公开(公告)号：US09124328B2

公开(公告)日：2015-09-01

申请号：US14176764

申请日：2014-02-10

Applicant: FutureWei Technologies, Inc.

Inventor： Pengfei Xia ,  Yang Tang ,  Zhigang Rong ,  Linhong Chen

IPC: H04B7/06 ,  H04L1/00 ,  H04L25/03 ,  H04B7/04 ,  H04L25/02 ,  H04L1/06

CPC classification number: H04B7/0626 ,  H04B7/0417 ,  H04B7/043 ,  H04B7/0434 ,  H04B7/0478 ,  H04B7/0482 ,  H04B7/0639 ,  H04B7/065 ,  H04B7/0663 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/06 ,  H04L25/0204 ,  H04L25/021 ,  H04L25/0224 ,  H04L25/0391

Abstract: A system and method for channel information feedback in a wireless communications system is provided. A method for communications device operation includes receiving a pilot transmitted by a controller, computing a channel estimate for a channel between the controller and a communications device, the computing based on the pilot, computing a channel correlation matrix for the channel based on the channel estimate, and transmitting a reduced rank representation of the channel correlation matrix to the controller as a first feedback information. The method also includes adapting a first codebook based on the reduced rank representation of the channel correlation matrix, computing a representation of the channel using the adapted codebook, transmitting the representation of the channel as a second feedback information, and receiving a transmission beamformed based on the first feedback information and the second feedback information.

Abstract translation: 提供了一种用于无线通信系统中的信道信息反馈的系统和方法。 一种用于通信设备操作的方法包括接收由控制器发送的导频，计算控制器和通信设备之间的信道的信道估计，基于导频的计算，基于信道估计计算信道的信道相关矩阵 并且将作为第一反馈信息的信道相关矩阵的缩减秩表示发送到控制器。 该方法还包括基于信道相关矩阵的降级表示来适配第一码本，使用适配码本计算信道的表示，将该信道的表示作为第二反馈信息发送，以及接收基于 第一反馈信息和第二反馈信息。

公开(公告)号：US20140211874A1

公开(公告)日：2014-07-31

申请号：US14176764

申请日：2014-02-10

Applicant: FutureWei Technologies, Inc.

Inventor： Pengfei Xia ,  Yang Tang ,  Zhigang Rong ,  Linhong Chen

IPC: H04B7/06 ,  H04L25/03

CPC classification number: H04B7/0626 ,  H04B7/0417 ,  H04B7/043 ,  H04B7/0434 ,  H04B7/0478 ,  H04B7/0482 ,  H04B7/0639 ,  H04B7/065 ,  H04B7/0663 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/06 ,  H04L25/0204 ,  H04L25/021 ,  H04L25/0224 ,  H04L25/0391

Abstract: A system and method for channel information feedback in a wireless communications system is provided. A method for communications device operation includes receiving a pilot transmitted by a controller, computing a channel estimate for a channel between the controller and a communications device, the computing based on the pilot, computing a channel correlation matrix for the channel based on the channel estimate, and transmitting a reduced rank representation of the channel correlation matrix to the controller as a first feedback information. The method also includes adapting a first codebook based on the reduced rank representation of the channel correlation matrix, computing a representation of the channel using the adapted codebook, transmitting the representation of the channel as a second feedback information, and receiving a transmission beamformed based on the first feedback information and the second feedback information.

Abstract translation: 提供一种用于无线通信系统中的信道信息反馈的系统和方法。 一种用于通信设备操作的方法包括接收由控制器发送的导频，计算控制器和通信设备之间的信道的信道估计，基于导频的计算，基于信道估计计算信道的信道相关矩阵 并且将作为第一反馈信息的信道相关矩阵的缩减秩表示发送到控制器。 该方法还包括基于信道相关矩阵的降级表示来适配第一码本，使用适配码本计算信道的表示，将该信道的表示作为第二反馈信息发送，以及接收基于 第一反馈信息和第二反馈信息。