Closed-loop transmission feedback in wireless communication systems
US8130847B2 · kind B2 · utility
13Cited by
1References
22Claims
0Family size
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Key dates
| Filing date | Nov 9, 2007 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Apr 11, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0023
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An orthogonal frequency division multiplexing wireless communication terminal, that communicates with a base unit, obtains a set of analog coefficients by transforming a transmit spatial covariance matrix, modulates the set of analog coefficients onto multiple channels to form a feedback waveform, and transmits the feedback waveform to the base unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.