Non-adaptive amplitude-difference interference filter
US5509032A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 11, 1991 |
| Grant date | Apr 16, 1996 |
| Priority date | — |
| Expiry date | Jun 11, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0857
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An interference suppression system utilizes a non-adaptive filter to supps interference from bandspread communication signals. The filter is effective in the cancellation of interference from a bandspread communication signal whenever interference has a mean component several times greater than its variable component. By forming amplitude-differences, the filter is used to estimate whether the signed magnitude of a communication signal component is in-phase or 180.degree. out-of-phase with present interference. By estimating this component, high quality reception of spread spectrum radio communication signals in an interference environment is possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.