Apparatus and method for reducing peak to average power ratio through recombination of orthogonal frequency division multiplexing symbol
US8675750B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 21, 2011 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Dec 2, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2614
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
There are provided an apparatus and a method for reducing a peak to average power ratio (PAPR) through the recombination of an orthogonal frequency division multiplexing (OFDM) symbol. The apparatus includes an orthogonal frequency division multiplexing (OFDM) symbol transforming unit, a peak power measuring unit, and an OFDM symbol selecting unit, wherein the OFDM symbol transforming unit generates the plurality of OFDM symbols by (a) performing a process of rotating the OFDM symbol by a predetermined angle in a complex plane and performing cyclical shifting with respect to the rotated OFDM symbol and (b) repetitively performing process (a) with respect to the cyclically shifted OFDM symbol. Therefore, diversity is secured, whereby the PAPR may be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.