Time domain symbol timing synchronization circuit and method thereof for communication systems
US7742537B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2007 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Jan 13, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2678
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A time domain symbol timing synchronization circuit is disclosed, which comprises: an autocorrelation function calculator for calculating cyclic prefix autocorrelation functions and an offset time estimator for searching peak positions of cyclic prefix autocorrelation functions to indicate symbol boundary of received communication symbols. The offset time estimator compares a current peak position and a previous peak position. If (a) the difference of the positions is larger than a threshold and (b) the current peak is smaller than a reference average peak, the current peak is determined as false; the offset time estimator weeds out and replaces the current peak position by the previous peak position; and the current peak is not introduced in the reference average peak calculation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.