  In this paper, we propose a unified SWIPT signal and its architecture design
in order to take advantage of both single tone and multi-tone signaling by
adjusting only the power allocation ratio of a unified signal. For this, we
design a novel unified and integrated receiver architecture for the proposed
unified SWIPT signaling, which consumes low power with an envelope detection.
To relieve the computational complexity of the receiver, we propose an adaptive
control algorithm by which the transmitter adjusts the communication mode
through temporal convolutional network (TCN) based asymmetric processing. To
this end, the transmitter optimizes the modulation index and power allocation
ratio in short-term scale while updating the mode switching threshold in
long-term scale. We demonstrate that the proposed unified SWIPT system improves
the achievable rate under the self-powering condition of low-power IoT devices.
Consequently it is foreseen to effectively deploy low-power IoT networks that
concurrently supply both information and energy wirelessly to the devices by
using the proposed unified SWIPT and adaptive control algorithm in place at the
transmitter side.
