@ARTICLE{Ilgaz_M._A._A_2020, author={Ilgaz, M. A. and Vuk Baliž, K. and Batagelj, B.}, volume={28}, number={1}, journal={Opto-Electronics Review}, pages={35-42}, howpublished={online}, year={2020}, publisher={Polish Academy of Sciences (under the auspices of the Committee on Electronics and Telecommunication) and Association of Polish Electrical Engineers in cooperation with Military University of Technology}, abstract={This article proposes and examines a solution in which the base-station for the fifth generation radio access network is simplified by using a single millimeter-wave oscillator in the central-station and distributing its millimeter-wave signal to the base-stations. The system is designed in such a way that the low-phase-noise signal generated by an opto-electronic oscillator is transmitted from the central-station to multiple base-stations via a passive optical network infrastructure. A novel flexible approach with a single-loop opto-electronic oscillator at the transmitting end and a tunable dispersion-compensation module at the receiving end(s) is proposed to distribute a power-penalty-free millimeter-wave signal in the radio access network. Power-penalty-free signal transmission from 10 MHz up to 45 GHz with an optical length of 20 km is achieved by a combination of a tunable dispersion-compensation module and an optical delay line. In addition, measurements with a fixed modulation frequency of 39 GHz and discretely incrementing optical fiber lengths from 0.625 km to 20 km are shown. Finally, a preliminary idea for an automatically controlled feedback-loop tuning system is proposed as a further research entry point.}, type={Article}, title={A flexible approach to combating chromatic dispersion in a centralized 5G network}, URL={http://www.journals.pan.pl/Content/115766/PDF/OPELRE_2020_28_1_M_A_Ilgaz.pdf}, doi={10.24425/opelre.2020.132498}, keywords={chromatic dispersion, opto-electronic oscillator, power penalty, radio access network, tunable dispersion-compensation module}, }