5 Gbit/s real-time processing using π/4-shift DQPSK for bidirectional radio-over-fibre system. - Kai Habel; Luz Fernandez del Rosal; Stefan Weide; Jonas Hilt; Volker Jungnickel; Robert Elschner; Colja Schubert; Felix Frey; Johannes Karl Fischer; Ronald Freund (ICTON, 2015)

100G OFDM-PON for converged 5G networks: From concept to real-time prototype. - Kai Habel; Matthias Koepp; Stefan Weide; Luz Fernandez del Rosal; Christoph Kottke; Volker Jungnickel (OFC, 2017)