Peak-to-average power ratio reduction in a multi-carrier signal
US10361897B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 3, 2016 |
| Grant date | Jul 23, 2019 |
| Priority date | — |
| Expiry date | May 3, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2634
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of transmitting a multi-carrier source signal, including symbols constituted by reserved carriers and data carriers. The method includes generating an additional signal that reduces peak-to-average power ratio of the signal to be transmitted. For each symbol, the method obtains M time samples representing the symbols and/or at least one iteration of: detecting P time samples from among P time samples representing the symbol, the P samples being the P samples of the highest amplitude among the M samples, or the P samples presenting a power value above a threshold; in the frequency domain, activating a reserved carrier, by addition of a pre-determined power to the reserved carrier; and for each activated reserved carrier: obtaining M time samples representing the activated reserved carrier, and applying a phase shift, taking account of the P detected samples, to the M time samples representing the activated reserved carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.