TY  - JOUR
T1  - Deep Learning-Based Separation Technique for Radar-Communications Overlapping Signals
AU  - Lee, Si-Ho 
AU  - Jung, Suk-Hyun 
AU  - Jung, Jae-Yeon 
AU  - Nam, Hae-Woon 
JO  - The Journal of Korean Institute of Communications and Information Sciences
PY  - 2024
DA  - 2024/1/1
DO  - 10.7840/kics.2024.49.5.711
KW  - Deep learning
KW  - Time-Frequency Analysis
KW  - Communication Signal
KW  - Signal Restoration
AB  - The advancement of wireless communication technology has led to increased signal interference between signals, negatively affecting the quality and reliability of communication. To address such issues, signal processing algorithms like frequency filtering and spatial separation have been developed, yet their performance significantly degrades in environments with completely overlapping frequencies. This paper proposes a method using the deep learning model U-Net to separate overlapping signals and restore the original signals. 1D I/Q data was transformed into 2D time-frequency images through the application of the STFT algorithm, and the U-Net model was employed to segregate the overlapping signals. The goal was to restore the communication signal, and a BER of   or less was guaranteed for the BPSK signal at a SIR of -29 dB to 0 dB.