Braun, R.-P.R.-P.BraunGrosskopf, G.G.GrosskopfMeschenmoser, R.R.MeschenmoserRohde, D.D.RohdeSchmidt, F.F.SchmidtVillino, G.G.Villino2022-03-032022-03-031997https://publica.fraunhofer.de/handle/publica/19174210.1049/el:199709442-s2.0-0031188904Bidirectional 140 Mbit/s OQPSK-signal transmission with remotely generated microwaves applying optical heterodyning is reported. Two microwave carriers in the 18-20 GHz band are generated: one modulated by the downlink data, the other unmodulated and used as the local oscillator signal for the uplink mixer in the base station.eninjection locked oscillatorsmicrowave generationmobile communicationquadrature phase shift keyingbidirectional broadband mobile communicationsoptical sideband injection lockingoqpsk-signal transmissionoptical heterodyningmicrowave carriersdownlink datalocal oscillator signaluplink mixerbase station621384journal article