Methods for canceling interfering wireless signals in cable customer premises equipment devices and outside plant
US9054782B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 14, 2014 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Feb 14, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/345
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A noise reduction device for use with a cable signal distributed by an outside plant of a cable system. The device includes an antenna and a signal processing system. The outside plant receives an interfering radio frequency (“RF”) signal generated by one or more external wireless signal sources and combines the interfering RF signal with the cable signal to produce a noisy cable signal. The antenna receives the interfering RF signal as a copy signal. The signal processing system modifies the copy signal to produce a processed copy signal, and combines the noisy cable signal and the processed copy signal to produce a combined signal. The signal processing system also monitors error rate values of the combined signal, and adjusts the copy signal such that the copy signal at least partially cancels the interfering RF signal in the combined signal thereby reducing the error rate values of the combined signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.