Orthogonal frequency division multiplexing (OFDM) receiver used in wireless local area network system and symbol timing synchronization method therefor
US7280605B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 2004 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Mar 1, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/261
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An Orthogonal Frequency Division Multiplexing (OFDM) receiver of a wireless Local Area Network (LAN) system uses double cross-correlation and double peak-value comparison for symbol timing synchronization. The OFDM receiver of the wireless LAN system performs first differential cross-correlation using a short training symbol as a reference signal, performs second differential cross-correlation for an output value of the first differential cross-correlation, and performs double peak-value comparison for an output value of the second differential cross-correlation. In this way, fast symbol synchronization is achieved due to an excellent correlation property. Accordingly, a wireless LAN system including the OFDM receiver has a high response speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.