Sung Hyun Bae

We investigate the feasibility of implementing a mobile fronthaul network (MFN) based on the radio-over-fiber (RoF) technology for fifth generation wireless communication systems cost effectively by using either directly modulated lasers (DMLs) or electroabsorption modulated laser (EMLs) operating in the 1.55-μm window. Expand

We propose and demonstrate a simple composite second-order (CSO) cancellation technique based on the digital signal processing (DSP) for the radio-over-fiber (RoF) transmission system implemented by using directly modulated lasers (DMLs). Expand

We report on technical challenges associated with the use of directly modulated lasers in the mobile fronthaul networks based on radio-over-fiber (RoF) technology. Expand

We propose to utilize the filtered Gaussian phase dither technique for the effective suppression of the multipath- interference (MPI) noises caused by multiple bad fiber connectors in the mobile fronthaul network (MFN) based on the radio-over- fiber (RoF) technology. Expand

We report on the adaptive cancellation technique of the dispersion-induced composite second-order (CSO) distortions for use in radio-over-fiber systems implemented by using directly modulated lasers (DMLs). Expand

We demonstrate the transmission of twelve 360-MHz filtered-OFDM signals in 64-QAM format over 20 km of SSMF by using a 1.55-µm directly modulated laser and a DSP-based composite second-order cancellation technique. Expand

We demonstrate the mitigation of MPI noises in the RoF-based mobile fronthaul network by using high-frequency phase dither. Expand

We propose a DSP-based nonlinearity compensation technique for RoF links which does not require any prior knowledge about the links and successfully transport twelve 198-MHz-bandwidth 64-QAM f-OFDM signals over 20 km of SSMF. Expand