Compensation for Power Amplifier Nonlinearity in the Presence of Local Oscillator Coupling Effects

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We consider the design of a digital predistortion (DPD) scheme when there is a crosstalk between a local oscillator (LO) and a power amplifier (PA) called LO self-coupling. We first develop a baseband equivalent model for a direct conversion transmitter afflicted by LO self-coupling. Based on this model, a two-stage process, consisting of a feedback equalizer (FBEQ) and DPD, is proposed for the joint compensation of PA nonlinearity and LO self-coupling. The advantage of the proposed DPD over conventional DPD is demonstrated through computer simulation.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2012-05
Language
English
Article Type
Article
Keywords

CMOS

Citation

IEEE COMMUNICATIONS LETTERS, v.16, no.5, pp.600 - 603

ISSN
1089-7798
DOI
10.1109/LCOMM.2012.030912.112100
URI
http://hdl.handle.net/10203/101911
Appears in Collection
EE-Journal Papers(저널논문)
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