Apparatus and method for guard interval inserting/removing in an OFDM communication system
US7411894B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2003 |
| Grant date | Aug 12, 2008 |
| Priority date | — |
| Expiry date | Apr 27, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2607
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A transceiver system and method in an OFDM communication system which enables exact symbol synchronization acquisition and improves performance for frequency offset and channel estimation. In the apparatus, a guard interval filling unit copies data at a predetermined interval in an input data row inputted to be transmitted, and fills in the copied data in the preset guard interval in the input data row. A selection unit selectively receives an output data row outputted from the guard interval filling means and unique words having a constant amplitude and a non-periodic auto-correlation characteristic, and outputs the OFDM symbol in which the unique words are inserted in the output data row.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.