6G Wireless Communications: From Far-Field Beam Steering to Near-Field Beam Focusing
6G Wireless Communications: From Far-Field Beam Steering to Near-Field Beam Focusing
6G networks will be required to support higher data rates, improved energy efficiency, lower latency, and more diverse users compared with 5G systems. To meet these requirements, electrically extremely large-scale antenna arrays are envisioned to be key physical-layer technologies. As a consequence, it is expected that some portion of future …