System and method for reducing peak-to-average power ratio for multi-carrier communication systems
US8135081B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2010 |
| Grant date | Mar 13, 2012 |
| Priority date | — |
| Expiry date | Oct 15, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2614
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present disclosure presents a predictive signal producing method that effectively levels transmitter output power in a multi-carrier communication system and results in approaching amplifier performance normally associated with constant carrier waveforms. Embodiments of the disclosed solution offers >10 dB reduction in the peak-to-average power required to support the transmission of, for example, orthogonal frequency division modulation (“OFDM”) modulation techniques. Embodiments of the novel system and method maximize peak-to-average power ratio (“PAPR”) reduction with selective mapping and soft clipping, which may include filtering, combined. This novel approach also minimizes overhead, bit error rate, retransmissions, and increases latency as well as implementing processing cycles with a number of iterations. The disclosed system and method improves the total system DC power efficiency and provides an optimal solution for PAPR reduction in multi-carrier communication systems such as, for example, OFDM.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.