公开(公告)号：US09160389B2

公开(公告)日：2015-10-13

申请号：US14351556

申请日：2011-10-19

申请人： Zhiheng Guo ,  Hai Wang ,  Ruiqi Zhang

发明人： Zhiheng Guo ,  Hai Wang ,  Ruiqi Zhang

IPC分类号： H04B7/00 ,  H04B1/16 ,  H04B7/08 ,  H04B7/10 ,  H04B7/06

CPC分类号： H04B1/16 ,  H04B7/0691 ,  H04B7/0857 ,  H04B7/10

摘要： A hybrid combining method in a receiver is provided, and the method includes that wideband combining, e.g. using a maximum ratio combining (MRC) or an interference rejection combing (IRC) process, to combine signals distributed over a first plurality of subcarrier frequencies from antennas in the same polarization direction is performed, resulting in a combined signal for each polarization direction that is distributed over a smaller number of subcarrier frequencies, then a two-port narrowband IRC is done of these wideband combined signals for the two polarization directions, resulting in a diversity combined signal.

摘要翻译： 提供了一种在接收机中的混合组合方法，并且该方法包括宽带组合。 使用最大比合并（MRC）或干扰抑制合成（IRC）处理来组合在相同偏振方向的天线上分布在第一多个子载波频率上的信号，导致用于每个偏振方向的组合信号， 分布在较小数量的子载波频率上，然后对两个极化方向的这些宽带组合信号进行两端口窄带IRC，从而产生分集组合信号。

公开(公告)号：US20140211892A1

公开(公告)日：2014-07-31

申请号：US13880900

申请日：2010-10-25

申请人： Zhiheng Guo ,  Ruiqi Zhang ,  Hai Wang

发明人： Zhiheng Guo ,  Ruiqi Zhang ,  Hai Wang

IPC分类号： H04B1/12 ,  H04L25/02

CPC分类号： H04B1/12 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/0232 ,  H04L27/2647

摘要： The present invention relates to a receiving node, and to a related method of adjusting a frequency domain channel estimate in a receiving node of a wireless communication system using Orthogonal Frequency Division Multiplexing. The method comprises estimating (210) a phase rotation of the frequency domain channel estimate, and compensating (220) for the estimated phase rotation in the frequency domain channel estimate. It also comprises transforming (230) the compensated frequency domain channel estimate into a time domain channel estimate, filtering (240) the time domain channel estimate to suppress noise, transforming (250) the filtered time domain channel estimate back into a noise suppressed frequency domain channel estimate, and adding (260) the estimated phase rotation in the noise suppressed frequency domain channel estimate to achieve an adjusted and improved frequency domain channel estimate.

摘要翻译： 本发明涉及一种接收节点，以及一种使用正交频分复用技术在无线通信系统的接收节点中调整频域信道估计的相关方法。 该方法包括估计（210）频域信道估计的相位旋转，以及对频域信道估计中的估计相位旋转进行补偿（220）。 它还包括将经补偿的频域信道估计转换（230）到时域信道估计中，对时域信道估计进行滤波（240）以抑制噪声，将经过滤波的时域信道估计转换（250）成为噪声抑制频域 信道估计，并且在噪声抑制频域信道估计中相加（260）估计的相位旋转，以实现调整和改进的频域信道估计。

公开(公告)号：US08462904B2

公开(公告)日：2013-06-11

申请号：US13031812

申请日：2011-02-22

申请人： Zhiheng Guo ,  Hai Wang ,  Ruiqi Zhang

发明人： Zhiheng Guo ,  Hai Wang ,  Ruiqi Zhang

IPC分类号： H04B1/10

CPC分类号： H04L25/024 ,  H04L25/0218 ,  H04L25/022 ,  H04L27/2647

摘要： A noisy frequency-domain channel estimate enhancer includes an over-sampler configured to transform the noisy frequency-domain channel estimate into a time-domain channel estimate that is virtually over-sampled by an integer factor m. The over-sampler is connected to a de-interleaver configured to divide the time-domain channel estimate into m de-interleaved sub-vectors. The de-interleaver is connected to a suppressor configured to suppress noisy taps from each de-interleaved sub-vectors to form m noise suppressed sub-vectors. The suppressor is connected to a selector configured to select a noise suppressed sub-vector associated with a highest signal-to-noise ratio. The selector is connected to a discrete Fourier transformer configured to transform the selected noise suppressed sub-vector into a noise suppressed preliminary frequency-domain channel estimate. The discrete Fourier transformer is connected to a phase-shifter configured to phase-adjust the taps of the noise suppressed preliminary frequency-domain channel estimate to form an enhanced frequency-domain channel estimate.

摘要翻译： 噪声频域信道估计增强器包括过采样器，其被配置为将噪声频域信道估计转换为实际上被整数因子m过采样的时域信道估计。 过采样器连接到解交织器，其被配置为将时域信道估计分割成m个去交织的子向量。 解交织器连接到抑制器，该抑制器被配置为抑制来自每个去交织的子向量的噪声抽头以形成m个噪声抑制的子向量。 抑制器连接到选择器，其被配置为选择与最高信噪比相关联的噪声抑制子矢量。 选择器连接到配置成将所选择的噪声抑制子矢量变换成噪声抑制的初步频域信道估计的离散付里叶变换器。 离散傅立叶变换器连接到移相器，其被配置为相位调整噪声抑制的初步频域信道估计的抽头，以形成增强的频域信道估计。

公开(公告)号：US08848778B2

公开(公告)日：2014-09-30

申请号：US13990455

申请日：2010-12-08

申请人： Zhiheng Guo ,  Hai Wang ,  Ruiqi Zhang

发明人： Zhiheng Guo ,  Hai Wang ,  Ruiqi Zhang

IPC分类号： H03H7/30 ,  H04L25/03 ,  H04L25/02 ,  H04B7/08

CPC分类号： H04L25/03891 ,  H04B7/0848 ,  H04L25/0228 ,  H04L25/03968

摘要： The present invention relates to a method for generating impairment covariances for equalization in a receiver of a wireless communication system, as well as an covariance estimator, a receiver and a wireless communication system associated therewith, where the receiver is equipped with multiple antennas, and an impairment covariance matrix is used to calculate equalization weighting vector for signals transmitted by a transmitter, the method comprising the steps of: calculating a raw impairment covariance estimate between a first antenna and a second antenna of the multiple antennas on each of subcarriers allocated to the transmitter in frequency domain, transforming the raw impairment covariance estimates into time domain, masking the transformed impairment covariance estimates by a triangle window with a width defined by a maximum delay spread, determining a threshold based on the transformed impairment covariance estimates for the subcarriers and thresholding the masked impairment covariance estimates with the determined threshold, and transforming the thresholded impairment covariance estimates into frequency domain to form an impairment covariance matrix for calculating the equalization weighting vector. The impairment covariance estimation according to the present invention provides a performance improvement in equalization.

摘要翻译： 本发明涉及一种用于在无线通信系统的接收机中产生用于均衡的损害协方差的方法，以及与其相关联的协方差估计器，接收机和无线通信系统，其中接收机配备有多个天线，并且 减法协方差矩阵用于计算由发射机发射的信号的均衡加权矢量，该方法包括以下步骤：在分配给发射机的每个子载波上计算多个天线的第一天线与第二天线之间的原始损伤协方差估计 在频域中将原始损害协方差估计转换为时域，通过具有由最大延迟扩展定义的宽度的三角形窗口来掩蔽变换的损害协方差估计，基于子载波的变换的损害协方差估计确定阈值， 掩蔽损伤 确定阈值的协方差估计，并将阈值的损害协方差估计变换为频域以形成用于计算均衡加权向量的损害协方差矩阵。 根据本发明的损伤协方差估计提供了均衡的性能改进。

公开(公告)号：US20130243069A1

公开(公告)日：2013-09-19

申请号：US13990455

申请日：2010-12-08

申请人： Zhiheng Guo ,  Hai Wang ,  Ruiqi Zhang

发明人： Zhiheng Guo ,  Hai Wang ,  Ruiqi Zhang

IPC分类号： H04L25/03

CPC分类号： H04L25/03891 ,  H04B7/0848 ,  H04L25/0228 ,  H04L25/03968

摘要： The present invention relates to a method for generating impairment covariances for equalization in a receiver of a wireless communication system, as well as an covariance estimator, a receiver and a wireless communication system associated therewith, where the receiver is equipped with multiple antennas, and an impairment covariance matrix is used to calculate equalization weighting vector for signals transmitted by a transmitter, the method comprising the steps of: calculating a raw impairment covariance estimate between a first antenna and a second antenna of the multiple antennas on each of subcarriers allocated to the transmitter in frequency domain, transforming the raw impairment covariance estimates into time domain, masking the transformed impairment covariance estimates by a triangle window with a width defined by a maximum delay spread, determining a threshold based on the transformed impairment covariance estimates for the subcarriers and thresholding the masked impairment covariance estimates with the determined threshold, and transforming the thresholded impairment covariance estimates into frequency domain to form an impairment covariance matrix for calculating the equalization weighting vector. The impairment covariance estimation according to the present invention provides a the masked estimates performance improvement in equalization.

摘要翻译： 本发明涉及一种用于在无线通信系统的接收机中产生用于均衡的损害协方差的方法，以及与其相关联的协方差估计器，接收机和无线通信系统，其中接收机配备有多个天线，并且 减法协方差矩阵用于计算由发射机发射的信号的均衡加权矢量，该方法包括以下步骤：在分配给发射机的每个子载波上计算多个天线的第一天线与第二天线之间的原始损伤协方差估计 在频域中将原始损害协方差估计转换为时域，通过具有由最大延迟扩展定义的宽度的三角形窗口来掩蔽变换的损害协方差估计，基于子载波的变换的损害协方差估计确定阈值， 掩蔽损伤 确定阈值的协方差估计，并将阈值的损害协方差估计变换为频域以形成用于计算均衡加权向量的损害协方差矩阵。 根据本发明的损伤协方差估计提供了均衡中的屏蔽估计性能改进。

公开(公告)号：US20110206169A1

公开(公告)日：2011-08-25

申请号：US13031812

申请日：2011-02-22

申请人： Zhiheng Guo ,  Hai Wang ,  Ruiqi Zhang

发明人： Zhiheng Guo ,  Hai Wang ,  Ruiqi Zhang

IPC分类号： H03D1/04

CPC分类号： H04L25/024 ,  H04L25/0218 ,  H04L25/022 ,  H04L27/2647

摘要： A noisy frequency-domain channel estimate enhancer includes an over-sampler configured to transform the noisy frequency-domain channel estimate into a time-domain channel estimate that is virtually over-sampled by an integer factor m. The over-sampler is connected to a de-interleaver configured to divide the time-domain channel estimate into m de-interleaved sub-vectors. The de-interleaver is connected to a suppressor configured to suppress noisy taps from each de-interleaved sub-vectors to form m noise suppressed sub-vectors. The suppressor is connected to a selector configured to select a noise suppressed sub-vector associated with a highest signal-to-noise ratio. The selector is connected to a discrete Fourier transformer configured to transform the selected noise suppressed sub-vector into a noise suppressed preliminary frequency-domain channel estimate. The discrete Fourier transformer is connected to a phase-shifter configured to phase-adjust the taps of the noise suppressed preliminary frequency-domain channel estimate to form an enhanced frequency-domain channel estimate.

摘要翻译： 噪声频域信道估计增强器包括过采样器，其被配置为将噪声频域信道估计转换为实际上被整数因子m过采样的时域信道估计。 过采样器连接到解交织器，其被配置为将时域信道估计分割成m个去交织的子向量。 解交织器连接到抑制器，该抑制器被配置为抑制来自每个去交织的子向量的噪声抽头以形成m个噪声抑制的子向量。 抑制器连接到选择器，其被配置为选择与最高信噪比相关联的噪声抑制子矢量。 选择器连接到配置成将所选择的噪声抑制子矢量变换成噪声抑制的初步频域信道估计的离散付里叶变换器。 离散傅立叶变换器连接到移相器，其被配置为相位调整噪声抑制的初步频域信道估计的抽头，以形成增强的频域信道估计。

公开(公告)号：US20140242934A1

公开(公告)日：2014-08-28

申请号：US14351556

申请日：2011-10-19

申请人： Zhiheng Guo ,  Hai Wang ,  Ruiqi Zhang

发明人： Zhiheng Guo ,  Hai Wang ,  Ruiqi Zhang

IPC分类号： H04B1/16

CPC分类号： H04B1/16 ,  H04B7/0691 ,  H04B7/0857 ,  H04B7/10

摘要： A hybrid combining method in a receiver is provided, and the method includes that wideband combining, e.g. using a maximum ratio combining (MRC) or an interference rejection combing (IRC) process, to combine signals distributed over a first plurality of subcarrier frequencies from antennas in the same polarization direction is performed, resulting in a combined signal for each polarization direction that is distributed over a smaller number of subcarrier frequencies, then a two-port narrowband IRC is done of these wideband combined signals for the two polarization directions, resulting in a diversity combined signal.

摘要翻译： 提供了一种在接收机中的混合组合方法，并且该方法包括宽带组合。 使用最大比合并（MRC）或干扰抑制合成（IRC）处理来组合在相同偏振方向的天线上分布在第一多个子载波频率上的信号，导致用于每个偏振方向的组合信号， 分布在较小数量的子载波频率上，然后对两个极化方向的这些宽带组合信号进行两端口窄带IRC，从而产生分集组合信号。

公开(公告)号：US09685702B2

公开(公告)日：2017-06-20

申请号：US13991990

申请日：2010-12-17

申请人： Yang Hu ,  David Astely ,  Zhiheng Guo ,  Muhammad Imadur Rahman ,  Hai Wang ,  Ruiqi Zhang

发明人： Yang Hu ,  David Astely ,  Zhiheng Guo ,  Muhammad Imadur Rahman ,  Hai Wang ,  Ruiqi Zhang

IPC分类号： H01Q3/00 ,  G01S3/16 ,  H01Q3/40 ,  H04B7/0408 ,  H04B7/0413 ,  H04B7/06 ,  H04B7/10 ,  H04B7/04

CPC分类号： H01Q3/40 ,  H04B7/0408 ,  H04B7/0413 ,  H04B7/0469 ,  H04B7/0617 ,  H04B7/0671 ,  H04B7/0686 ,  H04B7/0691 ,  H04B7/10

摘要： The invention discloses a beamforming method for polarized antenna array consisting of a plurality of antenna elements, applied to single layer beamforming or dual layer beamforming, which includes the steps: determining (201) first beamforming weights for phase compensation among the antenna elements within each polarization direction; determining (202) second beamforming weights for phase compensation between equivalent channels of two polarization directions; and calculating (203) hybrid beamforming weights as product of the first beamforming weights and the second beamforming weights. A beamforming apparatus for polarized antenna array is also provided in the invention as well as a radio communication device and a system thereof. With the invention, the single-layer and dual-layer beamforming weights are determined for the cross-polarized antenna array without requiring full channel knowledge or the aid of PMI. Computation complexity is lowered and full power amplifier utilization can be achieved.

公开(公告)号：US09001935B2

公开(公告)日：2015-04-07

申请号：US13880900

申请日：2010-10-25

申请人： Zhiheng Guo ,  Ruiqi Zhang ,  Hai Wang

发明人： Zhiheng Guo ,  Ruiqi Zhang ,  Hai Wang

IPC分类号： H04L27/06 ,  H04B1/12 ,  H04L5/00 ,  H04L25/02 ,  H04L27/26

CPC分类号： H04B1/12 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/0232 ,  H04L27/2647

摘要： The present invention relates to a receiving node, and to a related method of adjusting a frequency domain channel estimate in a receiving node of a wireless communication system using Orthogonal Frequency Division Multiplexing. The method comprises estimating (210) a phase rotation of the frequency domain channel estimate, and compensating (220) for the estimated phase rotation in the frequency domain channel estimate. It also comprises transforming (230) the compensated frequency domain channel estimate into a time domain channel estimate, filtering (240) the time domain channel estimate to suppress noise, transforming (250) the filtered time domain channel estimate back into a noise suppressed frequency domain channel estimate, and adding (260) the estimated phase rotation in the noise suppressed frequency domain channel estimate to achieve an adjusted and improved frequency domain channel estimate.

摘要翻译： 本发明涉及一种接收节点，以及一种使用正交频分复用技术在无线通信系统的接收节点中调整频域信道估计的相关方法。 该方法包括估计（210）频域信道估计的相位旋转，以及对频域信道估计中的估计相位旋转进行补偿（220）。 它还包括将经补偿的频域信道估计转换（230）到时域信道估计中，对时域信道估计进行滤波（240）以抑制噪声，将经过滤波的时域信道估计转换（250）成为噪声抑制频域 信道估计，并且在噪声抑制频域信道估计中相加（260）估计的相位旋转，以实现调整和改进的频域信道估计。

公开(公告)号：US20130257655A1

公开(公告)日：2013-10-03

申请号：US13991990

申请日：2010-12-17

申请人： Yang Hu ,  David Astely ,  Zhiheng Guo ,  Muhammad Imadur Rahman ,  Hai Wang ,  Ruiqi Zhang

发明人： Yang Hu ,  David Astely ,  Zhiheng Guo ,  Muhammad Imadur Rahman ,  Hai Wang ,  Ruiqi Zhang

IPC分类号： H01Q3/40

CPC分类号： H01Q3/40 ,  H04B7/0408 ,  H04B7/0413 ,  H04B7/0469 ,  H04B7/0617 ,  H04B7/0671 ,  H04B7/0686 ,  H04B7/0691 ,  H04B7/10

摘要： The invention discloses a beamforming method for polarized antenna array consisting of a plurality of antenna elements, applied to single layer beamforming or dual layer beamforming, which includes the steps: determining (201) first beamforming weights for phase compensation among the antenna elements within each polarization direction; determining (202) second beamforming weights for phase compensation between equivalent channels of two polarization directions; and calculating (203) hybrid beamforming weights as product of the first beamforming weights and the second beamforming weights. A beamforming apparatus for polarized antenna array is also provided in the invention as well as a radio communication device and a system thereof. With the invention, the single-layer and dual-layer beamforming weights are determined for the cross-polarized antenna array without requiring full channel knowledge or the aid of PMI. Computation complexity is lowered and full power amplifier utilization can be achieved.

摘要翻译： 本发明公开了一种用于由多个天线元件组成的极化天线阵列的波束成形方法，其应用于单层波束成形或双层波束成形，其包括以下步骤：确定（201）每个极化内的天线元件之间的相位补偿的第一波束成形加权 方向; 确定（202）第二波束形成权重用于两个偏振方向的等效信道之间的相位补偿; 以及计算（203）混合波束形成权重作为所述第一波束成形权重和所述第二波束成形权重的乘积。 在本发明中还提供了一种用于极化天线阵列的波束成形装置以及无线电通信装置及其系统。 利用本发明，对于交叉极化天线阵列确定单层和双层波束成形权重，而不需要全渠道知识或PMI的帮助。 计算复杂度降低，可实现全功率放大器利用。