Apparatus and method for detecting spectrum inversion
US8824528B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2013 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Jun 11, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/3863
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a spectrum inversion detection apparatus which includes a differential correlation value computing portion, utilized to use a present and previous time axial symbols to compute differential correlation values individually corresponding to carriers; and a controlling portion, utilized to use the differential correlation values, when a spectrum inversion status flag is not at a spectrum inversion state, to compute a correlativity value of the each integer frequency displacement thereby, and when spectrum inversion status flag is at the spectrum inversion state, to determine a maximal correlativity value among all the computed correlativity values, and to decide a spectrum inversion status flag of the computed correlativity value which is determined as the maximal correlativity value thereby utilizing as a detection result signal to output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.