Nova topologia de rede óptica passiva para a interface com as redes wireless 5G

Abstract

This article introduces a new passive optical network topology (PON) which capacity is compatible to the aggregated data traffic demand of the future 5G wireless networks. The employment of the optical access network enables to reduce the bandwidth required to support the aggregated demand of 3G, 4G and 5G wireless users when compared to the digital multiplexing technique used by the wireless access networks, by sharing one or more channels of the PON network, with minimum impact over the normal data traffic regarding the PON users. The proposed topology operates in the O-band (1310 nm transmission window) and uses direct modulated lasers (DML), NRZ transmission (Non-Return to Zero) and coherent detection, without optical amplification, technical characteristics compatible even with the expansion of the aggregated traffic of the 5G wireless networks, e.g., to support the increase of the IoT (internet of things) applications, with no incremental cost which would be needed to improve the capacity of the optical network.