A consideration and trial production about FPU apply to LDM

Abstract

LDM (Layered Division Multiplexing) method has been proposed as one of techniques for improving frequency utilization efficiency. LDM is a transmission method for power hierarchy multiplexing with a power difference for a plurality of signals on the same time an d on the same frequency and standardized method also in ATSC 3.0. This time, we show the characteristics of LDM by simulation, confirm the operation principle of LDM using trial production with LDM method applied to FPU (Field Pickup Unit) device, and clarify the possibility of further development of FPU device.