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This paper proposes a simplified algorithm for linearizing MIMO nonlinear systems. The linearization technique is designed for MIMO systems with nonlinear cross-talk. The new algorithm relies on estimating the coupling factor and building the 2×2 DPD based on two 1×1 DPDs. The algorithm is around two times faster than the conventional method whilst the performance is reasonably close to the conventional...
In this paper we propose a novel behavioral model for multiple input, multiple output (MIMO) nonlinear transmitters in the presence of I/Q modulator's imperfections. A joint model is proposed for hardware impairments and distortion of MIMO wireless transmitters. These imperfections originate from the modulator's I/Q imbalance, DC offset, PA's nonlinearity and the crosstalk or coupling effects induced...
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