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Motivated by advanced-generation signals and corresponding trends for multiband, broadband, and ultra-wideband transmitters, several models have recently been proposed for digital predistortion in a dual-band concurrent transmission. These state-of-the-art models assume that two frequencies of operation are uncorrelated and harmonic products can be filtered out. However, when the harmonic of one signal...
With upcoming trends of multiband, broadband and ultrawideband transmitters, there is a need for understanding and representing nonlinear transmitter behavior at system level at frequencies other than transmitter frequency, which might fall within the working range of ultra wideband power amplifier (PA) or other PAs. This paper presents characterization setup, data time-alignment technique and modeling...
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