Estimation of interference suppression filters using selective signal switching
US10505571B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2019 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Jun 20, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A transceiver includes a transmission chain, a reception chain, an interference suppression module and a processor. The transmission chain transmits a downstream signal to a communication network. The reception chain receives an upstream signal including (i) upstream transmissions originating by client devices, and (ii) an interference signal created by leakage and reflections of the downstream signal. The reception chain includes a configurable switch for connecting or disconnecting the upstream signal. The interference suppression module applies to the downstream signal a filter response function for generating an interference suppression signal to be subtracted from the upstream signal at a selected suppression point. The processor estimates the filter response function by monitoring the upstream signal while toggling the switch to connect and disconnect the upstream signal, and, sets the switch to connect the upstream signal and configures the interference suppression module to apply the filter response function to the downstream signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.