Spectral-spatial coding and turbulence-aware modulation strategies for ultra-reliable dense WDM hybrid MIMO-RF free space optical communication networks

Abstract A turbulence flexible hybrid communication structure that adds free space optical (FSO), multi-output (MIMO) and dense wavelength division multiplexing (DWDM) links with an adaptive radio frequency (RF), presented in this article. In order to reduce turbulence and gesture to reduce atmospheric losses such as gamma-old, a two-layer spectral-sustainable coding form and disturbance-zeal adaptive modulation are suggested. Continuous coupling accessibility and reliability are ensured by dynamic switching of the system between optical and RF paths based on real-time information (CSI). Bit error rate (BER) is confirmed by Monte Carlo simulation in MATLAB. During the strong disturbance, the proposed architecture holds less than 10 −3 , while under weak disturbance it maintains more than 4 bits/s/Hz. According to the results, “the proposed architecture is a strong candidate for future back-hauls with high capacity, satellites and final-meal access networks applications such as the spectral stable variety and integration of adaptive modulation increases the strength of the system in unfavorable optical wireless conditions since the integration of intermediate diversity conditions.