Estimation of CFO based on relative values of frequency bins corresponding to used subcarriers of received preamble symbols for OFDM systems
US9306789B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 10, 2013 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Oct 10, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2672
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
It is proposed a method for receiving and demodulating an orthogonal frequency division multiplexing signal received through a transmission channel (TC) by a receiver (RCV), comprising demultiplexing said signal to generate time symbols (yl(n)) and performing a time-to-frequency conversion of these time symbols to generate frequency bins (Yl(k)) corresponding to received symbols, the received symbols comprising preamble symbols. The method comprises: Determining an estimated carrier frequency offset on the basis of frequency bins corresponding to used subcarriers of the preamble symbols; Applying said estimated carrier frequency offset to the time symbols so as to correct the carrier frequency of these received symbols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.