Invention Grant
- Patent Title: System and method for channel information feedback in a wireless communications system
- Patent Title (中): 无线通信系统中信道信息反馈的系统和方法
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Application No.: US14176764Application Date: 2014-02-10
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Publication No.: US09124328B2Publication Date: 2015-09-01
- Inventor: Pengfei Xia , Yang Tang , Zhigang Rong , Linhong Chen
- Applicant: FutureWei Technologies, Inc.
- Applicant Address: US TX Plano
- Assignee: Futurewei Technologies, Inc.
- Current Assignee: Futurewei Technologies, Inc.
- Current Assignee Address: US TX Plano
- Agency: Slater & Matsil, LLP
- Main IPC: H04B7/06
- IPC: H04B7/06 ; H04L1/00 ; H04L25/03 ; H04B7/04 ; H04L25/02 ; H04L1/06

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.
Public/Granted literature
- US20140211874A1 System and Method for Channel Information Feedback in a Wireless Communications System Public/Granted day:2014-07-31
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