公开(公告)号：US09363815B2

公开(公告)日：2016-06-07

申请号：US14199471

申请日：2014-03-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mingjie Dong ,  Yao Cheng ,  Sheng Li ,  Florian Roemer ,  Jianshu Zhang ,  Martin Haardt

IPC: H04W72/04 ,  H04L12/26 ,  H04B7/04 ,  H04L25/02 ,  H04L25/03

CPC classification number: H04W72/046 ,  H04B7/0452 ,  H04L25/0204 ,  H04L25/0242 ,  H04L25/03898 ,  H04L43/08

Abstract: The present invention provides a method for scheduling a SDMA user group in an MU MIMO system and a base station. The method comprise the following steps: calculating, according to channel state information, a projection matrix of a channel matrix of each user in a user group on a joint channel matrix of other users in the same user group, where the user group is selected from a plurality of users; calculating a capacity metric of the user group according to the projection matrixes; and selecting an optimal user group according to the metrics of a plurality of user groups. The present invention effectively eliminates the MUI on terminal users at the transmitter side, and reduces the computational complexity.

Abstract translation: 本发明提供一种在MU MIMO系统和基站中调度SDMA用户组的方法。 该方法包括以下步骤：根据信道状态信息，在同一用户组中的用户组中的其他用户的联合信道矩阵上的用户组中的每个用户的信道矩阵的投影矩阵， 多个用户; 根据投影矩阵计算用户组的容量度量; 以及根据多个用户组的度量来选择最佳用户组。 本发明有效地消除了发射机侧终端用户的MUI，降低了计算复杂度。

公开(公告)号：US20140185700A1

公开(公告)日：2014-07-03

申请号：US14198899

申请日：2014-03-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mingjie Dong ,  Yao Cheng ,  Sheng Li ,  Florian Roemer ,  Jianshu Zhang ,  Martin Haardt

IPC: H04B7/04 ,  H04W52/42

CPC classification number: H04B7/0456 ,  H04B7/0452 ,  H04B7/0634 ,  H04W52/42

Abstract: The present invention relates to the field of communications technologies and discloses a method and an apparatus for linear precoding in a multi-user multiple-input multiple-output system, which can reduce computational complexity, improve system efficiency, and enhance system robustness by using a linear precoding technology in the case of imperfect CSI. According to the solutions provided in embodiments of the present invention, a first matrix is determined according to channel information of the system; an equivalent-channel matrix is acquired according to the first matrix; the equivalent-channel matrix is decomposed, and a second matrix is obtained through computation; a precoding matrix is obtained according to the first matrix and the second matrix, so that a power balance is achieved between spatial streams of each user after two signals to be concurrently transmitted are processed by using the precoding matrix.

Abstract translation: 本发明涉及通信技术领域，并且公开了一种用于多用户多输入多输出系统中的线性预编码的方法和装置，其可以通过使用多输入多输出系统降低计算复杂度，提高系统效率和增强系统鲁棒性 线性预编码技术在CSI不完善的情况下。 根据本发明实施例提供的解决方案，根据系统的信道信息来确定第一矩阵; 根据第一矩阵获取等效信道矩阵; 分解等效信道矩阵，通过计算得到第二矩阵; 根据第一矩阵和第二矩阵获得预编码矩阵，使得通过使用预编码矩阵来处理要同时发送的两个信号之后的每个用户的空间流之间的功率平衡。

公开(公告)号：US20140185564A1

公开(公告)日：2014-07-03

申请号：US14199471

申请日：2014-03-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mingjie Dong ,  Yao Cheng ,  Sheng Li ,  Florian Roemer ,  Jianshu Zhang ,  Martin Haardt

IPC: H04W72/04

CPC classification number: H04W72/046 ,  H04B7/0452 ,  H04L25/0204 ,  H04L25/0242 ,  H04L25/03898 ,  H04L43/08

Abstract: The present invention provides a method for scheduling a SDMA user group in an MU MIMO system and a base station. The method comprise the following steps: calculating, according to channel state information, a projection matrix of a channel matrix of each user in a user group on a joint channel matrix of other users in the same user group, where the user group is selected from a plurality of users; calculating a capacity metric of the user group according to the projection matrixes; and selecting an optimal user group according to the metrics of a plurality of user groups. The present invention effectively eliminates the MUI on terminal users at the transmitter side, and reduces the computational complexity.

Abstract translation: 本发明提供一种在MU MIMO系统和基站中调度SDMA用户组的方法。 该方法包括以下步骤：根据信道状态信息，在同一用户组中的用户组中的其他用户的联合信道矩阵上的用户组中的每个用户的信道矩阵的投影矩阵， 多个用户; 根据投影矩阵计算用户组的容量度量; 以及根据多个用户组的度量来选择最佳用户组。 本发明有效地消除了发射机侧终端用户的MUI，降低了计算复杂度。