Luis Vallejo, a PhD student from Instituto de Telecomunicaciones y Aplicaciones Multimedia, Universitat Politecnica de Valencia (Spain), made a stay in Czech Technical University in Prague (Czech Republic), under the supervision of Stanislav Zvanovec, aiming to advance method in microwave photonics, during 35 days. During his STSM he worked on photonically millimetre signal generation, signal transmission over hybrid fiber/free-space-optics (FSO) links considered as a promising solution in the cloud radio access network (C-RAN) in 5G, and evaluation of the impact of turbulences on the FSO link. Furthermore, current and future collaboration between the two research groups have been consolidated.