Apparatus and method for beamforming with limited feedforward channel in multiple input multiple output wireless communication system
US8284863B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 29, 2008 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | Aug 8, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0665
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus and method are provided for beamforming in a MIMO wireless communication system. A base station includes a first calculator that repeatedly calculates downlink beamforming vectors of the user terminals to calculate the optimal beamforming vectors for the user terminals, a quantizer that quantizes the downlink beamforming vectors in order to transmit information of the downlink beamforming vectors, a control channel transmitter that feeds forward information of the quantized downlink beamforming vectors to the user terminals, a second calculator that calculates the final downlink beamforming vectors of the user terminals, and a beamforming transmitter that sums the beamformed TX signals of the user terminals and transmits the summed TX signals through a plurality of TX antennas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.