MIMO Enabled MultiBand 5G NR FiberWireless using Sigma Delta over FiberTechnology

This paper introduces the realization and evaluation of multi input multi output (MIMO) wireless system and fiber based sigma delta Radio-over-Fiber (∑Δ-RoF)based optical link as a front haul using fifth generation (5G) new radio (NR) multiband signals. The proposed 5G NR signals comprise of 3 GHz flexible waveforms and 23 GHz-400 MHz bandwidth. The ∑Δ-RoF has been demonstrated by using 2nd order Sigma-Delta Modulation (SDM) with 5 km of Standard Single Mode Fiber. The EVM performance for the system meets the 3GPP Release 16. Furthermore, EVM performance for received optical power is evaluated up to 400 MHz bandwidth. It can be concluded that ∑Δ-RoF-MIMO system suits the required range of the 5G C-RAN fronthaul networks and can be a propitious candidate for future mobile haul applications.