BER analysis of 40 Gbps Ro-FSO Communication System for 5 G applications under Fog Weather Conditions

Higher data rates demand is a really great challenge in these days with never ending increasing number of user day by day. Many technologies are emerging to meet these needs with improved data rates and security. Milli meter waves when coupled with Free Space Optics (FSO) gives Radio over-FSO (Ro-FSO) system an excellent performance and can be deployed very easily. This work is centric on the performance analysis of a proposed system under fog weather conditions. The proposed system comprises of four independent channels which has 10 Gbps data rate. These channels are transmitted on a 40 GHz radio signal at a free space distance of 1000 meters. On-Off Keying (OOK) technology is employed in the proposed system and the Bit Error Rate (BER) performance is analysed at no fog, weak fog, moderate fog and strong fog weather conditions. The performance analysis is done for two encoding schemes namely Non-Return-to-Zero (NRZ) and Return-to-Zero (RZ). The results are compared and tabulated.