The project is characterized as research because new techniques for fifth-generation (5G) cellular networks will be sought. These techniques can be developed or adapted from pre-existing ones, within three lines of investigation. These lines of investigation are emerging topics and addressed in several IEEE scientific articles. The first line concerns compression techniques for transporting signals in the network segment called fronthaul in 5G networks. Compression techniques for 5G operating with multiple antenna transmission techniques and within the O-RAN context will be investigated. The second line of investigation seeks to develop synchronization techniques via packet networks using the IEEE 1588 protocol in networks without support for this protocol. The first and second lines of investigation refer to the continuation of topics investigated in previous projects in the context of the Ericsson and UFPA partnership. Thus, the previously developed techniques will be adapted and improved to meet the work plan of the current project. In addition, new techniques with a focus on computational intelligence may be developed. The third line of investigation deals with multiple antenna techniques using machine learning.