Controlling peak-to-average power ratio reduction
US12273224B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2021 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Mar 31, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method of controlling peak-to-average power ratio (PAPR) reduction for a multi-antenna transmitter using OFDM is disclosed. Similar to tone injection, a Peak reduction signal is added to the subcarriers for suppressing peaks of the transmitted signal. However different schemes summarized on FIG. 2 are proposed for such a superimposition of a peak reduction signal. Subcarriers carrying reference signals (DMRS) might not carry any peak reduction signal (FIG. 2b) or at a lower power than data subcarriers (FIG. 2c). Furthermore data subcarriers may be zeroed out to carry the peak reduction signal (resulting in tone insertion, FIG. 2d) or the modulation order of the data subcarriers might be reduced to increase the power of the peak reduction signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.