In this work. the performance evaluation of Low-Density-Parity-Check (LDPC) based Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) based Free Space Optical (FSO) link with Málaga (Ḿ) channel model is analyzed. The performance in terms of Gain (diversity and combining) analysis $\delta \text{G}$ (N. M) and Bit Error Rate (BER). https://www.socialstudiesscholar.com/