Circular constellations with coherent gain/differential phase and pilots
    1.
    发明授权
    Circular constellations with coherent gain/differential phase and pilots 有权
    具有相干增益/差分相位和导频的圆星座

    公开(公告)号:US07376075B1

    公开(公告)日:2008-05-20

    申请号:US10949861

    申请日:2004-09-24

    IPC分类号: H04J9/00

    CPC分类号: H04L27/361 H04L27/3494

    摘要: The modulation method and system of the presented herein involves mapping data onto a constellations comprising a set of concentric circles in a two-dimensional plane, one dimension for the amplitude and one for the phase. The phase dimension is coded differentially, while the amplitude dimension is coded coherently. The circles in each constellation may contain equal number of points, and in other embodiments more points may be used on the outer circles. The data may be coded with dual Trellis codes, one code for the phase data and another code for the amplitude data.

    摘要翻译: 本文提出的调制方法和系统涉及将数据映射到包括二维平面中的一组同心圆的星座,幅度为一维,相位为一。 相位维度是差分编码的,而幅度维数是相干编码的。 每个星座中的圆可以包含相等数量的点,并且在其他实施例中,可以在外圆上使用更多的点。 数据可以用双格码编码,相位数据的一个代码和振幅数据的另一个代码。

    Bandwidth management in a powerline network
    2.
    发明授权
    Bandwidth management in a powerline network 有权
    电力线网络中的带宽管理

    公开(公告)号:US08737420B2

    公开(公告)日:2014-05-27

    申请号:US11492505

    申请日:2006-07-24

    IPC分类号: H04J3/16

    摘要: There is provided a powerline network that includes a number of stations including a central coordinator for coordinating transmissions of each of the stations. Each of the stations is configurable to generate one or more tone maps for communicating with each of the other stations in the powerline network. Each tone map includes a set of tones to be used on a communication link between two of the stations. Each tone map further includes a unique set of modulation methods for each tone. Each of the stations is further configurable to generate a default tone map for communicating with each of the other stations, where the default tone map is valid for all portions of a powerline cycle. Each of the stations is further configurable to monitor its bandwidth needs and to request additional bandwidth from the central coordinator.

    摘要翻译: 提供了一个电力线网络,其包括多个站,包括用于协调每个站的传输的中央协调器。 每个站可配置为生成用于与电力线网络中的每个其他站点通信的一个或多个音调映射。 每个音调图包括要在两个站之间的通信链路上使用的一组音调。 每个音调图还包括用于每个音调的唯一的调制方法集合。 每个站还可配置以产生用于与每个其他站通信的默认色调映射,其中默认色调图对于电力线循环的所有部分是有效的。 每个站点进一步可配置以监视其带宽需求并从中央协调器请求附加带宽。

    Flexible scheduling of resources in a noisy environment
    3.
    发明授权
    Flexible scheduling of resources in a noisy environment 有权
    在嘈杂的环境中灵活调度资源

    公开(公告)号:US08553706B2

    公开(公告)日:2013-10-08

    申请号:US11492506

    申请日:2006-07-24

    IPC分类号: H04L12/28

    摘要: There is provided a powerline network that includes a number of stations including a central coordinator for coordinating transmissions of each of the stations. The central coordinator is configurable to transmit a beacon at an interval based on a phase of a powerline cycle. The interval of the beacon can be substantially equal to two periods of the powerline cycle. The interval of the beacon includes a reserved region including a persistent allocation region and a non-persistent allocation region. The beacon also includes a broadcast message including a persistent schedule and a non-persistent schedule. The persistent schedule is valid for a current beacon period and a number of subsequent beacon periods as indicated by the beacon, while the non-persistent schedule is valid for a single beacon period. The persistent allocation region and the non-persistent allocation region are determined based on the persistent schedule and the non-persistent schedule, respectively.

    摘要翻译: 提供了一个电力线网络,其包括多个站,包括用于协调每个站的传输的中央协调器。 中央协调器可配置为基于电力线周期的相位以一定间隔发送信标。 信标的间隔可以基本上等于电力线周期的两个周期。 信标的间隔包括包括持久分配区域和非持久分配区域的保留区域。 信标还包括包括持续调度和非持续调度的广播消息。 持续调度对于由信标指示的当前信标周期和后续信标周期的数量是有效的,而非持续调度对于单个信标周期是有效的。 分别基于永久调度和非持续调度来确定持续分配区域和非持久性分配区域。