System and method for channel state related feedback in multi-user multiple-input-multiple-output systems
US8934328B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2011 |
| Grant date | Jan 13, 2015 |
| Priority date | — |
| Expiry date | Jun 25, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0658
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
System and method for dimension reduction and for channel and interference condition feedback in a Multi-User Multiple-Input-Multiple-Output (MU MIMO) wireless communication systems are provided herein. The method for dimension reduction includes determining a number of virtual antennas, vk, for beamformees pertaining to a multi user (MU) transmission group, reducing the dimension of the matrix by selecting a sub-set of antennas or by Eigen mode selection and sending a reduced dimension candidate transmit beamforming matrix or an effective channel matrix to a beamformer. The method for channel and interference condition feedback Interference condition includes sending to a beamformee metric indicative of the interference level from other streams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.