Method and apparatus for correcting in-phase signal and quadrature-phase signal
US9210025B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 15, 2014 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | May 15, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/3863
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a method for correcting an IQ signal. includes: saving an I signal of a last frame and a Q signal of the last frame that are output by a receiving front end; eliminating a direct-current offset of an I signal of a current frame and a direct-current offset of a Q signal of the current frame according to the I signal of the last frame and the Q signal of the last frame; and geometrically correcting an I signal of the current frame after direct-current offset elimination and a Q signal of the current frame after direct-current offset elimination according to an I signal of the last frame after direct-current offset elimination and a Q signal of the last frame after direct-current offset elimination to obtain a corrected I signal of the current frame and a corrected Q signal of the current frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.