Over the air acquisition of radio frequency impairment information
US9960794B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2016 |
| Grant date | May 1, 2018 |
| Priority date | — |
| Expiry date | Sep 23, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0091
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Systems and methods for providing indications about the TX RF non-linear impairments are disclosed. In accordance with some implementations, a first device (UE or base station) estimates EVM indications for the signal and determines if the EVM indications is above a threshold. The first device may transmit the estimated TX non-linearity indications such as AM-AM, AM-PM, Volterra coefficients, and/or other performance metrics to a second device, that transmitted the signal, when it is determined that the EVM indications is above the threshold. Systems and methods for wireless communication impairment correction are also disclosed wherein, in accordance with some implementations, a first device receives estimated TX non-linearity indications such as AM-AM, AM-PM, and/or Volterra coefficients from a second device and performs non-linear correction of a transmit signal for the second receiver device based at least in part on the EVM indications. Other aspects, embodiments, and features are also claimed and described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.