Generalized Kramers–Kronig receiver for coherent terahertz communications

  title={Generalized Kramers–Kronig receiver for coherent terahertz communications},
  author={T. Harter and Christoph F{\"u}llner and Juned N. Kemal and Sandeep Ummethala and J. L. Steinmann and Miriam Brosi and J. L. Hesler and Erik Br{\"u}ndermann and Alfred M{\"u}ller and Wolfgang Freude and Sebastian Randel and Christian Koos},
  journal={arXiv: Applied Physics},
High-speed communication systems rely on spectrally efficient modulation formats that encode information both on the amplitude and on the phase of an electromagnetic carrier. Coherent detection of such signals typically uses rather complex receiver schemes, requiring a continuous-wave (c.w.) local oscillator (LO) as a phase reference and a mixer circuit for spectral down-conversion. In optical communications, the so-called Kramers-Kronig (KK) scheme has been demonstrated to greatly simplify the… 

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