I/Q imbalance estimation and correction in a communication system
US8000382B2 · kind B2 · utility
5Cited by
1References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2008 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | Jun 17, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0024
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Certain aspects and embodiments provide for accurate measurement and estimation of imbalances between in-phase (I) and quadrature (Q) components of a complex baseband signal. The accuracy of I/Q phase imbalance estimates may be enhanced by conducting them on a transmitter and a receiver that are connected via a local, loopback connection and by removing cross-spectrum interference in transferred packets. Once these accurate I/Q phase imbalances are determined, they may be used to adjust a signal processed by the transmitter or the receiver to increase the performance and data throughput of communications using the signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.