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Low-complexity, full-resolution, mirrorswitching digital predistortion scheme for polar-modulated power amplifiers
W.-H. Yu1; W.-F. Cheng1; Y. Li1; C.-F. Cheang1; P.-I. Mak1; R.P. Martins1,2
2012-11-22
Source PublicationElectronics Letters
ISSN0013-5194
Volume48Issue:24Pages:1551-1552
Other Abstract

Proposed is a mirror-switching digital predistortion (DPD) scheme with low complexity and full resolution, tailored for power-efficient polar-modulated power amplifiers with nonlinear AM-AM and AM-PM characteristics. The involved digital circuitry is composed of just one CORDIC operator and two 1D look-up tables, avoiding any real-time interpolation or analogue operation. The DPD scheme is verified on a FPGA and the estimated power using a 65 nm CMOS technology is 5.2 mW. The training time is 82 ms at a clock rate of 100 MHz. System-level simulations in MATLAB show significant improvements of error vector magnitude from 104.8 to 2%, and adjacent channel leakage ratio from 21.36 to 49.27 dB, under a 20 MHz-bandwidth 64-QAM OFDM test signal.

DOIhttp://doi.org/10.1049/el.2012.2073
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000314296600024
Fulltext Access
Citation statistics
Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Corresponding AuthorP.-I. Mak
Affiliation1.State-Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macao, China
2.Instituto Superior Te´cnico (IST)/TU of Lisbon, Portugal
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
W.-H. Yu,W.-F. Cheng,Y. Li,et al. Low-complexity, full-resolution, mirrorswitching digital predistortion scheme for polar-modulated power amplifiers[J]. Electronics Letters,2012,48(24):1551-1552.
APA W.-H. Yu,W.-F. Cheng,Y. Li,C.-F. Cheang,P.-I. Mak,&R.P. Martins.(2012).Low-complexity, full-resolution, mirrorswitching digital predistortion scheme for polar-modulated power amplifiers.Electronics Letters,48(24),1551-1552.
MLA W.-H. Yu,et al."Low-complexity, full-resolution, mirrorswitching digital predistortion scheme for polar-modulated power amplifiers".Electronics Letters 48.24(2012):1551-1552.
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