Radio-over-Fiber Systems with 1-bit Digital Modulation for 5G/6G Indoor Wireless Communication

This paper introduces the radio-over-fiber systems with the two novel 1-bit digital modulators: a phase-modulated-clocking envelope ΔΣ modulator and an all-digital outphasing modulator. By these modulators, radio-over-fiber systems are realized with commercially available optical devices for digital communication systems in low cost. The simulation results show that these modulators are verified to comply with the 3GPP ACLR specifications for 100 MHz OFDM signal.