Baseband predistortion system for the adaptive linearization of power amplifiers
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United States of America Patent
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Jun 4, 1996
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app pub date -
Dec 14, 1994
filing date -
Dec 14, 1993
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Abstract
The invention relates to a baseband predistortion system for the adaptive linearization of power amplifiers and to a radiotransmitter using the predistortion system. It is based upon the updating of two error tables, one for the amplitude and one for the phase, whose content is used for correcting the baseband samples. The content of the tables is obtained by accumulating the difference, suitably weighed, between the sampling entering the predistortion device and the demodulated feedback value.
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