Frequency dependent I/Q impairment compensation
US9130626B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2014 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Mar 26, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/3863
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods, systems, and devices are described for compensating for transmit I/Q impairments in a digital signal. A frequency domain version of a first one of the components may be scaled at a wireless modem according to a frequency dependent I/Q impairment compensation function to obtain a compensated frequency domain version of the first one of the components. The compensated frequency domain version of the first one of the components may be combined with a frequency domain version of a second one of the components at the wireless modem to produce a compensated frequency domain version of the digital signal. The compensated frequency domain version of the digital signal may be transformed to the time domain at the wireless modem to produce a compensated time domain version of the digital signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.