Adaptive compensation for power amplifier nonlinearity in the presence of quadrature modulation/demodulation errors

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This correspondence proposes techniques that jointly compensate for amplifier nonlinearity and quadrature modulation/demodulation (QM/QDM) errors. The proposed methods are derived based on the polynomial predistortion (PD) employing the indirect learning technique and do not require any additional feedback loop for QM/QDM-error compensation. Compared with the existing joint compensation technique, the proposed methods need some additional parameters to be estimated but exhibit faster convergence and better performance. The advantage of the proposed technique is demonstrated through computer simulation.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2007-09
Language
English
Article Type
Article
Keywords

COMMUNICATION RECEIVERS; I/Q MISMATCH; DC OFFSET; LINEARIZATION; PREDISTORTER; POLYNOMIALS; ADAPTATION; MODULATORS; FREQUENCY

Citation

IEEE TRANSACTIONS ON SIGNAL PROCESSING, v.55, no.9, pp.4717 - 4721

ISSN
1053-587X
DOI
10.1109/TSP.2007.896261
URI
http://hdl.handle.net/10203/12334
Appears in Collection
EE-Journal Papers(저널논문)
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