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

@article{Ahn2012CompensationFP,
  title={Compensation for Power Amplifier Nonlinearity in the Presence of Local Oscillator Coupling Effects},
  author={Seung Hyeok Ahn and Sungho Choi and Eui-Rim Jeong and Yong Hoon Lee},
  journal={IEEE Communications Letters},
  year={2012},
  volume={16},
  pages={600-603}
}
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… CONTINUE READING
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