Uplink channel estimation system for orthogonal frequency division multiple access system and method thereof
US7428267B2 · kind B2 · utility
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Key dates
| Filing date | Oct 20, 2004 |
| Grant date | Sep 23, 2008 |
| Priority date | — |
| Expiry date | Nov 24, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/023
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In the uplink of an OFDMA system, a preamble is used to estimate a channel and then the pilot tones of a data symbol are used for channel estimation to update the channel estimate. The channel estimate is used for channel compensation, and the phase of the channel is corrected using the channel estimate obtained from the pilot tones. In this way, the channel estimation performance and hence the compensation ability can be enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.