Pilot aided, time-varying finite impulse response, adaptive channel matching receiving system and method
US6085104A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1998 |
| Grant date | Jul 4, 2000 |
| Priority date | — |
| Expiry date | Mar 25, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/712
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wideband receiver, including a time-varying finite impulse response (FIR) filter, has been provided to combine multipath communications of data in response to pilot channel timing information. The time-varying FIR processes the multipath communications through independent signal paths. Each signal path includes a variable delay circuit and a variable gain circuit. The delay of each separate signal path is adjusted and made equal in response to the pilot channel timing information. Likewise, the gain of each signal path is adjusted in response to pilot channel gain information to maximize the signal to noise ratio of the combined signal paths. The separate signal paths are then summed in a combiner circuit. The time-varying FIR permits the data communication to be summed either before, or after demodulation. A method of combining multipath communications using a time-varying FIR is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.