About this Research Topic
There is a strong need for signal processing R&D in the new NTN, which at the same time helps to close the bridge with terrestrial networks: the farther away we move from the physical layer, the more commonalities can be found between space and terrestrial segments. The sharing of radio frequency bands and the dynamic usage of resources allow to operationally reconfigure network connections. In this context, the signal processing in the transmitters, receivers, and network control systems face significant requirements to access frequency resources dynamically, detect interference, optimize the network configuration, and configure the radio resources operationally. Signal processing must be used to leverage the flexibility of resource allocation in NTN, including GEO, MEO and LEO satellites, aerial platforms and even unmmaned aerial vehicles (UAV).
This Collection has the objective of covering novel contributions with emphasis on signal processing techniques in NTN. Prospective authors are invited to submit original manuscripts on the following topics.
Topics of interest include, but are not limited to:
• Advanced signal processing techniques for non-orthogonal multiple-access
• Trade-offs between performance, latency and complexity for the selection of signal processing algorithms
• Software-Defined Radio (SDR) for PHY&MAC and NTN prototypes
• Signal processing techniques based on big data processing
• Signal processing for IoT over NTN
• Role of signal processing on the integration of satellite, airborne platforms and terrestrial networks
• Signal processing for enabling direct access from NTN to User Equipment
• Signal processing for dynamic configuration of radio resources following the traffic needs *
• Signal processing for dynamic access to the spectrum
• Signal processing for realizing Time Division or Full Duplexing in NTN
• Beam management in NTN
• Signal processing for reconfigurable intelligent surfaces
• Characterization of the land mobile aerial and satellite channel at mmWaves
• On-board signal processing for new satellites and aerial platforms
• On-board gNodeB implementation
• Non-geostationary orbit (NGSO) satellites directly accessing NR-enabled User Equipment (UE) in mmWaves
• Signal processing for NTN physical layer security
• Machine learning methodologies for improving traditional signal processing algorithms
• Signal processing for optical NTN communication
Keywords: 5G, Non-Terrestrial Networks, 6G, aerial networks, Space Networks, signal processing
Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.