Invention Application
- Patent Title: OVER THE AIR ACQUISITION OF RADIO FREQUENCY IMPAIRMENT INFORMATION
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Application No.: US15274941Application Date: 2016-09-23
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Publication No.: US20170366209A1Publication Date: 2017-12-21
- Inventor: Haim Mendel Weissman , Igor Gutman , Joseph Patrick Burke , Vijay Chellappa , Sumit Verma , Paul Draxler
- Applicant: QUALCOMM Incorporated
- Main IPC: H04B1/04
- IPC: H04B1/04 ; H04B17/23 ; H04B17/24

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.
Public/Granted literature
- US09960794B2 Over the air acquisition of radio frequency impairment information Public/Granted day:2018-05-01
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