公开(公告)号：US20150236872A1

公开(公告)日：2015-08-20

申请号：US14421783

申请日：2013-08-16

Applicant: ZTE CORPORATION

Inventor： Gaocai Xiong ,  Hongfeng Qin ,  Yue Xiao ,  Hongzhi Zhao

IPC: H04L25/02 ,  H04L27/26 ,  H04B7/04 ,  H04L5/00

CPC classification number: H04L25/025 ,  H04B7/0413 ,  H04L5/005 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/0228 ,  H04L25/0242 ,  H04L25/0256 ,  H04L27/265

Abstract: Disclosed are a method and device for estimating a channel in a multiple-receiving antenna system. The method comprises: a channel estimation is performed on a received pilot signal by using a least square channel estimation algorithm to obtain an estimation value HLS; an N′-dimensional channel autocorrelation matrix formula (I) and a channel frequency domain autocorrelation matrix Ri from a transmitting antenna i to any receiving antenna are acquired, and a weight matrix W which is descrambled and denoised is calculated, wherein i=1, 2, . . . , NT, and NT is the number of antennae at a transmitting end; the estimation value HLS is corrected by using the weight matrix W to obtain a corrected estimation value HP-LMMSE. The method and device of the disclosure may obtain the performance as close as possible to the LMMSE technology through less prior statistic information, and have a simple implementation manner.

Abstract translation: 公开了一种用于估计多接收天线系统中的信道的方法和装置。 该方法包括：通过使用最小二乘信道估计算法对接收到的导频信号执行信道估计，以获得估计值HLS; 获取N'维信道自相关矩阵公式（I）和从发射天线i到任何接收天线的信道频域自相关矩阵Ri，并且计算被解扰和去噪的权重矩阵W，其中i = 1， 2，。 。 。 NT和NT是发送端的天线数; 通过使用权重矩阵W来校正估计值HLS，以获得校正估计值HP-LMMSE。 本公开的方法和装置可以通过较少的现有统计信息获得尽可能接近LMMSE技术的性能，并且具有简单的实现方式。

公开(公告)号：US09231788B2

公开(公告)日：2016-01-05

申请号：US14421783

申请日：2013-08-16

Applicant: ZTE CORPORATION

Inventor： Gaocai Xiong ,  Hongfeng Qin ,  Yue Xiao ,  Hongzhi Zhao

IPC: H04L27/06 ,  H04L25/02 ,  H04L5/00 ,  H04L27/26 ,  H04B7/04

CPC classification number: H04L25/025 ,  H04B7/0413 ,  H04L5/005 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/0228 ,  H04L25/0242 ,  H04L25/0256 ,  H04L27/265

Abstract: Disclosed are a method and device for estimating a channel in a multiple-receiving antenna system. The method comprises: a channel estimation is performed on a received pilot signal by using a least square channel estimation algorithm to obtain an estimation value HLS; an N′-dimensional channel autocorrelation matrix formula (I) and a channel frequency domain autocorrelation matrix Ri from a transmitting antenna i to any receiving antenna are acquired, and a weight matrix W which is descrambled and denoised is calculated, wherein i=1, 2, . . . , NT, and NT is the number of antennae at a transmitting end; the estimation value HLS is corrected by using the weight matrix W to obtain a corrected estimation value HP-LMMSE. The method and device of the disclosure may obtain the performance as close as possible to the LMMSE technology through less prior statistic information, and have a simple implementation manner.

Abstract translation: 公开了一种用于估计多接收天线系统中的信道的方法和装置。 该方法包括：通过使用最小二乘信道估计算法对接收到的导频信号执行信道估计，以获得估计值HLS; 获取N'维信道自相关矩阵公式（I）和从发射天线i到任何接收天线的信道频域自相关矩阵Ri，并且计算被解扰和去噪的权重矩阵W，其中i = 1， 2，。 。 。 NT和NT是发送端的天线数; 通过使用权重矩阵W来校正估计值HLS，以获得校正估计值HP-LMMSE。 本公开的方法和装置可以通过较少的现有统计信息获得尽可能接近LMMSE技术的性能，并且具有简单的实现方式。

公开(公告)号：US20170230219A1

公开(公告)日：2017-08-10

申请号：US15519311

申请日：2015-05-15

Applicant: ZTE Corporation

Inventor： Hongfeng Qin ,  Gaocai Xiong ,  Dengsheng Lin

IPC: H04L27/26 ,  H04W72/04 ,  H04B7/0456

CPC classification number: H04L27/2613 ,  H04B7/0456 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/0248 ,  H04L25/03993 ,  H04L27/2607 ,  H04L27/2628 ,  H04L27/265 ,  H04W72/0413 ,  H04W84/042

Abstract: A method and device for detecting a signal of an LTE uplink system in an interference condition. The method comprises: receiving baseband signals of M receiving antennas, and after fast Fourier transform, conducting demapping to obtain frequency-domain baseband signals; extracting a DMRS inserted in a received signal of each antenna, and then, calculating a channel gain hl,k of each receiving antenna; combining the baseband signals and the channel gains of the M receiving antennas to obtain a signal matrix Yk and a gain matrix Hk; calculating an interference noise covariance matrix Rk on each subcarrier; conducting interference pre-processing on a received signal on each combined subcarrier to obtain the received signal (1) and the channel gain (2) after the interference pre-processing, where D=Rk−1/2; and according to (3), conducting frequency-domain balancing on the received signal after the interference pre-processing.

公开(公告)号：US09172450B2

公开(公告)日：2015-10-27

申请号：US14406021

申请日：2013-08-20

Applicant: ZTE CORPORATION

Inventor： Hongfeng Qin ,  Gaocai Xiong ,  Yue Xiao ,  Hongzhi Zhao

IPC: H04B7/02 ,  H04B7/04

CPC classification number: H04B7/0478 ,  H04B7/0473 ,  H04L1/0631 ,  H04L25/03242 ,  H04L25/03318 ,  H04L25/03891 ,  H04L2025/0342

Abstract: Provided is a processing method and apparatus for performing space-time decoding on MIMO signals. The method includes: performing QR decomposition on a channel matrix H with a size of Nr×Nt in a MIMO system and performing an initialization operation, wherein Nt is the number of transmitting antennas and Nr is the number of receiving antennas; enumerating candidate constellation points of transmitting signals at each level of transmitting antennas according to an input parameter M=[M1, M2, . . . , MNt], a receiving signal y and a result of QR decomposition of H, wherein M is the number of the numerated candidate constellation points at each level, y=Hs+n; calculating increments of a Euclid distance due to addition of selection of a candidate constellation point at present level according to obtained candidate constellation points; and deciding and outputting space-time decoding according to the sum of calculated increments of Euclid distances of candidate constellation points at all levels.

Abstract translation: 提供了一种用于对MIMO信号执行空时解码的处理方法和装置。 该方法包括：在MIMO系统中对Nr×Nt大小的信道矩阵H执行QR分解，并执行初始化操作，其中Nt是发射天线的数量，Nr是接收天线的数量; 根据输入参数M = [M1，M2，...]来枚举在发射天线的每个等级的发射信号的候选星座点。 。 。 ，MNt]，接收信号y和H的QR分解结果，其中M是每个级别的所计算的候选星座点的数量，y = Hs + n; 计算由于根据获得的候选星座点添加当前级别的候选星座点的选择而导致的欧几里德距离的增量; 并根据所有级别的候选星座点的欧几里德距离的计算增量的总和来确定和输出空时解码。

公开(公告)号：US10129063B2

公开(公告)日：2018-11-13

申请号：US15519311

申请日：2015-05-15

Applicant: ZTE Corporation

Inventor： Hongfeng Qin ,  Gaocai Xiong ,  Dengsheng Lin

IPC: H04L27/26 ,  H04B7/0456 ,  H04W72/04 ,  H04W84/04

Abstract: A method and device for detecting a signal of an LTE uplink system in an interference condition. The method comprises: receiving baseband signals of M receiving antennas, and after fast Fourier transform, conducting demapping to obtain frequency-domain baseband signals; extracting a DMRS inserted in a received signal of each antenna, and then, calculating a channel gain hl,k of each receiving antenna; combining the baseband signals and the channel gains of the M receiving antennas to obtain a signal matrix Yk and a gain matrix Hk; calculating an interference noise covariance matrix Rk on each subcarrier; conducting interference pre-processing on a received signal on each combined subcarrier to obtain the received signal (1) and the channel gain (2) after the interference pre-processing, where D=Rk−1/2; and according to (3), conducting frequency-domain balancing on the received signal after the interference pre-processing.

公开(公告)号：US20150155924A1

公开(公告)日：2015-06-04

申请号：US14406021

申请日：2013-08-20

Applicant: ZTE CORPORATION

Inventor： Hongfeng Qin ,  Gaocai Xiong ,  Yue Xiao ,  Hongzhi Zhao

IPC: H04B7/04

CPC classification number: H04B7/0478 ,  H04B7/0473 ,  H04L1/0631 ,  H04L25/03242 ,  H04L25/03318 ,  H04L25/03891 ,  H04L2025/0342

Abstract: Provided is a processing method and apparatus for performing space-time decoding on MIMO signals. The method includes: performing QR decomposition on a channel matrix H with a size of Nr×Nt in a MIMO system and performing an initialization operation, wherein Nt is the number of transmitting antennas and Nr is the number of receiving antennas; enumerating candidate constellation points of transmitting signals at each level of transmitting antennas according to an input parameter M=[M1, M2, . . . , MNt], a receiving signal y and a result of the QR decomposition of the channel matrix H, wherein M is the number of the numerated candidate constellation points at each level, y=Hs+n calculating increments of a Euclid distance due to addition of selection of a candidate constellation point at present level according to obtained candidate constellation points; and deciding and outputting space-time decoding according to the sum of calculated increments of Euclid distances of candidate constellation points at all levels.

Abstract translation: 提供了一种用于对MIMO信号执行空时解码的处理方法和装置。 该方法包括：在MIMO系统中对Nr×Nt大小的信道矩阵H执行QR分解，并执行初始化操作，其中Nt是发射天线的数量，Nr是接收天线的数量; 根据输入参数M = [M1，M2，...]来枚举在发射天线的每个等级的发射信号的候选星座点。 。 。 ，MNt]，接收信号y和信道矩阵H的QR分解的结果，其中M是每个级别上的所计算的候选星座点的数量，y = Hs + n计算由于加法而产生的欧几里德距离的增量 根据获得的候选星座点选择当前级别的候选星座点; 并根据所有级别的候选星座点的欧几里德距离的计算增量的总和来确定和输出空时解码。