# Harnessing the Potential of Emerging Technologies to Break Down Barriers in Tactical Communications
### Background  
A review of the literature is carried out to contextualize and identify the gaps in this analysis with the sake of identifying the possible technologies to renew communications in tactical scenarios. Table 1 contains the main surveys related to this proposal. The following criteria were taken into account in the analysis:  
1. Legacy criteria: works that have considered the state of tactical radios and current waveforms for military communications.
2. Fifth-generation technologies criteria: works that consider explanations of the bases of the new emerging technologies with 5G but applied and explained from the point of view of military needs or tactical communications.
3. Sixth generation technologies criteria: works that begin to consider the technologies that are being proposed for the future 6G.
4. Use case criteria: relate and explain the application of 5G technologies to the different use cases within military operations where telecommunications systems are used.  
As seen in Table 1, no survey includes and collects information about waveforms and tactical radio. This is an important gap since, to renew and improve current tactical radios, we need to know the properties of those waveforms used in transmission in a current scenario. There are also no works that consider possible technologies for 6G, such as neuromorphic processes and digital twins. Likewise, no proposal talks about the options of artificial intelligence in tactical scenarios.  
Regarding the application of 5G, we partially found works that have considered this integration in military communications. Rather, they have not had all the possible technologies and have not related their application to the use cases within a mission. The work in [11] focuses on explaining the characteristics of 5G, not the component technologies. The focus is on the new radio (NR) and the virtualization properties of the core. Also, ref. [11] does not go into detail on tactical missions. Similarly, ref. [12] focuses on the radio part, in this case, analysis of a classic multi-antenna system. He does not consider new signal processing such as those proposed in this work to solve the inconveniences posed by the growing number of antennas used by these systems in NR. Ref. [13] focuses on the spectral part, analyzing the new spectral bands that 5G implies. Ref. [14] only presents an overview of the fundamental technologies of 5G that only include unmanned aerial vehicles (UAVs) for military application without going into the details of the use. In [15], an overview of 5G is presented, where the possibility of application in tactical scenarios is mentioned. Finally, ref. [16] presents a 5G proposal for security networks as required by the tactical scenarios. Instead, this work is focused more on public networks compared to military networks.  
Concerning the use cases, there is also no other work to our knowledge that analyzes the use case options with 5G and 6G. Only [11,13] consider the tactical scenarios. However, these proposals do not show the relation between technology and the use case.