Method and apparatus for antenna array channel feedback
US8942302B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2012 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Dec 20, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03891
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus provide antenna array channel feedback. The method can include receiving, at a wireless terminal, a set of channel state information reference signals. The method can include determining, by the wireless terminal, based on the received set of channel state information reference signals, a precoding matrix that is a product of a first precoding matrix and a second precoding matrix. The first precoding matrix can have at least a representation in terms of a representation matrix. The representation matrix can be based on a matrix selected from a first codebook. The second precoding matrix can be based on a second codebook. The method can include transmitting, by the wireless terminal, a representation of at least one of the first precoding matrix and the second precoding matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.