One‐step extraction of optimal normalisation gain for digital predistortion linearisation. Issue 6 (1st March 2015)

• Record Type: Journal Article
• Authors: Wang, Haoyu; Liu, Falin; Tao, Wei; Li, Gang
• Is Part Of: Electronics letters. Volume 51:Issue 6(2015)
• Page Start: 514
• Page End: 516
• Publication Date: 2015-03-01
• Subjects: power amplifiers; one step extracting optimal normalisation gain -- digital predistortion linearisation -- normalisation gain -- linearised power amplifiers -- physical logics -- predistortion function unity -- linearity performance; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2014.4216
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : 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.