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    Method of polling second stations for functional quality and maintenance data in a discrete multitone spread spectrum communications system
    1.
    发明授权
    Method of polling second stations for functional quality and maintenance data in a discrete multitone spread spectrum communications system 失效
    在离散多音频扩频通信系统中轮询第二站功能质量和维护数据的方法

    公开(公告)号：US06480522B1

    公开(公告)日：2002-11-12

    申请号：US09723338

    申请日：2000-11-28

    申请人： Elliott Hoole ,  Mary Jesse ,  Robert G. Mechaley, Jr. ,  David James Ryan ,  David Stephenson

    发明人： Elliott Hoole ,  Mary Jesse ,  Robert G. Mechaley, Jr. ,  David James Ryan ,  David Stephenson

    IPC分类号： A61F206

    CPC分类号： H04B1/69 ,  H04B1/692 ,  H04B1/707 ,  H04B1/7107 ,  H04B7/04 ,  H04B2201/70702 ,  H04L5/0021 ,  H04L5/0026 ,  H04L5/0048 ,  H04L5/026 ,  H04L25/0228 ,  H04L25/03019 ,  H04L27/186 ,  H04L27/3416 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04W16/14 ,  H04W88/08

    摘要： A discrete multitone stacked-carrier spread spectrum communication method is based on frequency domain spreading including multiplication of a baseband signal by a set of superimposed, or stacked, complex sinusoid carrier waves. In a preferred embodiment, the spreading involves energizing the bins of a large Fast Fourier transform (FFT). This provides a considerable savings in computational complexity for moderate output FFT sizes. Point-to-multipoint and multipoint-to-multipoint (nodeless) network topologies are possible. A code-nulling method is included for interference cancellation and enhanced signal separation by exploiting the spectral diversity of the various sources. The basic method may be extended to include multielement antenna array nulling methods for interference cancellation and enhanced signal separation using spatial separation. Such methods permit directive and retrodirective transmission systems that adapt or can be adapted to the radio environment. Such systems are compatible with bandwidth-on-demand and higher-order modulation formats and use advanced adaptation algorithms. In a specific embodiment the spectral and spatial components of the adaptive weights are calculated in a unified operation based on the mathematical analogy between the spectral and spatial descriptions of the airlink.

    摘要翻译： 离散多媒体叠层载波扩频通信方法是基于频域扩展，包括基带信号乘以叠加的或叠加的复数正弦波载波的集合。 在优选实施例中，扩展涉及激励大的快速傅立叶变换（FFT）的信息仓。 这为中等输出FFT大小节省了大量的计算复杂度。 点对多点和多点到多点（无节点）网络拓扑是可能的。 通过利用各种光源的光谱多样性，可以包括一个代码归零方法用于干扰消除和增强的信号分离。 基本方法可以扩展为包括用于干扰消除的多元天线阵列归零方法和使用空间分离的增强信号分离。 这种方法允许适应或可以适应于无线电环境的指导和逆向传输系统。 这样的系统与带宽按需和高阶调制格式兼容，并且使用高级适配算法。 在具体实施例中，基于空中链路的频谱和空间描述之间的数学类比，以统一的操作来计算自适应权重的频谱和空间分量。

    Radio system having distributed real-time processing
    6.
    发明授权
    Radio system having distributed real-time processing 失效

    公开(公告)号：US07606594B2

    公开(公告)日：2009-10-20

    申请号：US10373626

    申请日：2003-02-24

    申请人： Mary Jesse ,  Elliott Hoole ,  Robert G. Mechaley, Jr. ,  Greg Veintimilla

    发明人： Mary Jesse ,  Elliott Hoole ,  Robert G. Mechaley, Jr. ,  Greg Veintimilla

    IPC分类号： H04M1/00

    CPC分类号： H04W84/04 ,  H04L12/189 ,  H04W88/085 ,  H04W88/14

    摘要： A distributed radio system is disclosed. Transmit and receive packets of data are transported over a relatively high-speed multiplexed network, which in one embodiment may be an Ethernet network. The distributed radio system comprises in one embodiment a centrally-located network-level processing unit connected via network connections to one or more intermediate-level processing units. The intermediate-level processing units may be distributed throughout the coverage area. The processing units perform digital signal processing, as well as higher level processing such as signal routing, speech transcoding and proper interfacing to external environments, such as a macrocellular environment. Radio elements are provided that are accurately timed or synchronized, such that the radio elements have their own time base to ensure proper transmission, even when unpredictable network delays occur.

    Radio system having distributed real-time processing
    7.
    发明申请
    Radio system having distributed real-time processing 审中-公开
    无线电系统具有分布式实时处理

    公开(公告)号：US20090325636A1

    公开(公告)日：2009-12-31

    申请号：US12584348

    申请日：2009-09-02

    申请人： Mary Jesse ,  Elliott Hoole ,  Robert G. Mechaley, JR. ,  Greg Veintimilla

    发明人： Mary Jesse ,  Elliott Hoole ,  Robert G. Mechaley, JR. ,  Greg Veintimilla

    IPC分类号： H04M1/00

    CPC分类号： H04W84/04 ,  H04L12/189 ,  H04W88/085 ,  H04W88/14

    摘要： A distributed radio system is disclosed. Transmit and receive packets of data are transported over a relatively high-speed multiplexed network, which in one embodiment may be an Ethernet network. The distributed radio system comprises in one embodiment a centrally-located network-level processing unit connected via network connections to one or more intermediate-level processing units. The intermediate-level processing units may be distributed throughout the coverage area. The processing units perform digital signal processing, as well as higher level processing such as signal routing, speech transcoding and proper interfacing to external environments, such as a macrocellular environment. Radio elements are provided that are accurately timed or synchronized, such that the radio elements have their own time base to ensure proper transmission, even when unpredictable network delays occur.

    摘要翻译： 公开了一种分布式无线电系统。 发送和接收数据包通过相对高速的多路复用网络传送，在一个实施例中可以是以太网。 分布式无线电系统在一个实施例中包括通过网络连接连接到一个或多个中间级处理单元的位于中心的网络级处理单元。 中间级处理单元可以分布在整个覆盖区域。 处理单元执行数字信号处理，以及诸如信号路由，语音转码以及诸如宏蜂窝环境的外部环境的适当接口的更高级处理。 提供精确定时或同步的无线电元件，使得无线电元件具有其自己的时间基准以确保正确的传输，即使在发生不可预测的网络延迟时。