Method and apparatus for improving the performance of MIMO wireless systems
US7782132B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2006 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Feb 28, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/75
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for efficiently providing DC power enhancement to power amplifiers each of which being arranged in a MIMO system, by suing an enhancement circuitry with a plurality of inputs and outputs. Each input has a corresponding DC enhancement output that is connected to a DC enhancement input of a power amplifier. The DC enhancement output becomes operative whenever the amplitude of the corresponding input signal exceeds a predetermined threshold. The envelope of a plurality of input signals is sampled by sampling circuitries and the sampled envelopes are fed into a summation circuitry, in which they are summed. Whenever one of the sampled envelopes exceeds the threshold, a DC enhancement power is simultaneously provided to all DC enhancement inputs of all power amplifiers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.