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A novel digital predistortion technique for class-E PA with delay mismatch estimation
U-Wai Lok2; Pui-In Mak2; Wei-Han Yu2; R. P. Martins1,2
2011-11
Conference Name2011 Asia Pacific Conference on Postgraduate Research in Microelectronics & Electronics
Source PublicationAsia Pacific Conference on Postgraduate Research in Microelectronics and Electronics
Pages119-122
Conference Date6-7 Oct. 2011
Conference PlaceMacau, China
Abstract

This paper proposes a polynomial-based adaptive digital predistortion (DPD) method with delay mismatch estimation for the class-E power amplifier (PA), which can compensate the AM-AM and the strong AM-PM distortion produced by the switching operation of class-E PA. On the other hand, due to the strict requirement of timing alignment in polar transmission, a low-complexity correlation-based scheme for delay mismatch estimation and compensation filter is developed. Simulation results confirmed that the proposed DPD can improve the EVM performance from 5.67% to 0.72%, leading also to 18 dB rejection of spectrum re-growth under the condition of perfect timing alignment. The results also reveal that our proposed method of digital predistortion with delay mismatch estimation, as well as delay mismatch compensation has 1% EVM improvement as compared with applying DPD method directly without timing alignment. 

DOI10.1109/PrimeAsia.2011.6075085
URLView the original
Language英語English
Scopus ID2-s2.0-82455175764
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Citation statistics
Document TypeConference paper
CollectionTHE STATE KEY LABORATORY OF ANALOG AND MIXED-SIGNAL VLSI (UNIVERSITY OF MACAU)
Faculty of Science and Technology
INSTITUTE OF MICROELECTRONICS
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Affiliation1.Instituto Superior Técnico
2.Universidade de Macau
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
U-Wai Lok,Pui-In Mak,Wei-Han Yu,et al. A novel digital predistortion technique for class-E PA with delay mismatch estimation[C], 2011, 119-122.
APA U-Wai Lok., Pui-In Mak., Wei-Han Yu., & R. P. Martins (2011). A novel digital predistortion technique for class-E PA with delay mismatch estimation. Asia Pacific Conference on Postgraduate Research in Microelectronics and Electronics, 119-122.
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