Transmit beamforming utilizing channel estimation matrix decomposition feedback in a wireless MIMO communication system
US8229017B1 · kind B1 · utility
152Cited by
3References
31Claims
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Key dates
| Filing date | Dec 8, 2008 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Mar 28, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0665
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for a communication system having a first transceiver device having a first plurality of antennas and a second transceiver device having a second plurality of antennas determines a channel estimation matrix describing a forward channel in which a signal travels from the first transceiver device to the second transceiver device. The channel estimation matrix is decomposed to derive a unitary matrix and an upper triangular matrix. A precoding matrix is developed using the upper triangular matrix, and the precoding matrix is used to control transmission of a modulated signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.