Adaptive antenna arrays for orthogonal frequency division multiplexing systems with co-channel interference
US5973642A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1998 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Apr 1, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2647
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A technique for estimating parameters for adaptive antenna arrays in orthogonal frequency division multiplexing systems with co-channel interference is disclosed. Channel parameter estimation is preferentially performed using a two pass process that advantageously expands the temporal scope (relative to a single pass process) and considers past, present and future temporal channel estimations during parameter estimation. Channel parameters are estimated by processing the signals through fast Fourier transforms, temporal filters, and inverse fast Fourier transforms. The temporal filters optimize parameter estimation based upon instantaneous correlation of the received signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.