Open AccessOne‐step extraction of optimal normalisation gain for digital predistortion linearisation
Author(s) -
Wang Haoyu,
Liu Falin,
Tao Wei,
Li Gang
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2014.4216
Subject(s) - predistortion , linearity , amplifier , computer science , power (physics) , electronic engineering , control theory (sociology) , function (biology) , power gain , mathematics , algorithm , engineering , telecommunications , artificial intelligence , bandwidth (computing) , physics , control (management) , quantum mechanics , evolutionary biology , biology
It has been proved that the choice of normalisation gain, which is used to synthesise the predistortion function, has significant influence on the linearity performance of linearised power amplifiers. A one‐step method is proposed to extract the optimal normalisation gain. The proposed method is directly derived from physical logics to keep the gain of predistortion function unity. Thus, it has much lower complexity compared to the scanning strategy in the conventional method and has easy implementation. A experimental test shows that the linearity performance of the proposed method is comparable to the optimal normalisation gain and also outperforms other published ones.