Cubic spline predistortion, algorithm and training, for a wireless LAN system
US6882217B1 · kind B1 · utility
129Cited by
5References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 27, 2002 |
| Grant date | Apr 19, 2005 |
| Priority date | — |
| Expiry date | Nov 30, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention includes methods and devices to apply predistortion to correct nonlinearities of a power amplifier in an OFDM symbol transmission system. More particularly, predistortion is patterned to take into account clipping of symbols and to match an effective input range of the predistorter with an average power output of the power amplifier. This invention may be applied to a variety of standards utilizing OFDM technology, including IEEE 802.11a, Hiperlan/2 and MMAC.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.