Multi-carrier LINC amplifier calibration by min-minimum criterion
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In this paper, we briefly introduce the LINC amplifier, and discuss its mismatch issues that reduce its linearity and degrade its performance. A calibration approach for the LINC amplifier is proposed for multi-carrier system applications such as OFDM systems. The technique estimates the LINC amplifier calibration coefficient from the LINC amplifier output signal envelope by using a min-minimum criterion. Computer simulations are carried out to validate the proposed LINC amplifier calibration approach. It is demonstrated that the calibration coefficient can be accurately determined, and the mismatch compensated, by the proposed approach, so that the LINC amplifier performance can be significantly improved.
[1] Mario Caron,et al. Statistics-based LINC amplifier calibration , 2012, 2012 IEEE International Symposium on Circuits and Systems.
[2] Joy Laskar,et al. Emerging multi-level architectures and unbalanced mismatch calibration technique for high-efficient and high-linear LINC systems , 2010, Proceedings of 2010 IEEE International Symposium on Circuits and Systems.
[3] An-Yeu Wu,et al. DSP engine design for LINC wireless transmitter systems , 2006, 2006 IEEE International Symposium on Circuits and Systems.