Power de-rating reduction in a transmitter
US7778347B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2006 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Apr 19, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2623
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless transmitter is configured to map N first samples of a first discrete Fourier transform (DFT) of a group of coded symbols to M sub-carriers according to a first sub-carrier mapping rule. In this case, M is greater than N. The wireless transmitter is also configure to perform a first inverse DFT (IDFT) on the M sub-carriers to provide M second samples and clip the M second samples according to a clipping rule to provide M third samples. The wireless transmitter is further configured to perform a second DFT on the M third samples, de-map the M third samples to N fourth samples, and map the N fourth samples to O subcarriers according to a predetermined second subcarrier mapping rule. In this case, O is greater than or equal to M.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.