公开(公告)号：WO2013044447A1

公开(公告)日：2013-04-04

申请号：PCT/CN2011/080230

申请日：2011-09-27

Applicant: ST-ERICSSON SA ,  TANG, Zhixun ,  LI, Xie ,  ZHUANG, Liang

Inventor： TANG, Zhixun ,  LI, Xie ,  ZHUANG, Liang

IPC: H04B1/707

CPC classification number: H04J13/0077 ,  H04B1/707 ,  H04B1/7105 ,  H04B2201/70714 ,  H04J11/0046 ,  H04J11/005

Abstract: This invention relates to a method and an apparatus for code activation, and a computer program and a storage medium thereof. A combined channel impulse response for each code is calculated based on a channelization code, a scrambling code and a channel impulse response corresponding to the code; a statistical result of the correlations between each interference code and all user codes is obtained; an active interference code number is determined; the determined number of interference codes, are activated, wherein a selection of which interference codes to activate is based on the statistical result. In some embodiments of this invention, the interference codes having a close correlation with the user codes may be selected to be activated, thereby the performance of joint detection is improved. In some embodiments of this invention, the complexity of the subsequent joint detection will be remarkably reduced on the premise of ensuring the performance of the joint detection.

Abstract translation: 本发明涉及一种用于代码激活的方法和装置，以及其计算机程序及其存储介质。 基于对应于代码的信道化码，扰码和信道脉冲响应来计算每个码的组合信道脉冲响应; 获得每个干扰码与所有用户码之间的相关性的统计结果; 确定主动干扰码号; 所确定的干扰码数量被激活，其中选择要激活的干扰码是基于统计结果。 在本发明的一些实施例中，可以选择与用户代码紧密相关的干扰码来激活，从而提高联合检测的性能。 在本发明的一些实施例中，在确保联合检测的性能的前提下，随后联合检测的复杂性将显着降低。

公开(公告)号：WO2013053129A1

公开(公告)日：2013-04-18

申请号：PCT/CN2011/080775

申请日：2011-10-14

Applicant: ST-ERICSSON SA ,  TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping ,  ZHANG, Daijun

Inventor： TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping ,  ZHANG, Daijun

IPC: H04W24/02

CPC classification number: H04B1/12 ,  H04B1/7105 ,  H04B1/7107 ,  H04B2001/71077

Abstract: The present invention relates a method, apparatus, receiver, computer program for joint detection. In the method, it is firstly determined if whether a number of original active codes is beyond a predefined threshold or not, and when the number of the original active codes is beyond the predefined threshold and a strong interference code exists in the active codes corresponding to intra-frequency adjacent cells, it is to apply an interference cancellation to a receive signal, cancel MAI caused by a strong interference signal corresponding to the strong interference code, and perform a joint detection by utilizing a matched filtering result of a remaining signal after the interference cancellation for the joint detection. According to at least one embodiment of the present invention, when there is large interference in the intra-frequency adjacent cells and the number of the active codes is beyond a maximum threshold, the joint detection performance is improved.

Abstract translation: 本发明涉及用于联合检测的方法，装置，接收机，计算机程序。 在该方法中，首先确定多个原始活动代码是否超出预定义的阈值，并且当原始活动代码的数量超过预定义的阈值并且在对应于的活动代码中存在强干扰码时 频率相邻小区，则对接收信号应用干扰消除，取消对应于强干扰码的强干扰信号引起的MAI，并且通过利用后面的剩余信号的匹配滤波结果来执行联合检测 干扰消除用于联合检测。 根据本发明的至少一个实施例，当在频率内相邻小区中存在大的干扰并且有效代码的数量超过最大阈值时，提高了联合检测性能。

公开(公告)号：WO2013037107A1

公开(公告)日：2013-03-21

申请号：PCT/CN2011/079610

申请日：2011-09-14

Applicant: ST-ERICSSON SA ,  TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping

Inventor： TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping

IPC: H04B1/707

CPC classification number: H04L5/0073 ,  H04B1/7107 ,  H04B2201/709745 ,  H04L25/0202 ,  H04L25/0204

Abstract: The embodiment of the invention discloses a channel estimation method for a TD-SCDMA system. The channel estimation method comprises steps of: obtaining a coarse channel estimation of a channel l of an intra-frequency cell set by a single cell channel estimation algorithm; performing an interference cancellation on the coarse channel estimation to obtain a channel estimation; determining a channel environment according to the channel estimation; and determining a stop strategy for the interference cancellation according to the channel environment and controlling performing the interference cancellation according to the stop strategy. The embodiment of the invention also discloses a channel estimation apparatus for a TD-SCDMA system, a communication device and a computer program executing the channel estimation method.

Abstract translation: 本发明的实施例公开了一种用于TD-SCDMA系统的信道估计方法。 信道估计方法包括以下步骤：通过单个小区信道估计算法获得频率小区集合的信道l的粗略信道估计; 对粗略信道估计执行干扰消除以获得信道估计; 根据信道估计确定信道环境; 以及根据所述信道环境确定所述干扰消除的停止策略，并且根据所述停止策略来控制执行所述干扰消除。 本发明的实施例还公开了一种用于TD-SCDMA系统的信道估计装置，执行信道估计方法的通信装置和计算机程序。

公开(公告)号：WO2013044462A1

公开(公告)日：2013-04-04

申请号：PCT/CN2011/080279

申请日：2011-09-28

Applicant: ST-ERICSSON SA ,  TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping

Inventor： TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping

IPC: H04B1/707

CPC classification number: H04B1/7105 ,  H04B2201/709763

Abstract: The present invention relates to a method, an apparatus, a receiver, a computer program and a storage medium for joint detection. The method comprises: adjusting a ranking order of codes in a matched filtering result and a ranking order of column vectors in a system submatrix according to the power, performing the joint detection using an adjusted matched filtering result and an adjusted system submatrix, and acquiring demodulated signals corresponding to the codes. The codes having high power will be demodulated firstly, thus it ensures accuracy of demodulation, inhibits erroneous propagation effect and improves accuracy of the joint detection.

Abstract translation: 本发明涉及一种用于联合检测的方法，装置，接收机，计算机程序和存储介质。 该方法包括：根据功率调整匹配滤波结果中的码的排序顺序和系统子矩阵中的列向量的排序顺序，使用调整的匹配滤波结果和调整后的系统子矩阵进行联合检测，并获取解调的 与代码相对应的信号。 首先解调具有高功率的代码，从而确保解调精度，抑制错误的传播效果，提高关节检测精度。

公开(公告)号：WO2013040754A1

公开(公告)日：2013-03-28

申请号：PCT/CN2011/079876

申请日：2011-09-20

Applicant: ST-ERICSSON SA ,  TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping ,  ZHANG, Daijun

Inventor： TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping ,  ZHANG, Daijun

IPC: H04B1/7105 ,  H04J13/02

CPC classification number: H04B1/7105 ,  H04B1/7107 ,  H04B2201/70702

Abstract: A method, apparatus, receiver, computer program and storage medium for joint detection are disclosed. The joint detection method includes categorizing interference signals based on level of interference so as to obtain a strong interference signal, cancelling the strong interference signal from a received signal, and performing a joint detection by utilizing a matched filtering result of a remaining signal. In one embodiment, it is to firstly determine whether a strong interference codes corresponding to an intra-frequency adjacent cell exists in an active code list or not, recovering a strong interference signal transmitted by a Node B if the strong interference codes exists, applying an interference cancellation to a received signal received by a receiver so as to obtain a matched filtering result of a remaining signal derived by subtracting the strong interference signal from the received signal, performing a joint detection by utilizing the matched filtering result of the remaining signal, and outputting a demodulated result. In at least one embodiment, the computation complexity of the joint detection is reduced, and the accuracy of the joint detection is improved.

Abstract translation: 公开了一种用于联合检测的方法，装置，接收器，计算机程序和存储介质。 联合检测方法包括基于干扰信号等级来分类干扰信号，从而获得强干扰信号，从接收信号中消除强干扰信号，并通过利用剩余信号的匹配滤波结果进行联合检测。 在一个实施例中，首先确定在活动代码列表中是否存在对应于频率内相邻小区的强干扰码，如果存在强干扰码，则恢复由节点B发送的强干扰信号， 对由接收机接收的接收信号进行干扰消除，以获得通过从接收信号中减去强干扰信号而导出的剩余信号的匹配滤波结果，利用剩余信号的匹配滤波结果进行联合检测，以及 输出解调结果。 在至少一个实施例中，联合检测的计算复杂度降低，并且提高了联合检测的精度。

公开(公告)号：WO2013037112A1

公开(公告)日：2013-03-21

申请号：PCT/CN2011/079639

申请日：2011-09-14

Applicant: ST-ERICSSON SA ,  TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping

Inventor： TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping

IPC: H04L25/02

CPC classification number: H04W52/24 ,  H04L25/0206 ,  H04L25/0212 ,  H04L25/0216 ,  H04L25/0218 ,  H04L2025/03414

Abstract: The embodiment of the invention discloses a method, device and computer program for denoising in channel estimation. The method comprises steps of: calculating a noise power value and a power value of each path in each user window based on a channel estimation result, the user window is referred to channel impulse response window corresponding to this user; calculating a denoising threshold factor based on the noise power value and the power value of each path in each user window; calculating a denoising threshold value based on the noise power value and the denoising threshold factor; and performing a denoising processing on the channel estimation result by using the denoising threshold value.

Abstract translation: 本发明的实施例公开了一种用于在信道估计中进行去噪的方法，装置和计算机程序。 该方法包括以下步骤：基于信道估计结果，计算每个用户窗口中的每个路径的噪声功率值和功率值，所述用户窗口参考与该用户对应的信道脉冲响应窗口; 基于每个用户窗口中的每个路径的噪声功率值和功率值来计算去噪阈值因子; 基于噪声功率值和去噪阈值因子计算去噪阈值; 以及通过使用去噪阈值对信道估计结果进行去噪处理。

公开(公告)号：EP2756644A1

公开(公告)日：2014-07-23

申请号：EP11872306.3

申请日：2011-09-14

Applicant: ST-Ericsson SA

Inventor： TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping

IPC: H04L25/02

CPC classification number: H04W52/24 ,  H04L25/0206 ,  H04L25/0212 ,  H04L25/0216 ,  H04L25/0218 ,  H04L2025/03414

Abstract: The embodiment of the invention discloses a method, device and computer program for denoising in channel estimation. The method comprises steps of: calculating a noise power value and a power value of each path in each user window based on a channel estimation result, the user window is referred to channel impulse response window corresponding to this user; calculating a denoising threshold factor based on the noise power value and the power value of each path in each user window; calculating a denoising threshold value based on the noise power value and the denoising threshold factor; and performing a denoising processing on the channel estimation result by using the denoising threshold value.

公开(公告)号：EP2756603A1

公开(公告)日：2014-07-23

申请号：EP11872402.0

申请日：2011-09-14

Applicant: ST-Ericsson SA

Inventor： TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping

IPC: H04B1/707

CPC classification number: H04L5/0073 ,  H04B1/7107 ,  H04B2201/709745 ,  H04L25/0202 ,  H04L25/0204

Abstract: The embodiment of the invention discloses a channel estimation method for a TD-SCDMA system. The channel estimation method comprises steps of: obtaining a coarse channel estimation of a channel l of an intra-frequency cell set by a single cell channel estimation algorithm; performing an interference cancellation on the coarse channel estimation to obtain a channel estimation; determining a channel environment according to the channel estimation; and determining a stop strategy for the interference cancellation according to the channel environment and controlling performing the interference cancellation according to the stop strategy. The embodiment of the invention also discloses a channel estimation apparatus for a TD-SCDMA system, a communication device and a computer program executing the channel estimation method.

公开(公告)号：EP2759066A1

公开(公告)日：2014-07-30

申请号：EP11872872.4

申请日：2011-09-20

Applicant: ST-Ericsson SA

Inventor： TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping ,  ZHANG, Daijun

IPC: H04B1/7105

CPC classification number: H04B1/7105 ,  H04B1/7107 ,  H04B2201/70702

Abstract: A method, apparatus, receiver, computer program and storage medium for joint detection are disclosed. The joint detection method includes categorizing interference signals based on level of interference so as to obtain a strong interference signal, cancelling the strong interference signal from a received signal, and performing a joint detection by utilizing a matched filtering result of a remaining signal. In one embodiment, it is to firstly determine whether a strong interference codes corresponding to an intra-frequency adjacent cell exists in an active code list or not, recovering a strong interference signal transmitted by a Node B if the strong interference codes exists, applying an interference cancellation to a received signal received by a receiver so as to obtain a matched filtering result of a remaining signal derived by subtracting the strong interference signal from the received signal, performing a joint detection by utilizing the matched filtering result of the remaining signal, and outputting a demodulated result. In at least one embodiment, the computation complexity of the joint detection is reduced, and the accuracy of the joint detection is improved.

公开(公告)号：EP2756603B1

公开(公告)日：2016-11-02

申请号：EP11872402.0

申请日：2011-09-14

Applicant: ST-Ericsson SA

Inventor： TANG, Zhixun ,  LI, Xie ,  ZHANG, Liping

IPC: H04B1/7107 ,  H04B1/7103 ,  H04J11/00

CPC classification number: H04L5/0073 ,  H04B1/7107 ,  H04B2201/709745 ,  H04L25/0202 ,  H04L25/0204