TY - GEN
T1 - Direct digital predistortion on a computer controlled FPGA
AU - Sterling, Mark
AU - Bocko, Mark
PY - 2007/8/6
Y1 - 2007/8/6
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
AN - SCOPUS:34547530732
SN - 1424407281
SN - 9781424407286
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - II369-II372
BT - 2007 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '07
T2 - 2007 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '07
Y2 - 15 April 2007 through 20 April 2007
ER -