Block Error Performance of PAM or PPM SIMO FSO Links over Strong Turbulence Channels - Androutsos, N.A.; Nistazakis, H.E.; Stassinakis, A.N.; Chatzikontis, E.V.; Tsigopoulos, AD; Roditi, E.; Tombras, G.S. (2021 10th International Conference on Modern Circuits and Systems Technologies, MOCAST 2021, 2021)