System and method for channel information feedback in a wireless communications system
US8649456B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2010 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Jan 22, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0224
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.