Question: In 5G New Radio (NR), when mapping physical channels to resource elements, what is a key characteristic regarding antenna ports that is supported?
Option 1: Support for all antenna ports (1, 2, 4, and more) is mandatory.
Option 2: Only antenna port 1 is supported for simplicity.
Option 3: Only 1 and 2 antenna ports are supported for this specific mapping.
Option 4: Antenna ports 3 and above are exclusively used for this resource element mapping.
Explanation: This highlights a nuanced detail in the specifications, emphasizing limited support to just two antenna ports when mapping to resource elements, affecting beamforming and MIMO capabilities in NR networks, impacting signal transmission and reception optimization in complex spatial multiplexing scenarios.