The fifth generation (5G) communication networks are supposed to be deployed worldwide since 2020. The coronavirus pandemic has partially limited the placement of this wireless communication towards sixth generation (6G) networks which are expected to provide global coverage and enhanced new transmission technologies. Motivated by the benefit of applying high-frequency millimeter-wave (mm-wave) carriers, which will greatly help in increasing the wireless network capacity, this paper proposes a communication system based on hybrid mm-wave transmission technologies over fiber/free space optical (FSO) backhaul link. Also, this work addresses the challenges when considering mm-waves for the current and futuristic mobile networks. Particularly, the proposed system offers a low latency communication link;also it can cope with the problems of the high path loss that face mm-wave wireless propagation by proposing an mm-wave over FSO instead. Furthermore, this system will increase the network coverage area by transmitting mm-waves to the areas with natural obstacles that are impossible laying fiber cables in it especially with emerging and disaster conditions. The performance of 64 GHz mm-wave over the proposed hybrid transmission link is investigated and the obtained results show that it succeeds in providing 10 Gbits/s with bit error rate (BER) about 1.5×10-13. Thus, it can be considered as a promising solution to overcoming difficulties in futuristic networks. © 2021 IEEE.
Millimeter-Wave Transmission Technologies over Fiber/FSO for 5G+ Networks