Method of identifying a precoding matrix corresponding to a wireless network channel and method of approximating a capacity of a wireless network channel in a wireless network
    1.
    发明申请
    Method of identifying a precoding matrix corresponding to a wireless network channel and method of approximating a capacity of a wireless network channel in a wireless network 有权
    识别对应于无线网络信道的预编码矩阵的方法和近似无线网络中的无线网络信道的容量的方法

    公开(公告)号:US20110069773A1

    公开(公告)日:2011-03-24

    申请号:US12586620

    申请日:2009-09-23

    IPC分类号: H04B7/02

    摘要: A method of identifying a precoding matrix corresponding to a wireless network channel comprises the steps of identifying a capacity metric that includes an identity matrix, approximating the capacity metric using an approximation metric that ignores the identity matrix, using the approximation metric to search over all matrices in a matrix codebook in order to identify a particular precoding matrix that increases a capacity of the wireless network channel, and transmitting across the wireless network channel a matrix index that corresponds to the particular precoding matrix. Additional techniques for identifying precoding matrices are also described herein, as is a method of approximating a capacity of a wireless network channel in a wireless network.

    摘要翻译: 识别与无线网络信道相对应的预编码矩阵的方法包括以下步骤:使用近似度量来搜索所有矩阵来识别包括单位矩阵的容量度量,使用忽略单位矩阵的近似度量逼近容量度量 在矩阵码本中,为了识别增加无线网络信道的容量的特定预编码矩阵,以及在无线网络信道上发送对应于特定预编码矩阵的矩阵索引。 本文还描述了用于识别预编码矩阵的附加技术,以及近似无线网络中的无线网络信道的容量的方法。

    Method of identifying a precoding matrix corresponding to a wireless network channel and method of approximating a capacity of a wireless network channel in a wireless network
    2.
    发明授权
    Method of identifying a precoding matrix corresponding to a wireless network channel and method of approximating a capacity of a wireless network channel in a wireless network 有权
    识别对应于无线网络信道的预编码矩阵的方法和近似无线网络中的无线网络信道的容量的方法

    公开(公告)号:US08411783B2

    公开(公告)日:2013-04-02

    申请号:US12586620

    申请日:2009-09-23

    IPC分类号: H04L1/02

    摘要: A method of identifying a precoding matrix corresponding to a wireless network channel comprises the steps of identifying a capacity metric that includes an identity matrix, approximating the capacity metric using an approximation metric that ignores the identity matrix, using the approximation metric to search over all matrices in a matrix codebook in order to identify a particular precoding matrix that increases a capacity of the wireless network channel, and transmitting across the wireless network channel a matrix index that corresponds to the particular precoding matrix. Additional techniques for identifying precoding matrices are also described herein, as is a method of approximating a capacity of a wireless network channel in a wireless network.

    摘要翻译: 识别与无线网络信道相对应的预编码矩阵的方法包括以下步骤:使用近似度量来搜索所有矩阵来识别包括单位矩阵的容量度量,使用忽略单位矩阵的近似度量逼近容量度量 在矩阵码本中,为了识别增加无线网络信道的容量的特定预编码矩阵,以及在无线网络信道上发送对应于特定预编码矩阵的矩阵索引。 本文还描述了用于识别预编码矩阵的附加技术,以及近似无线网络中的无线网络信道的容量的方法。

    NOISE ESTIMATION FILTER
    3.
    发明申请
    NOISE ESTIMATION FILTER 失效
    噪声估计滤波器

    公开(公告)号:US20130003802A1

    公开(公告)日:2013-01-03

    申请号:US13174327

    申请日:2011-06-30

    IPC分类号: H04L27/28 H04B17/00

    摘要: A noise estimation filter for an orthogonal frequency-division multiplexed (OFDM) system can include a filter bank module, a coefficient squaring module, and a summing module. The filter bank module can multiply a unitary vector by an OFDM signal vector to generate scalar products of the OFDM signal vector. The coefficient squaring module can square the scalar products and weight the scalar products to generate a plurality of weighted single estimates. The coefficient squaring module can include a squaring module for squaring the scalar product to generate a plurality of single estimates and a coefficient multiplication module for weighting each of the single estimates with a noise coefficient forming a plurality of weighted single estimates. The summing module can sum the weighted single estimates to generate a noise and interference power estimate.

    摘要翻译: 用于正交频分复用(OFDM)系统的噪声估计滤波器可以包括滤波器组模块,系数平方模块和求和模块。 滤波器组模块可以通过OFDM信号向量乘以单一矢量,以产生OFDM信号矢量的标量积。 系数平方模块可以对标量积进行平方并加权标量积以产生多个加权单个估计。 系数平方模块可以包括用于平方标量积以产生多个单个估计的平方模块和用于对形成多个加权单个估计值的噪声系数对每个单个估计进行加权的系数乘法模块。 求和模块可以对加权的单个估计进行求和以产生噪声和干扰功率估计。

    Channel estimation processing for performance improvement in low SNR regime
    4.
    发明授权
    Channel estimation processing for performance improvement in low SNR regime 有权
    信道估计处理,用于低信噪比系统的性能改进

    公开(公告)号:US09094241B2

    公开(公告)日:2015-07-28

    申请号:US13995705

    申请日:2011-12-28

    IPC分类号: H04L27/06 H04L25/02

    摘要: Disclosed is an improved channel estimation by post-processing of the channel response that is generated by a Golay correlator The processing is done using time-domain operations such as gating and filtering. Gating is performed on the estimated channel response taps in order to reduce the noise level. Pre-filtering the channel response through a filter matched to the transmitted pulse-shape improves the probability of detecting the channel peaks. Post-filtering the processed channel impulse response to eliminate the high frequency effects that are added by the windowing and gating operations.

    摘要翻译: 公开了通过后处理由格雷相关器产生的信道响应的改进的信道估计。该处理使用诸如门控和滤波的时域操作来完成。 对估计的信道响应抽头进行门控,以降低噪声水平。 通过与发送的脉冲形状匹配的滤波器对信道响应进行预滤波,提高了检测信道峰值的可能性。 对经处理的信道脉冲响应进行后处理,以消除由窗口和门控操作添加的高频效应。

    Noise estimation filter
    6.
    发明授权
    Noise estimation filter 失效
    噪声估计滤波器

    公开(公告)号:US08675720B2

    公开(公告)日:2014-03-18

    申请号:US13174327

    申请日:2011-06-30

    IPC分类号: H04B3/46 H04B17/00 H04Q1/20

    摘要: A noise estimation filter for an orthogonal frequency-division multiplexed (OFDM) system can include a filter bank module, a coefficient squaring module, and a summing module. The filter bank module can multiply a unitary vector by an OFDM signal vector to generate scalar products of the OFDM signal vector. The coefficient squaring module can square the scalar products and weight the scalar products to generate a plurality of weighted single estimates. The coefficient squaring module can include a squaring module for squaring the scalar product to generate a plurality of single estimates and a coefficient multiplication module for weighting each of the single estimates with a noise coefficient forming a plurality of weighted single estimates. The summing module can sum the weighted single estimates to generate a noise and interference power estimate.

    摘要翻译: 用于正交频分复用(OFDM)系统的噪声估计滤波器可以包括滤波器组模块,系数平方模块和求和模块。 滤波器组模块可以通过OFDM信号向量乘以单一矢量,以产生OFDM信号矢量的标量积。 系数平方模块可以对标量积进行平方并加权标量积以产生多个加权单个估计。 系数平方模块可以包括用于平方标量积以产生多个单个估计的平方模块和用于对形成多个加权单个估计值的噪声系数对每个单个估计进行加权的系数乘法模块。 求和模块可以对加权的单个估计进行求和以产生噪声和干扰功率估计。

    System, method and device of interference mitigation in wireless communication
    7.
    发明申请
    System, method and device of interference mitigation in wireless communication 失效
    无线通信中干扰减轻的系统,方法和设备

    公开(公告)号:US20070070932A1

    公开(公告)日:2007-03-29

    申请号:US11236520

    申请日:2005-09-28

    IPC分类号: H04Q7/00

    CPC分类号: H04L25/067

    摘要: Embodiments of the present invention provide a method, apparatus and system of interference mitigation in wireless communication. In some demonstrative embodiments the method may include determining one or more factors to be applied to one or more likelihood ratio values of one or more current symbols received by a station over one or more communication subcarriers, respectively, based on one or more sets of estimated error values, respectively, wherein the set of error values corresponds to a plurality of previous symbols received over the subcarrier. In some demonstrative embodiments the method may include determining the likelihood ratio value based on a probability that the current symbol includes interference caused by one or more other stations transmitting over the subcarrier. Other embodiments are described and claimed.

    摘要翻译: 本发明的实施例提供了一种无线通信中的干扰减轻的方法,装置和系统。 在一些说明性实施例中,该方法可以包括基于一个或多个估计的集合来确定一个或多个要被应用于由一个或多个通信子载波上的站接收的一个或多个当前符号的似然比值的一个或多个似然比值 误差值,其中所述一组误差值对应于通过所述子载波接收的多个先前码元。 在一些说明性实施例中,该方法可以包括基于当前符号包括由一个或多个其它站在子载波上发送而引起的干扰的概率来确定似然比值。 描述和要求保护其他实施例。

    CHANNEL ESTIMATION PROCESSING FOR PERFORMANCE IMPROVEMENT IN LOW SNR REGIME
    8.
    发明申请
    CHANNEL ESTIMATION PROCESSING FOR PERFORMANCE IMPROVEMENT IN LOW SNR REGIME 有权
    信道估计处理在低信噪比方面的性能改进

    公开(公告)号:US20130322583A1

    公开(公告)日:2013-12-05

    申请号:US13995705

    申请日:2011-12-28

    IPC分类号: H04L25/02

    摘要: Disclosed is an improved channel estimation by post-processing of the channel response that is generated by a Golay correlator The processing is done using time-domain operations such as gating and filtering. Gating is performed on the estimated channel response taps in order to reduce the noise level. Pre-filtering the channel response through a filter matched to the transmitted pulse-shape improves the probability of detecting the channel peaks. Post-filtering the processed channel impulse response to eliminate the high frequency effects that are added by the windowing and gating operations.

    摘要翻译: 公开了通过后处理由格雷相关器产生的信道响应的改进的信道估计。该处理使用诸如门控和滤波的时域操作来完成。 对估计的信道响应抽头进行门控,以降低噪声水平。 通过与发送的脉冲形状匹配的滤波器对信道响应进行预滤波,提高了检测信道峰值的可能性。 对经处理的信道脉冲响应进行后处理,以消除由窗口和门控操作添加的高频效应。

    System, method and device of interference mitigation in wireless communication
    10.
    发明授权
    System, method and device of interference mitigation in wireless communication 失效
    无线通信中干扰减轻的系统,方法和设备

    公开(公告)号:US07474640B2

    公开(公告)日:2009-01-06

    申请号:US11236520

    申请日:2005-09-28

    IPC分类号: H04Q7/00

    CPC分类号: H04L25/067

    摘要: Embodiments of the present invention provide a method, apparatus and system of interference mitigation in wireless communication. In some demonstrative embodiments the method may include determining one or more factors to be applied to one or more likelihood ratio values of one or more current symbols received by a station over one or more communication subcarriers, respectively, based on one or more sets of estimated error values, respectively, wherein the set of error values corresponds to a plurality of previous symbols received over the subcarrier. In some demonstrative embodiments the method may include determining the likelihood ratio value based on a probability that the current symbol includes interference caused by one or more other stations transmitting over the subcarrier. Other embodiments are described and claimed.

    摘要翻译: 本发明的实施例提供了一种无线通信中的干扰减轻的方法,装置和系统。 在一些说明性实施例中,该方法可以包括基于一个或多个估计的集合来确定一个或多个要被应用于由一个或多个通信子载波上的站接收的一个或多个当前符号的似然比值的一个或多个似然比值 误差值,其中所述一组误差值对应于通过所述子载波接收的多个先前码元。 在一些说明性实施例中,该方法可以包括基于当前符号包括由一个或多个其他站在子载波上发送的干扰引起的干扰的概率来确定似然比值。 描述和要求保护其他实施例。