We also conducted R&D on a Time-Division Multiplexing (TDM) system, which is different from the Frequency-Division Multiplexing (FDM) system currently in use, we investigated use of 5th-Generation ...

Additionally, we researched and developed a method using Time Division Multiplexing (TDM) that differs from existing methods using Frequency Division Multiplexing (FDM), investigated the use of ...