Samsung electronics co., ltd. (20250007544). POWER AMPLIFIER-AWARE MODULATION
POWER AMPLIFIER-AWARE MODULATION
Organization Name
Inventor(s)
Caleb K. Lo of San Jose CA (US)
Joonyoung Cho of Portland OR (US)
Jianzhong Zhang of Dallas TX (US)
Chance Anthony Tarver of Arlington TX (US)
POWER AMPLIFIER-AWARE MODULATION
This abstract first appeared for US patent application 20250007544 titled 'POWER AMPLIFIER-AWARE MODULATION
Original Abstract Submitted
methods and apparatuses for dynamically adjusting parameters of a modulation scheme and parameters of a digital pre-distorter (dpd) to pre-compensate for distortion effects of a power amplifier (pa). a user equipment (ue) comprises a modulator configured to generate modulation symbols from input bits according to an adjusted symbol constellation, a dpd operably configured to generate pre-distorted symbols, and a pa configured to amplify the pre-distorted symbols to generate transmission symbols that include distortion effects of the pa. the adjusted symbol constellation is adjusted from a target symbol constellation such that the generated modulation symbols pre-compensate for the distortion effects. the dpd is further configured to generate the pre-distorted symbols from the modulation symbols using a pre-distortion function to further pre-compensate for the distortion effects, and update the pre-distortion function such that a difference between the transmission symbols and a scaled version of the target symbol constellation is reduced.