Examination of signal separation/demodulation method of multi-value modulation sensor terminal signal using STFT in storage batch signal processing

摘要

In this paper, in order to establish the storage batch signal processing technology on the network, the method of separating the IoT/M2M terminal signal that collided or interfered and the method of demodulating the data after signal separation, which cannot be realized by the conventional receivers. We proposed a method of signal separation by feature quantity extraction using short-time Fourier transform and the method of using the obtained feature quantity for demodulation. In addition, the effectiveness of the proposed method for multi-valued modulated signals will be evaluated by computer simulation.