Loopback testing in frequency division duplex systems
US10193618B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2015 |
| Grant date | Jan 29, 2019 |
| Priority date | — |
| Expiry date | Mar 2, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L43/50
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communication device and method therein for loopback testing. The device comprises a transmitter and a receiver and applies FDD for communication over one or more lines. The method comprises degrading a linearity of the transmitter, as compared to the linearity during normal operation. The method further comprises transmitting at least one test signal in a transmit frequency band, such that at least one signal is created in a receive frequency band, wherein the created at least one signal is a distortion product of the at least one test signal; and further, receiving a response to the at least one created signal in the receive frequency band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.