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Consider a mixed MIMO-RF / FSO DF cooperative relay network. -Relais is better than that of the Source-Destination channel (𝑆𝑁𝑅𝑆-𝑅 > 𝑆𝑁𝑅𝑠-𝐷)) in which the source is equipped with several 𝑁_𝑇 antennas communicate with the destination via a node an intermediate relay in the presence of a receiver equipped with several 𝑁_𝑅 antennas as shown in Fig. 1. The communication channel between the source node and the relay node is a Rayleigh fading MIMO RF link, with the source and relay nodes equipped respectively with transmit 𝑁_𝑇 and receive 𝑁_𝑅 antennas. Unlike the AF protocol, the relay first decodes the symbols transmitted during the first phase using the error correcting codes particularly the GC-LDPC codes and retransmits them to the destination via an FSO link in the next phase. To allow point-to-point FSO communication, the relay and the destination are assumed to be equipped with a single photo-opening transmitter and a single photo-detector, respectively.
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IEEE/ICACT20210117 Slide.09
[Big Slide]