Multicarrier millimeter wave through wireless optical communication

Optical wireless communication (OWC) is one of the trending matters in the 5G & 6G communication systems and promising technology for the next-generation wireless communication networks. In this paper, a multicarrier of extremely high frequency named millimeter-wave (MM-Wave) system has been designed and investigated. This work proposed a system of high data rate based on a hybrid link of an optical wireless communication channel and radio channels furthermore ensuring higher scalability by using multicarrier technology of MM-waves. The number of multicarrier channels selected is four (35, 55, 75, and 95 GHz) with an amplitude modulation (AM) technique. The link between the home network center (HNC) and a user end (UE) combines two different technologies: the backhaul network of the proposed system is an OWC link transferring the optical signal to an access point then radio links broadcast these multicarrier signals at the last mile. This combination provides a high data rate link in a dense RF access point with less congestion from the traditional RF network. The proposed system has been investigated in a different modulation, aperture diameter, and aperture diameter with pointing error angle. The OWC link is highly vulnerable to atmospheric conditions therefore this article proceeds further with this topic. The results show that the proposed system successfully transmitted data with 40 Gbps over different distances according to the atmospheric conditions. The system performance can be improved by many factors i.e. the operating wavelength, telescope aperture diameter, modulation scheme, etc. The proposed model is simulated by Optisystem software.