公开(公告)号：US20120182964A1

公开(公告)日：2012-07-19

申请号：US13497150

申请日：2010-11-02

申请人： Xiqi Gao ,  Bin Jiang ,  Xiaohu You ,  Teer Ba ,  Shi Jin ,  Jue Wang ,  Dongming Wang ,  Yanxiang Jiang

发明人： Xiqi Gao ,  Bin Jiang ,  Xiaohu You ,  Teer Ba ,  Shi Jin ,  Jue Wang ,  Dongming Wang ,  Yanxiang Jiang

IPC分类号： H04W72/04

CPC分类号： H04B7/0697 ,  H04J11/0033 ,  H04L25/0228

摘要： A pilot and channel estimation method for SDMA MIMO transmission downlink is provided in the present invention, and the method provides possibility for saving the orthogonal pilot resources; the pilot signals of different users in the transmitting antenna domain can occupy the same time-frequency resources, and thereby the pilot overhead of system resources can be reduced greatly; the method includes: for the MIMO transmission downlink that employs pre-coding for SDMA, taking the quantity of orthogonal pilot resources occupied by the users in the pre-coding domain as the number of data streams that can be transmitted or the number of spatial dimensions occupied first, at the transmitting end of the base station; then, performing SDMA transmission pre-coding for the orthogonal pilots in the pre-coding domain in the same way as the data signals, to obtain the pilot signals of the users in the transmitting antenna domain; wherein, the pilots of the users in the pre-coding domain can be orthogonal in the frequency domain or code domain, and the pilots of different users in the pre-coding domain can be identical or not identical to each other; the pilot signals of different users in the transmitting antenna domain can occupy the same time-frequency resources.

摘要翻译： 本发明提供了一种用于SDMA MIMO传输下行链路的导频和信道估计方法，该方法提供了保存正交试验资源的可能性; 发射天线域中不同用户的导频信号可以占用相同的时频资源，从而大大降低系统资源的导频开销; 该方法包括：对于采用SDMA预编码的MIMO传输下行链路，将预编码域中的用户占用的正交导频资源的数量作为可以发送的数据流的数量或空间维数 首先占用基站的发射端; 然后以与数据信号相同的方式对预编码域中的正交导频执行SDMA传输预编码，以获得发射天线域中用户的导频信号; 其中，预编码域中的用户的导频可以在频域或码域中正交，并且预编码域中的不同用户的导频可以相同或不相同; 发射天线域中不同用户的导频信号可以占用相同的时频资源。

公开(公告)号：US08737347B2

公开(公告)日：2014-05-27

申请号：US13497150

申请日：2010-11-02

申请人： Xiqi Gao ,  Bin Jiang ,  Xiaohu You ,  Teer Ba ,  Shi Jin ,  Jue Wang ,  Dongming Wang ,  Yanxiang Jiang

发明人： Xiqi Gao ,  Bin Jiang ,  Xiaohu You ,  Teer Ba ,  Shi Jin ,  Jue Wang ,  Dongming Wang ,  Yanxiang Jiang

IPC分类号： H04W72/04

CPC分类号： H04B7/0697 ,  H04J11/0033 ,  H04L25/0228

摘要： A pilot and channel estimation method for SDMA MIMO transmission downlink is provided in the present invention, and the method provides possibility for saving the orthogonal pilot resources; the pilot signals of different users in the transmitting antenna domain can occupy the same time-frequency resources, and thereby the pilot overhead of system resources can be reduced greatly; the method includes: for the MIMO transmission downlink that employs pre-coding for SDMA, taking the quantity of orthogonal pilot resources occupied by the users in the pre-coding domain as the number of data streams that can be transmitted or the number of spatial dimensions occupied first, at the transmitting end of the base station; then, performing SDMA transmission pre-coding for the orthogonal pilots in the pre-coding domain in the same way as the data signals, to obtain the pilot signals of the users in the transmitting antenna domain; wherein, the pilots of the users in the pre-coding domain can be orthogonal in the frequency domain or code domain, and the pilots of different users in the pre-coding domain can be identical or not identical to each other; the pilot signals of different users in the transmitting antenna domain can occupy the same time-frequency resources.

摘要翻译： 本发明提供了一种用于SDMA MIMO传输下行链路的导频和信道估计方法，该方法提供了保存正交试验资源的可能性; 发射天线域中不同用户的导频信号可以占用相同的时频资源，从而大大降低系统资源的导频开销; 该方法包括：对于采用SDMA预编码的MIMO传输下行链路，将预编码域中的用户占用的正交导频资源的数量作为可以发送的数据流的数量或空间维数 首先占用基站的发射端; 然后以与数据信号相同的方式对预编码域中的正交导频执行SDMA传输预编码，以获得发射天线域中用户的导频信号; 其中，预编码域中的用户的导频可以在频域或码域中正交，并且预编码域中的不同用户的导频可以相同或不相同; 发射天线域中不同用户的导频信号可以占用相同的时频资源。