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24 条记录 (耗时 0.042 秒)

    Optimal feedback weighting for soft-decision cancellers
    1.
    发明申请
    Optimal feedback weighting for soft-decision cancellers 有权
    软决策消除器的最优反馈权重

    公开(公告)号：US20060227909A1

    公开(公告)日：2006-10-12

    申请号：US11233636

    申请日：2005-09-23

    申请人： John Thomas ,  Michael McCloud ,  Vijay Nagarajan

    发明人： John Thomas ,  Michael McCloud ,  Vijay Nagarajan

    IPC分类号： H03D1/04 ,  H04B1/10

    CPC分类号： H04B1/7107

    摘要： A receiver produces optimal weights for cancelling multipath interference. An SINR measurement module generates SINR measurements corresponding to soft symbol estimates produced by a baseband receiver from a received multipath signal. Each soft symbol estimate is replaced with either a hard estimate or a weighted soft estimate based on how each corresponding SINR measurement compares to a predetermined threshold. The received multipath signal and estimated interference signals generated from the hard symbol estimates and/or the weighted soft symbol estimates are combined to produce interference cancelled signals that may be combined via maximum ratio combining to produce an interference-cancelled MRC signal.

    摘要翻译： 接收机产生用于消除多路径干扰的最优权重。 SINR测量模块从接收的多路径信号产生对应于由基带接收机产生的软符号估计的SINR测量。 基于每个对应的SINR测量与预定阈值相比较，每个软符号估计被硬估计或加权软估计替代。 将从硬符号估计和/或加权软符号估计产生的所接收的多路径信号和估计干扰信号组合以产生干扰消除的信号，该干扰消除信号可以经由最大比合并来组合以产生干扰消除的MRC信号。

    Iterative interference cancellation using mixed feedback weights and stabilizing step sizes
    2.
    发明申请
    Iterative interference cancellation using mixed feedback weights and stabilizing step sizes 有权
    使用混合反馈权重和稳定步长的迭代干扰消除

    公开(公告)号：US20070110133A1

    公开(公告)日：2007-05-17

    申请号：US11451932

    申请日：2006-06-13

    申请人： Tommy Guess ,  Michael McCloud ,  Vijay Nagarajan ,  Gagandeep Lamba

    发明人： Tommy Guess ,  Michael McCloud ,  Vijay Nagarajan ,  Gagandeep Lamba

    IPC分类号： H04B1/00 ,  H03D1/04

    CPC分类号： H04L25/03006 ,  H04B1/7107 ,  H04B1/71072 ,  H04B1/71075 ,  H04B1/7115 ,  H04B1/712 ,  H04L2025/03375

    摘要： A receiver is configured for canceling intra-cell and inter-cell interference in coded, multiple-access, spread-spectrum transmissions that propagate through frequency-selective communication channels. The receiver employs iterative symbol-estimate weighting, subtractive cancellation with a stabilizing step-size, and mixed-decision symbol estimates. Receiver embodiments may be implemented explicitly in software or programmed hardware, or implicitly in standard Rake-based hardware either within the Rake (i.e., at the finger level) or outside the Rake (i.e., at the user or subchannel symbol level).

    摘要翻译： 接收机被配置为消除通过频率选择性通信信道传播的编码，多址，扩频传输中的小区内和小区间干扰。 接收机采用迭代符号估计加权，具有稳定步长的减法消除和混合判决符号估计。 接收机实施例可以在软件或编程硬件中明确实现，或者隐含地在Rake（即，在手指级）处或Rake外部（即，在用户或子信道符号级别）处于标准Rake的硬件中。

    Iterative interference canceller for wireless multiple-access systems with multiple receive antennas
    4.
    发明申请
    Iterative interference canceller for wireless multiple-access systems with multiple receive antennas 有权
    具有多个接收天线的无线多址系统的迭代干扰消除器

    公开(公告)号：US20070110136A1

    公开(公告)日：2007-05-17

    申请号：US11491674

    申请日：2006-07-24

    申请人： Tommy Guess ,  Michael McCloud ,  Vijay Nagarajan ,  Gagandeep Lamba

    发明人： Tommy Guess ,  Michael McCloud ,  Vijay Nagarajan ,  Gagandeep Lamba

    IPC分类号： H04B1/00

    CPC分类号： H04B1/7115 ,  H04B1/71075 ,  H04B1/712 ,  H04B7/0845 ,  H04B7/0894 ,  H04B2201/70702 ,  H04J11/0063

    摘要： This invention teaches to the details of an interference canceling receiver for canceling intra-cell and inter-cell interference in coded, multiple-access, spread spectrum transmissions that propagate through frequency selective communication channels to a multiplicity of receive antennas. The receiver is designed or adapted through the repeated use of symbol-estimate weighting, subtractive cancellation with a stabilizing step-size, and mixed-decision symbol estimates. Receiver embodiments may be designed, adapted, and implemented explicitly in software or programmed hardware, or implicitly in standard RAKE-based hardware either within the RAKE (i.e., at the finger level) or outside the RAKE (i.e., at the user or subchannel symbol level). Embodiments may be employed in user equipment on the forward link or in a base station on the reverse link. It may be adapted to general signal processing applications where a signal is to be extracted from interference.

    摘要翻译： 本发明教导了用于消除通过频率选择通信信道传播到多个接收天线的经编码的多址扩频传输中的小区内和小区间干扰的干扰消除接收机的细节。 通过重复使用符号估计加权，具有稳定步长的减法消除和混合判决符号估计来设计或调整接收机。 接收器实施例可以在软件或编程硬件中明确设计，适应和实现，或隐含地在RAKE（即，在手指级）或RAKE外部（即在用户或子信道符号处）内的基于标准RAKE的硬件中 水平）。 可以在前向链路上的用户设备或反向链路上的基站中采用实施例。 它可以适用于要从干扰中提取信号的一般信号处理应用。

    Soft weighted interference cancellation for CDMA systems
    5.
    发明申请
    Soft weighted interference cancellation for CDMA systems 有权
    CDMA系统的软加权干扰消除

    公开(公告)号：US20060227854A1

    公开(公告)日：2006-10-12

    申请号：US11266928

    申请日：2005-11-04

    申请人： Michael McCloud ,  Vijay Nagarajan

    发明人： Michael McCloud ,  Vijay Nagarajan

    IPC分类号： H04B1/00 ,  H04B7/216

    CPC分类号： H04B1/1027 ,  H04B1/7103 ,  H04B1/7107 ,  H04B1/712

    摘要： Interference is cancelled from a baseband signal by synthesizing interference from estimated symbols in interfering subchannels. The estimated symbols are hard-coded, soft weighted, or zeroed, depending on the value of an estimated pre-processed signal-to-interference-and-noise ratio (SINR) in each subchannel in order to maximize a post-processed SINR. The estimated pre-processed SINR is obtained from averages of estimated symbol energies and estimated noise variances, or from related statistical procedures.

    摘要翻译： 通过合成来自干扰子信道中的估计符号的干扰，从基带信号中消除干扰。 所估计的符号是硬编码的，软加权的或归零的，这取决于每个子信道中估计的预处理的信号与干扰噪声比（SINR）的值，以便最大化后处理的SINR。 估计的预处理SINR从估计符号能量和估计噪声方差的平均值或相关统计程序中获得。

    Variable interference cancellation technology for CDMA systems
    6.
    发明申请
    Variable interference cancellation technology for CDMA systems 有权
    CDMA系统可变干扰消除技术

    公开(公告)号：US20060227730A1

    公开(公告)日：2006-10-12

    申请号：US11272411

    申请日：2005-11-10

    申请人： Michael McCloud ,  Vijay Nagarajan

    发明人： Michael McCloud ,  Vijay Nagarajan

    IPC分类号： H04B3/20

    CPC分类号： H04J11/0023 ,  H04B1/10 ,  H04B1/7103 ,  H04B1/7107 ,  H04B1/7115 ,  H04B1/7117 ,  H04B1/712 ,  H04J13/0003 ,  H04J13/20 ,  H04J2011/0006 ,  H04W24/06

    摘要： An interference canceller comprises a composite interference vector (CIV) generator configured to produce a CIV by combining soft and/or hard estimates of interference, an interference-cancelling operator configured for generating a soft-projection operator, and a soft-projection canceller configured for performing a soft projection of the received baseband signal to output an interference-cancelled signal. Weights used in the soft-projection operator are selected to maximize a post-processing SINR.

    摘要翻译： 干扰消除器包括被配置为通过组合软和/或硬估计的干扰来产生CIV的复合干扰矢量（CIV）发生器，被配置用于产生软投影运算符的干扰消除运算符以及被配置用于 执行接收的基带信号的软投影以输出干扰消除信号。 选择软投影算子中使用的权重以最大化后处理SINR。

    Method and system for multi-user detection using two-stage processing
    9.
    发明授权
    Method and system for multi-user detection using two-stage processing 失效
    使用两级处理的多用户检测方法和系统

    公开(公告)号：US08615030B2

    公开(公告)日：2013-12-24

    申请号：US12435039

    申请日：2009-05-04

    申请人： Farrokh Abrishamkar ,  Yingqun Yu ,  Michael McCloud ,  Divaydeep Sikri

    发明人： Farrokh Abrishamkar ,  Yingqun Yu ,  Michael McCloud ,  Divaydeep Sikri

    IPC分类号： H04B1/7105

    CPC分类号： H04B1/71052

    摘要： Systems and methods for multi-user detection are provided. In one aspect of the disclosure, an apparatus is provided. The apparatus comprises a processing unit configured to process a plurality of received chips into a plurality of received symbols for a plurality of users. The apparatus further comprises a computation unit configured to compute a multi-user matrix relating a plurality of user symbols for the plurality of users to the plurality of received symbols and a detection unit configured to detect the plurality of user symbols for the plurality of users using the computed multi-user matrix and the plurality of received symbols.

    摘要翻译： 提供了多用户检测的系统和方法。 在本公开的一个方面，提供一种装置。 该装置包括：处理单元，被配置为将多个接收到的码片处理为多个用户的多个接收符号。 所述装置还包括计算单元，被配置为计算将所述多个用户的多个用户符号与所述多个接收到的符号相关联的多用户矩阵;以及检测单元，被配置为使用所述多个用户矩阵来检测所述多个用户的所述多个用户符号 所计算的多用户矩阵和多个接收符号。