System design for a SAC OCDMA-FSO network

Abstract

Over the last two decades free space optics (FSO) have turned out to be increasingly fascinating as an alternative to radio frequency communication which can support longer distance and provides higher bandwidth. An Optical code division multiple access (OCDMA) over the FSO communication system is very beneficial to offer high data rate transmission with very low bit rate error (BER) and low amount of multiple access interference (MAI). With a specific end goal to build the number of users and data rate, and to reduce the impact of MAI, this study proposes the OCDMA frameworks. With spectral amplitude coding (SAC) scheme based on zero cross correlation (ZCC) code. This manuscript describes the system SAC OCDMA over FSO communication using pseudo orthogonal (PSO) matrix code is compared to the new zero cross correlation (NZCC) code in terms of BER and Q value at 2.5 Gbps. The simulative results signifies that the optical module based on OCDMAZCC code is better than the system employing PSO matrix code considering the multiple number of users for two different data formats return to zero (RZ) and non-return to zero (NRZ) and different divergences in the range up to 15 km. The simulation is validated through the optisystem software version 14.