Method and system for signal distortion characterization and predistortion compensation using mutual coupling in a radio frequency transmit/receive system
US8280312B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2010 |
| Grant date | Oct 2, 2012 |
| Priority date | — |
| Expiry date | Dec 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/525
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and system use the mutual coupling property of multiple antenna elements for characterizing signal waveform distortion introduced by items in the signal path, including the antenna elements, of a radio frequency transmit/receive system. The method and system alleviate the need for external test equipment by using the same hardware used in standard operation of the transmit/receive system for performing waveform distortion characterization through the generation, mutual coupling, and acquisition of a reference signal. In an embodiment involving application of complementary inverse predistortion to generation of an operational signal and/or to processing of a received operational signal, the signal as received and processed during standard system operation is compensated for distortion contributed by system hardware, improving impulse response and system performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.