Baseband-derived RF digital predistortion
US8213884B2 · kind B2 · utility
25Cited by
63References
13Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 8, 2008 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | Feb 7, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03477
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A baseband-derived RF predistortion system using a lookup table having coefficients extracted at baseband and then applied at RF by means of a vector modulator. The architecture combines the narrowband advantage of envelope predistortion with the accuracy of baseband predistortion, and including compensation for memory effects. A polynomial-based alternative is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.