High doppler channel estimation for OFD multiple antenna systems
US7619964B2 · kind B2 · utility
13Cited by
7References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2004 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Mar 4, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/26524
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Fast fading in cellular systems causes time variation of the Channel Impulse Response (CIR) resulting in significant performance degradation that is reduced by adding a pulse train to the transmitted data symbols and estimating the CIR by averaging the symbols as they vary from one OFDM symbol to another within the physical data frame (or packet).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.