Methods for estimating doppler spreads including autocorrelation function hypotheses and related systems and receivers
US6680969B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1999 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Aug 12, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/70701
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A Doppler spread for a communications channel is measured by providing an estimate of the communications channel and generating an autocorrelation function for the estimate of the communications channel. One of a plurality of autocorrelation function hypotheses is selected to approximate the autocorrelation function for the estimate of the communications channel wherein each of the autocorrelation function hypotheses corresponds to a respective Doppler spread estimate hypothesis. One of the Doppler spread estimate hypotheses is selected corresponding to the selected autocorrelation function hypotheses as an estimate of the Doppler spread for the communications channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.