Transmitter and the method therefor
US8385442B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2009 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | Jun 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/262
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A transmitter and the method therefor are provided. The transmitter is applied in an orthogonal frequency division multiplexing (OFDM) based or other multicarrier communication systems. The transmitter uses N sub-carriers. Among the N sub-carriers, L sub-carriers (or tones) are reserved for PAPR reduction. L is less than N. The method includes the following steps. Original frequency domain data symbols are generated and fed into the reserved-tone symbol generation unit. The reserved-tone symbols are generated by using pure frequency domain signal processing. Then the reserved-tone symbols are combined with original data symbols to generate combined PAPR reduction signal. The resultant PAPR reduction signal can be fed into reserved-tone symbol generation unit iteratively to obtain updated reserved-tone symbols. For proper iterations, the original data symbols combined with L frequency domain reserved-tone symbols will result in lower PAPR transmit signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.