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    Wireless communication systems and methods for long-code communications for regenerative multiple user detection involving matched-filter outputs
    102.
    发明申请
    Wireless communication systems and methods for long-code communications for regenerative multiple user detection involving matched-filter outputs 有权
    用于具有匹配滤波器输出的再生多用户检测的长码通信的无线通信系统和方法

    公开(公告)号：US20030103558A1

    公开(公告)日：2003-06-05

    申请号：US10099471

    申请日：2002-03-14

    Inventor： John H. Oates

    IPC: H04B001/69

    CPC classification number: H04B1/71052 ,  H04B1/707 ,  H04B1/7093 ,  H04B1/7105 ,  H04B1/71075 ,  H04B1/7115 ,  H04B2201/70707 ,  H04B2201/70711

    Abstract: The invention provides improved CDMA, WCDMA (UTMS) or other spread spectrum communication systems of the type that processes one or more spread-spectrum waveforms, each representative of a waveform received from a respective user (or other transmitting device). The improvement is characterized by a first logic element that generates a residual composite spread-spectrum waveform as a function of an arithmetic difference between a composite spread-spectrum waveform for all users (or other transmitters) and an estimated spread-spectrum waveform for each user. It is further characterized by one or more second logic elements that generate, for at least a selected user (or other transmitter), a refined spread-spectrum waveform as a function of a sum of the residual composite spread-spectrum waveform and the estimated spread-spectrum waveform for that user.

    Abstract translation: 本发明提供了改进的CDMA，WCDMA（UTMS）或处理一个或多个扩展频谱波形类型的其他扩频通信系统，每个扩频波形代表从相应用户（或其他发送设备）接收的波形。 该改进的特征在于第一逻辑元件，其产生作为所有用户（或其他发射机）的复合扩频波形与每个用户的估计扩频波形之间的算术差的函数的残差复合扩频波形 。 进一步的特征在于一个或多个第二逻辑元件，对于至少一个选定的用户（或其他发射机），生成作为残差复合扩频波形和估计扩频之和的函数的精细扩频波形 该用户的光谱波形。

    Computational methods for use in a short-code spread-spectrum communications system
    103.
    发明申请
    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：US20030091102A1

    公开(公告)日：2003-05-15

    申请号：US10098628

    申请日：2002-03-14

    Inventor： John H. Oates

    IPC: H04B001/69

    CPC classification number: H04B1/71052 ,  H04B1/707 ,  H04B1/7093 ,  H04B1/7105 ,  H04B1/71075 ,  H04B1/7115 ,  H04B2201/70707 ,  H04B2201/70711

    Abstract: 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, nullgamma matrixnull) 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, nullR-matrixnull) 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.

    Abstract translation: 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。

    Hardware and software for performing computations in a short-code spread-spectrum communications system
    104.
    发明申请
    Hardware and software for performing computations in a short-code spread-spectrum communications system 有权
    用于在短码扩频通信系统中执行计算的硬件和软件

    公开(公告)号：US20030076875A1

    公开(公告)日：2003-04-24

    申请号：US10099923

    申请日：2002-03-14

    Inventor： John H. Oates

    IPC: H04B001/707

    CPC classification number: H04B1/71052 ,  H04B1/707 ,  H04B1/7093 ,  H04B1/7105 ,  H04B1/71075 ,  H04B1/7115 ,  H04B2201/70707 ,  H04B2201/70711

    Abstract: 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, nullgamma matrixnull) 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, nullR-matrixnull) 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.

    Abstract translation: 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。

    Flexible sliding correlator for direct sequence spread spectrum systems
    105.
    发明授权
    Flexible sliding correlator for direct sequence spread spectrum systems 失效
    用于直接序列扩频系统的灵活滑动相关器

    公开(公告)号：US06363105B1

    公开(公告)日：2002-03-26

    申请号：US09024120

    申请日：1998-02-17

    Applicant: Essam Sourour ,  Greg Bottomley ,  David Barrow ,  Rajaram Ramesh ,  Clarence V. Roberts

    Inventor： Essam Sourour ,  Greg Bottomley ,  David Barrow ,  Rajaram Ramesh ,  Clarence V. Roberts

    IPC: H04L2730

    CPC classification number: H04B1/7075 ,  H04B1/70752 ,  H04B1/70758 ,  H04B1/7093 ,  H04B1/7095 ,  H04B1/7115 ,  H04B2201/70711

    Abstract: A flexible sliding correlator for use in a spread spectrum receiver divides baseband signal samples into different groups, associates each group with a different section of a spreading code, and combines ones of the signal samples with corresponding values in the spreading code section. The groupings and spreading code sections can be changed during operation of the receiver to maximize performance of the receiver under different or changing conditions. In addition, the sample and spreading code value combinations can be further combined in different ways, and the further combinations can be changed during operation of the receiver. According to another aspect of the invention, the baseband signal can be sampled either uniformly or non-uniformly. The phase and frequency of the baseband sampling can be adjusted during operation of the receiver so that samples are taken very close to the optimum sampling position, at the peak of a chip waveform in the baseband signal.

    Abstract translation: 用于扩展频谱接收机的灵活的滑动相关器将基带信号样本分成不同的组，每个组与扩展码的不同部分相关联，并将信号样本中的一个与扩展码部分中的相应值组合。 可以在接收机的操作期间改变分组和扩展码部分，以在不同或变化的条件下最大化接收机的性能。 此外，样本和扩展码值组合可以以不同的方式进一步组合，并且可以在接收机的操作期间改变进一步的组合。 根据本发明的另一方面，可以均匀地或不均匀地采样基带信号。 基带采样的相位和频率可以在接收机工作期间进行调整，使样本在基带信号的芯片波形峰值处非常接近最佳采样位置。

    Wireless spread spectrum communication platform using dynamically reconfigurable logic
    106.
    发明申请
    Wireless spread spectrum communication platform using dynamically reconfigurable logic 审中-公开
    无线扩频通信平台采用动态可重构逻辑

    公开(公告)号：US20020031166A1

    公开(公告)日：2002-03-14

    申请号：US09772584

    申请日：2001-01-29

    Inventor： Ravi Subramanian ,  Uma Jha ,  Joel D. Medlock

    IPC: G06F013/12 ,  G06F013/38 ,  H04L023/00

    CPC classification number: H04B1/0003 ,  H04B1/707 ,  H04B2201/7071 ,  H04B2201/70711

    Abstract: A wireless spread spectrum communication platform for processing a communication signal is disclosed herein. The wireless communication platform includes a first computing element, a second computing element, and a reconfigurable interconnect. The first computing element is coupled to the second computing element via the reconfigurable interconnect. A design configuration of the first computing element is heterogeneous with respect to a design configuration of the second computing element. The reconfigurable interconnect has an uncommitted architecture, thereby allowing it to be configured by an outside source to couple portions of the first reconfigurable interconnect with portions of the second reconfigurable interconnect in a variety of combinations. The first computing element, the second computing element, and the reconfigurable interconnect operable to perform discrete functions suitable for processing of the communication signal.

    Abstract translation: 本文公开了一种用于处理通信信号的无线扩频通信平台。 无线通信平台包括第一计算元件，第二计算元件和可重构互连。 第一计算元件经由可重构互连耦合到第二计算元件。 关于第二计算元件的设计配置，第一计算元件的设计配置是异构的。 可重配置互连具有未提交的架构，从而允许其由外部源配置以将第一可重配置互连的部分以各种组合耦合第二可重配置互连的部分。 第一计算元件，第二计算元件和可重构互连可操作以执行适于处理通信信号的离散功能。

    Method of generating a configuration for a configurable spread spectrum communication device
    107.
    发明申请
    Method of generating a configuration for a configurable spread spectrum communication device 有权
    生成可配置扩频通信设备的配置的方法

    公开(公告)号：US20010034227A1

    公开(公告)日：2001-10-25

    申请号：US09772582

    申请日：2001-01-29

    Inventor： Ravi Subramanian ,  Christopher Woodthorpe

    IPC: H04M001/00

    CPC classification number: H04B1/0003 ,  H04B1/707 ,  H04B2201/7071 ,  H04B2201/70711

    Abstract: A method of generating a configuration for a configurable spread spectrum communication device is disclosed herein. The method, implemented on a computing device having a processor and a computer readable memory, starts with a first step of receiving an input identifying a desired function, and a desired operation within the desired function, to be implemented by a configurable communication device. In a subsequent step, a signal flow path for the desired operation is generated by the computing device. Next, the desired operation is mapped onto a computing element within the configurable communication device; the computing element having localized control and being function-specific. The aforementioned steps are repeated to satisfy multiple operations required to enable the desired function. Next, a configurable interconnect of the configurable electronic device is configured to enable the mapping operation and signal flow path across a computing element for each of the multiple operations which together enable the desired function.

    Abstract translation: 本文公开了一种生成可配置扩频通信设备的配置的方法。 在具有处理器和计算机可读存储器的计算设备上实现的方法开始于接收标识期望功能的输入以及期望功能内的期望操作的第一步骤，以由可配置通信设备实现。 在随后的步骤中，用于期望操作的信号流路径由计算设备产生。 接下来，将期望的操作映射到可配置通信设备内的计算元件上; 该计算元件具有局部控制并且是功能特定的。 重复上述步骤以满足实现期望功能所需的多个操作。 接下来，可配置电子设备的可配置互连被配置为使得能够跨越计算元件的映射操作和信号流路径用于多个操作中的每一个，这些操作共同实现期望的功能。

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