Sigma-delta radio over fiber (ςÎ-RoF) is an expedient technology for next-generation networks including 5G cloud/centralized radio access networks (C-RAN). In this article, we demonstrate a realistic experimental scenario for ςÎ-RoF link targeting C-RAN fronthaul applications, by using baseband second-order 1-bit sigma-delta modulation (ςÎ-M). The experimental set-up validates the LTE 20 MHz signals having modulation order of 256-quadrature amplitude modulation for a carrier frequency of 3 GHz, up to 10 km of standard single mode fiber. A detailed analysis of the ςÎ-RoF system performance is reported by adjacent channel leakage ratio and error vector magnitude. Furthermore, an experimental study is evaluated where ςÎ-RoF is compared with its counterparts. It is deduced that ςÎ-RoF corroborates the present range of C-RAN fronthaul networks and can be a promising candidate for future mobile haul applications.
Experimental evaluation of real-time sigma-delta radio over fiber system for fronthaul applications
Hadi M. U.;Traverso P. A.;Tartarini G.
2021
Abstract
Sigma-delta radio over fiber (ςÎ-RoF) is an expedient technology for next-generation networks including 5G cloud/centralized radio access networks (C-RAN). In this article, we demonstrate a realistic experimental scenario for ςÎ-RoF link targeting C-RAN fronthaul applications, by using baseband second-order 1-bit sigma-delta modulation (ςÎ-M). The experimental set-up validates the LTE 20 MHz signals having modulation order of 256-quadrature amplitude modulation for a carrier frequency of 3 GHz, up to 10 km of standard single mode fiber. A detailed analysis of the ςÎ-RoF system performance is reported by adjacent channel leakage ratio and error vector magnitude. Furthermore, an experimental study is evaluated where ςÎ-RoF is compared with its counterparts. It is deduced that ςÎ-RoF corroborates the present range of C-RAN fronthaul networks and can be a promising candidate for future mobile haul applications.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.