Free Space Optics for 5G and Beyond

For developing countries it is essential to have cost effective, large band width, high data rate network. This can be achieved by Optical wireless channel or free space optics (FSO), which is a new technology in an optical communication system. The proposed network offers almost zero-bit error rate (BER) or error free transmission up to 1.5 Km for a transmitter power of 35 dBm, data rate up to 10Gbps at 1550nm, under clear sky condition. Further, this FSO link is analyzed for natural impairments such as rain, haze and fog. The minimum received power is up to -35dBm, which is received by Ge-PIN-Photo-detector-using NRZ coding. Network is simulated for Rayleigh fading channel.