Direct detection of optical orthogonal frequency division multiplexing (OFDM) signals
US8934780B2 · kind B2 · utility
4Cited by
3References
20Claims
0Family size
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Key dates
| Filing date | Dec 10, 2012 |
| Grant date | Jan 13, 2015 |
| Priority date | — |
| Expiry date | Mar 6, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2697
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques for timing synchronization in an optical orthogonal frequency division multiplexing (OOFDM) system includes providing a time-domain training symbol having a symmetric distribution and producing the training symbol by transmitting a real-valued PN sequence on each subcarrier under the OOFDM. The training sequence includes an initial value, followed by an odd length palindromic sequence of values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.