Reducing a peak-to-average ratio of a signal
US7822131B2 · kind B2 · utility
6Cited by
4References
20Claims
0Family size
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Key dates
| Filing date | Jan 3, 2007 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Feb 1, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2634
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and corresponding systems for reducing a peak-to-average signal ratio include determining peak and null samples of a symbol. Thereafter, an error signal is calculated that is responsive to the peak and null samples. In one embodiment the error signal has values corresponding to differences between the peak samples and a high threshold and the null samples and a low threshold. In response to the error signal, a reserved tone set of time-domain samples are produced and added to a user data set of time-domain samples. The error signal can also be used to adapt a filter for filtering samples of a symbol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.