Evaluation of sensor terminal signal separation performance based on modulation systems in storage-based batch signal processing using STFT

Abstract

In this paper, in order to establish the storage batch signal processing technology on the network, we investigate the signal separation method using feature extraction by Short-time Fourier transform to separate the IoT / M2M terminal signal that collided or interfered which cannot be realized by the conventional receivers. We evaluated the signal separation performance when two signals of BPSK, QPSK, 8PSK, and 16QAM modulation signals interfere with each other, and clarified the effectiveness of our method. Furthermore, we quantitatively evaluated the separation performance for each combination of modulation systems and referred to the way of selecting the desired signal in the separation by this method.