Interference cancellation system and method using impulse response
US7907690B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2006 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | Oct 14, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/4028
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An interference cancellation (IC) system and method for use within a 1553 communication system comprising a data bus carrying primary signals having a 1553 component and a non-1553 component are provided. The IC system has an input port, a 1553 data extraction block and an interference cancellation circuit with an interference measurement and a cancellation block. The interference measurement block receives 1553 decoded data from the 1553 data extraction block and a sampled primary signal via the input port, and, within an impulse response block, produces an interference signal based on a 1553 impulse response system model. The cancellation block subtracts the interference signal from the sampled primary signal and produces an output signal with the 1553 component substantially cancelled. Furthermore, an IC system using adaptive filtering techniques within the impulse response block is provided. The Least Mean Squares (LMS) algorithm can be used as an adaptive filter technique.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.