20.1-km D-band Wireless Transmission Enabled by CVMSO NN Equalizer in Photonics-aided Coherent MMW Systems

We demonstrate D-band 2-GBaud Quadrature Phase Shift Keying (QPSK) signal transmission over a $20.1-\mathrm{km}$ wireless link at $125-\mathrm{GHz}$ in a photonics-assisted millimeter wave coherent communication system using complexed-valued multi-symbol output (CVMSO) neural network (NN) nonlinear equalizer with $1.8-\mathrm{dB}$ gain under $15 \%$ soft-decision forward error correction (SD-FEC) threshold. © 2024 The Author(s)