Guest Editorial Special Issue on Inter-Tower Communications and Networks

The ever increasing demand for new applications, and the augmented consumption of high-data-rate multimedia services are the driving forces for wireless communication systems’ evolution. In particular, the latest use cases, such as augmented/virtual reality and unmanned mobility, request a considerable enhancement in performance since system capacity above 1 Tb/s, 99.99999 percent reliability, and latency below 1 ms are required
[9]
,
[10]
,
[11]
. Undoubtedly, the research community has achieved many remarkable advances in different areas to approach the requirements, such as coding schemes
[12]
,
[13]
,
[14]
, multiplexing schemes
[15]
,
[16]
, Multiple-Input Multiple-Output (MIMO) schemes
[17]
,
[18]
, or modulation schemes
[19]
,
[20]
. Nevertheless, the performance of traditional signal processing techniques is already very close to the Shannon limit, so the margin for further improvement at the Physical Layer (PHY) is minimal.