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Author

Qiang Zhao

China Academy of Space Technology
Bio: Qiang Zhao is an academic researcher from China Academy of Space Technology. The author has contributed to research in topics: Signal & Quadrature amplitude modulation. The author has co-authored 1 publications.
Topics: Signal, Quadrature amplitude modulation, Modulation, QAM, Signal-to-noise ratio
Papers
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Proceedings Article•DOI•
Photonic generation of high order uniform QAM signals based on IQ modulators

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Qiang Zhao1•
China Academy of Space Technology1
05 Jan 2017
TL;DR: In this article, a pre-distortion algorithm of generating driving signals was proposed for high-order QAM modulation based on IQ modulator, and driving by non-uniform signals was employed.
Abstract: A pre-distortion algorithm of generating driving signals was proposed for high-order QAM modulation based on IQ modulator. IQ modulator working in the nonlinear area and driving by non-uniform signals was employed. The pre-distorted driving signal requires lower signal-to-noise ratio than the common uniform driving signal in QAM modulation.