Testing CATV networks with direct sequence spread spectrum signals
US8327409B2 · kind B2 · utility
5Cited by
13References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2009 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Dec 18, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H20/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Use of direct sequence spread spectrum test signals injected at the same time and frequency of active network services to perform non-interfering measurements in the forward and reverse path of a CATV plant. Ideally, a plurality of transmitters, each transmitting a test signal with a unique spreading code, whereby multiple overlapping test signals are received simultaneously at the receiver (CDMA).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.