Abstract
We report on the development of direct digital radio frequency predistortion techniques for high power amplifiers and their demonstration in a MF band FPGA-based system. The basic component of our work is a nonlinear cubic voltage characteristic which is realized digitally by means of a look-up table. This method is situated in the context of existing baseband and analog predistortion techniques. In particular, we demonstrate our results experimentally and show a relationship between the bit-depth of our look-up table and the size of intermodulation distortions in the output of a class A amplifier.
| Original language | English |
|---|---|
| Title of host publication | ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings |
| Volume | 2 |
| DOIs | |
| Publication status | Published - 2007 |
| Externally published | Yes |
| Event | 2007 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '07 - Honolulu, HI, United States Duration: Apr 15 2007 → Apr 20 2007 |
Other
| Other | 2007 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '07 |
|---|---|
| Country | United States |
| City | Honolulu, HI |
| Period | 4/15/07 → 4/20/07 |
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Keywords
- Communication system nonlinearities
- Field programmable gate arrays
- Microwave power amplifiers
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Signal Processing
- Acoustics and Ultrasonics
Cite this
Direct digital predistortion on a computer controlled FPGA. / Sterling, Mark; Bocko, Mark.
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. Vol. 2 2007. 4217422.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Direct digital predistortion on a computer controlled FPGA
AU - Sterling, Mark
AU - Bocko, Mark
PY - 2007
Y1 - 2007
N2 - We report on the development of direct digital radio frequency predistortion techniques for high power amplifiers and their demonstration in a MF band FPGA-based system. The basic component of our work is a nonlinear cubic voltage characteristic which is realized digitally by means of a look-up table. This method is situated in the context of existing baseband and analog predistortion techniques. In particular, we demonstrate our results experimentally and show a relationship between the bit-depth of our look-up table and the size of intermodulation distortions in the output of a class A amplifier.
AB - We report on the development of direct digital radio frequency predistortion techniques for high power amplifiers and their demonstration in a MF band FPGA-based system. The basic component of our work is a nonlinear cubic voltage characteristic which is realized digitally by means of a look-up table. This method is situated in the context of existing baseband and analog predistortion techniques. In particular, we demonstrate our results experimentally and show a relationship between the bit-depth of our look-up table and the size of intermodulation distortions in the output of a class A amplifier.
KW - Communication system nonlinearities
KW - Field programmable gate arrays
KW - Microwave power amplifiers
UR - http://www.scopus.com/inward/record.url?scp=34547530732&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34547530732&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.2007.366249
DO - 10.1109/ICASSP.2007.366249
M3 - Conference contribution
SN - 1424407281
SN - 9781424407286
VL - 2
BT - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
ER -