Hardware and software for performing computations in a short-code spread-spectrum communications system

    公开(公告)号:US07110431B2

    公开(公告)日:2006-09-19

    申请号:US10099923

    申请日:2002-03-14

    申请人: John H. Oates

    发明人: John H. Oates

    IPC分类号: H04B1/69

    摘要: The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a multiprocessor, multiuser detection system for detecting user transmitted symbols in CDMA short-code spectrum waveforms. A first processing element generates a matrix (hereinafter, “gamma matrix”) that represents a correlation between a short-code associated with one user and those associated with one or more other users. A set of second processing elements generates, e.g., from the gamma matrix, a matrix (hereinafter, “R-matrix”) that represents cross-correlations among user waveforms based on their amplitudes and time lags. A third procesing element produces estimates of the user transmitted symbols as a function of the R-matrix.

    Wireless communications systems and methods for short-code multiple user detection
    2.
    发明授权
    Wireless communications systems and methods for short-code multiple user detection 有权
    用于短码多用户检测的无线通信系统和方法

    公开(公告)号:US07248623B2

    公开(公告)日:2007-07-24

    申请号:US10099536

    申请日:2002-03-14

    申请人: John H. Oates

    发明人: John H. Oates

    IPC分类号: H04B1/00

    摘要: The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a multiprocessor, multiuser detection system for detecting user transmitted symbols in CDMA short-code spectrum waveforms. A first processing element generates a matrix (hereinafter, “gamma matrix”) that represents a correlation between a short-code associated with one user and those associated with one or more other users. A set of second processing elements generates, e.g., from the gamma matrix, a matrix (hereinafter, “R-matrix”) that represents cross-correlations among user waveforms based on their amplitudes and time lags. A third processing element produces estimates of the user transmitted symbols as a function of the R-matrix.

    摘要翻译: 本发明提供了用于多用户检测(MUD)处理的方法和装置,其具有例如在改进容量CDMA和其它无线基站中的应用。 本发明的一个方面提供一种用于在CDMA短码频谱波形中检测用户发送符号的多处理器,多用户检测系统。 第一处理元件生成表示与一个用户相关联的短码与与一个或多个其他用户相关联的短码之间的相关性的矩阵(以下称为“伽马矩阵”)。 一组第二处理元件例如从伽马矩阵生成基于它们的幅度和时间滞后的用户波形之间的互相关的矩阵(以下称为“R矩阵”)。 第三处理单元产生作为R矩阵的函数的用户发送符号的估计。

    Low noise in-building distribution network for wireless signals
    4.
    发明授权
    Low noise in-building distribution network for wireless signals 有权
    无线信号低噪声建筑物分配网络

    公开(公告)号:US06560441B1

    公开(公告)日:2003-05-06

    申请号:US09548878

    申请日:2000-04-13

    IPC分类号: H04B700

    CPC分类号: H04B7/2606

    摘要: A solution for providing an improved fading margin environment for in-building wireless coverage. An optical fiber or other available broadband signal distribution network is used to distribute signals between centrally located base transceiver station (BTS) equipment and remotely located transceiver equipment referred to herein as a cable microcell integrator (CMI). The CMIs are deployed in a configuration to provide radio frequency coverage in a desired microcell area such as a building floor. In a preferred embodiment, a leaky coaxial cable is used as a radiating element within the microcell.

    摘要翻译: 为建筑物内无线覆盖提供改进的衰落边缘环境的解决方案。 光纤或其他可用的宽带信号分配网络用于在中央位置的基站收发机(BTS)设备和本文中称为电缆微小区集成器(CMI)的远程定位收发器设备之间分配信号。 CMI部署在配置中以在期望的微小区区域(例如建筑物楼层)中提供射频覆盖。 在优选实施例中,泄漏同轴电缆用作微小区内的辐射元件。

    Wireless communications systems and methods for virtual user based multiple user detection utilizing vector processor generated mapped cross-correlation matrices
    5.
    发明授权
    Wireless communications systems and methods for virtual user based multiple user detection utilizing vector processor generated mapped cross-correlation matrices 有权
    基于虚拟用户的多用户检测的无线通信系统和方法,利用向量处理器生成的映射互相关矩阵

    公开(公告)号:US07218668B2

    公开(公告)日:2007-05-15

    申请号:US10099546

    申请日:2002-03-14

    IPC分类号: H04B1/69 H04B1/707 H04B7/216

    摘要: The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a multiprocessor, multiuser detection system for detecting user transmitted symbols in CDMA short-code spectrum waveforms. A first processing element generates a matrix (hereinafter, “gamma matrix”) that represents a correlation between a short-code associated with one user and those associated with one or more other users. A set of second processing elements generates, e.g., from the gamma matrix, a matrix (hereinafter, “R-matrix”) that represents cross-correlations among user waveforms based on their amplitudes and time lags. A third processing element produces estimates of the user transmitted symbols as a function of the R-matrix.

    摘要翻译: 本发明提供了用于多用户检测(MUD)处理的方法和装置,其具有例如在改进容量CDMA和其它无线基站中的应用。 本发明的一个方面提供一种用于在CDMA短码频谱波形中检测用户发送符号的多处理器,多用户检测系统。 第一处理元件生成表示与一个用户相关联的短码与与一个或多个其他用户相关联的短码之间的相关性的矩阵(以下称为“伽马矩阵”)。 一组第二处理元件例如从伽马矩阵生成基于它们的幅度和时间滞后的用户波形之间的互相关的矩阵(以下称为“R矩阵”)。 第三处理单元产生作为R矩阵的函数的用户发送符号的估计。

    Load balancing computational methods in a short-code spread-spectrum communications system
    7.
    发明授权
    Load balancing computational methods in a short-code spread-spectrum communications system 有权
    短码扩频通信系统中的负载均衡计算方法

    公开(公告)号:US07203221B2

    公开(公告)日:2007-04-10

    申请号:US10099916

    申请日:2002-03-14

    申请人: John H. Oates

    发明人: John H. Oates

    IPC分类号: H04B1/00

    摘要: The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a multiprocessor, multiuser detection system for detecting user transmitted symbols in CDMA short-code spectrum waveforms. A first processing element generates a matrix (hereinafter, “gamma matrix”) that represents a correlation between a short-code associated with one user and those associated with one or more other users. A set of second processing elements generates, e.g., from the gamma matrix, a matrix (hereinafter, “R-matrix”) that represents cross-correlations among user waveforms based on their amplitudes and time lags. A third processing element produces estimates of the user transmitted symbols as a function of the R-matrix.

    摘要翻译: 本发明提供了用于多用户检测(MUD)处理的方法和装置,其具有例如在改进容量CDMA和其它无线基站中的应用。 本发明的一个方面提供一种用于在CDMA短码频谱波形中检测用户发送符号的多处理器,多用户检测系统。 第一处理元件生成表示与一个用户相关联的短码与与一个或多个其他用户相关联的短码之间的相关性的矩阵(以下称为“伽马矩阵”)。 一组第二处理元件例如从伽马矩阵生成基于它们的幅度和时间滞后的用户波形之间的互相关的矩阵(以下称为“R矩阵”)。 第三处理单元产生作为R矩阵的函数的用户发送符号的估计。

    Computational methods for use in a short-code spread-spectrum communications system
    8.
    发明授权
    Computational methods for use in a short-code spread-spectrum communications system 有权
    用于短码扩频通信系统的计算方法

    公开(公告)号:US07164706B2

    公开(公告)日:2007-01-16

    申请号:US10098628

    申请日:2002-03-14

    申请人: John H. Oates

    发明人: John H. Oates

    IPC分类号: H04B1/69 H04B1/713

    摘要: The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a multiprocessor, multiuser detection system for detecting user transmitted symbols in CDMA short-code spectrum waveforms. A first processing element generates a matrix (hereinafter, “gamma matrix”) that represents a correlation between a short-code associated with one user and those associated with one or more other users. A set of second processing elements generates, e.g., from the gamma matrix, a matrix (hereinafter, “R-matrix”) that represents cross-correlations among user waveforms based on their amplitudes and time lags. A third procesing element produces estimates of the user transmitted symbols as a function of the R-matrix.

    摘要翻译: 本发明提供了用于多用户检测(MUD)处理的方法和装置,其具有例如在改进容量CDMA和其它无线基站中的应用。 本发明的一个方面提供一种用于在CDMA短码频谱波形中检测用户发送符号的多处理器,多用户检测系统。 第一处理元件生成表示与一个用户相关联的短码与与一个或多个其他用户相关联的短码之间的相关性的矩阵(以下称为“伽马矩阵”)。 一组第二处理元件例如从伽马矩阵生成基于它们的幅度和时间滞后的用户波形之间的互相关的矩阵(以下称为“R矩阵”)。 第三处理元素产生用户传输符号作为R矩阵的函数的估计。