Large-dynamic-range lookup table for a transmitter predistorter and system and method employing the same
US8054912B2 · kind B2 · utility
5Cited by
6References
29Claims
0Family size
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Key dates
| Filing date | Jun 20, 2008 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | May 14, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2201/3233
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A predistorters for use with a nonlinear element and methods of predistorting for a nonlinear element for use in a 3G, e.g., WCDMA transmitter. In one embodiment, the predistorter includes: (1) a lookup table having non-uniformly spaced entries therein, (2) a compander configured to compand an input signal based on a nonlinearity of the nonlinear element to address the entries and (3) an interpolation offset calculation circuit associated with the lookup table and configured to produce an output based on a value of the input signal and a linear interpolation involving at least two entries from the lookup table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.