Envelope stabilization method and apparatus
US7003025B2 · kind B2 · utility
2Cited by
6References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 14, 2001 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | May 23, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2615
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method is proposed to significantly reduce the peak to average power ratio (PAPR) for an OFDM system by stabilizing the signal envelope. By using partial response (PR) signaling to spread each sub-symbol over multiple subcarriers, the signal is first compress in time. The signal is then rearranged such that it is possible to stabilize the envelope at some constant value α, thus improving the PAPR without using excessive time-bandwidth resources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.