Peak-to-average power ratio (PAPR) reduction scheme for wireless communication
US8571000B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2009 |
| Grant date | Oct 29, 2013 |
| Priority date | — |
| Expiry date | Jul 17, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2621
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques for sending a transmission in a manner to reduce peak-to-average power ratio (PAPR) of the transmission are described. A transmitter may select phases for a plurality of resource blocks based on a metric, e.g., PAPR. The transmitter may apply the selected phases to modulation symbols to be sent on the resource blocks. In one design, the transmitter may select one phase for each resource block and may apply the phase to all modulation symbols to be sent on the resource block. In another design, the transmitter may select multiple phases for multiple spatial layers in each resource block, one phase for each spatial layer. The transmitter may then apply each phase to all modulation symbols to be sent on one spatial layer in one resource block. For both designs, the transmitter may generate at least one OFDM symbol or at least one SC-FDMA symbol based on the modulation symbols after applying the selected phases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.