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The fifth generation is considered as the revolutionary technology around the world, but this revolution brings many challenges along with it, especially when employ the advance properties such as massive multiple-input–multiple-output (MIMO) antennae, network densification and new spectrum exploration etc. One more challenge which we consider working on is the cost effective, secure backhaul communication system. The connection of massive and large traffic cells with the core network by using backhaul demands extraordinary requirements concerning availability, latency, capacity, cost efficiency and most importantly security. In the present work, we demonstrated the security implementation in 5G backhaul network by securing RoF signal through optical chaos generated by semiconductor laser. RoF signal of 60 GHz is generated in unlicensed band and after chaos masking with chaos, signal is transmitted over optical fiber to analyze the results. Simulations are carried out by using licensed software (Optisystem version 14.0) and results are analyzed by using multiple data rates and fiber lengths. Moreover, analysis of our scheme is carried out by using RZ and NRZ formats and by varying the power of the laser.

Secure RoF based 5G backhaul communication using semiconductor laser generated optical chaos