Method and apparatus for achieving and maintaining symbol synchronization particularly in an OFDM system
US6421401B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 1999 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | May 7, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2657
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
To achieve and maintain symbol synchronization in a receiver a correlation (302) between an undelayed sequence of samples representing the received signal and a delayed sequence of samples representing the received signal is calculated, and a moving sum (306) of the calculated correlation to produce a certain sequence of values is calculated. In addition, the values in the sequence of values are multiplied by predetermined other values obtained from the sequence of values in order to produce (307, 502) a modified sequence of values, and a moving sum (311, 505) is calculated of the modified sequence of values to produce a peak value that indicates the correct symbol synchronization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.