Yongfang Guo ,  Xintian E. Lin ,  Qinghua Li

    发明人： Yongfang Guo ,  Xintian E. Lin ,  Qinghua Li

    IPC分类号： H04K1/10

    CPC分类号： H04L27/2657 ,  H04B15/04 ,  H04L25/0212 ,  H04L25/025 ,  H04L27/2662

    摘要： A method and apparatus for mitigation of interference from periodic noise. An embodiment of a method includes receiving wireless signal data, where the data includes a periodic noise that varies in frequency over time. The method further includes performing a time-spectrum characterization of the data, and correlating the time-spectrum characterization of the data to determine a period of the periodic noise. The noise is dynamically weighted based at least in part on frequency variation of the noise.

    摘要翻译： 一种缓解周期噪声干扰的方法和装置。 方法的实施例包括接收无线信号数据，其中数据包括频率随时间变化的周期性噪声。 该方法还包括执行数据的时间谱表征，以及将数据的时间谱表征相关联以确定周期性噪声的周期。 噪声至少部分地基于噪声的频率变化来动态加权。

    Coaxial network communication node and methods for communicating multimedia over a coaxial network with reduced-length cyclic prefixes
    8.
    发明授权
    Coaxial network communication node and methods for communicating multimedia over a coaxial network with reduced-length cyclic prefixes 失效
    同轴网络通信节点和用于在具有缩短长度的循环前缀的同轴网络上通信多媒体的方法

    公开(公告)号：US08121023B2

    公开(公告)日：2012-02-21

    申请号：US12563280

    申请日：2009-09-21

    申请人： Kennan Laudel ,  Yongfang Guo

    发明人： Kennan Laudel ,  Yongfang Guo

    IPC分类号： H04J11/00 ,  H03H7/30

    CPC分类号： H04L5/0048 ,  H04L25/03019 ,  H04L27/2607 ,  H04L2025/03414 ,  H04L2025/03681 ,  H04L2025/03777 ,  H04W72/0406

    摘要： A coaxial network communication node receives multimedia content with one or more other nodes in a coaxial network. The node determines a delay-spread of a coaxial channel based on receipt of a probe from a transmitting node and configures a channel-shortening time-domain equalizer (TEQ) filter to effectively shorten the channel based on the delay spread. The node instructs the transmitting node to shorten a length of a cyclic prefix for subsequent packet-based transmissions to be received from the transmitting node. The probe is stored and reused until the channel-shortening TEQ filter converges. The nodes may be configured to communicate in accordance with the Multimedia over Coax Alliance (MoCA®) specifications.

    摘要翻译： 同轴网络通信节点在同轴网络中与一个或多个其他节点接收多媒体内容。 该节点基于从发送节点接收探测器来确定同轴信道的延迟扩展，并且配置信道缩短时域均衡器（TEQ）滤波器，以基于延迟扩展来有效地缩短信道。 节点指示发送节点缩短用于从发送节点接收的后续基于分组的传输的循环前缀的长度。 探头被存储并重复使用，直到通道缩短TEQ滤波器收敛。 节点可以被配置为根据多媒体同轴联盟（MoCA）规范进行通信。