Method and apparatus for accurate time synchronization in wireless communication system
US9031001B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2012 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | Feb 26, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2671
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for time synchronization and an OFDMA receiver thereof are provided. A preamble timing is obtained by a two-stage correlation in a time domain between a sequence of a received symbol and a reference preamble. The two-stage correlation is further simplified to perform a conjugate multiplication between a one-stage correlation and its correspondingly delayed result. A preamble boundary is adaptively determined by a peak value based on a result of the two-stage correlation. In this way, the time synchronization is achieved with a robust performance in a low SNR, high frequency offset or large delay spread fading channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.