Yuandi Wang, Zhiqing Wei, Wei Zhou, Kaifeng Han, Z. Feng
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Triangular FM-OFDM Waveform Design for Integrated Sensing and Communication
The integrated sensing and communication (ISAC) technology will support the development of emerging services such as machine-type communication and immersive services toward the future 5th generation advanced (5G-A) and 6th generation (6G) eras. To satisfy the high-precision sensing requirements inspired by 6G emerging services and increase the communication rate, we exploit the advantages of large time-bandwidth product of linear frequency modulation (LFM) and high spectral efficiency of orthogonal frequency division multiplexing (OFDM), proposing an ISAC waveform combining triangular frequency modulation (FM) and OFDM. The delay-Doppler decoupling radar signal processing scheme is proposed, which obtains better sensing performance than the OFDM based ISAC scheme. Simulation results show that the proposed scheme can achieve high accuracy ranging estimation, and the resolution of velocity estimation is doubly improved compared with the OFDM based ISAC scheme.
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