Multi-channel RX/TX calibration and local oscillator mismatch mitigation
US7853216B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2006 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Sep 25, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/11
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and system of optimizing transmit beam forming in a multiple radio wireless system is provided. A stimulus signal can be provided to an analog receive input of a device under test (DUT), wherein the DUT includes multiple radios. A receive phase and amplitude can be measured at baseband using the stimulus signal for each radio. At this point, a receive weight and its conjugate can be determined using the receive phases and amplitudes. A calibration vector and its conjugate can also be determined, wherein a product of the receive weight conjugate and the calibration vector conjugate generate a transmit weight. This transmit weight can be applied to transmit signals during the transmit beam forming using the multiple radios.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.