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Rate-Splitting Multiple Access for Simultaneous Multi-User Communication and Multi-Target Sensing
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DOI：10.1109/TVT.2024.3383657.png)
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In this paper, we initiate the study of rate-splitting multiple access (RSMA) for a mono-static integrated sensing and communication (ISAC) system, where the dual-functional base station (BS) simultaneously communicates with multiple users and detects multiple moving targets. We aim at optimizing the ISAC waveform to jointly maximize the max-min fairness (MMF) rate of the communication users and minimize the largest eigenvalue of the Cram & eacute;r-Rao bound (CRB) matrix for unbiased estimation. The CRB matrix considered in this work is general as it involves the estimation of the angular direction, the complex reflection coefficient, and the Doppler frequency for multiple moving targets. Simulation results demonstrate that RSMA maintains a larger communication and sensing trade-off than conventional space-division multiple access (SDMA) and it is capable of detecting multiple targets with a high detection accuracy. The finding highlights the potential of RSMA as an effective and powerful strategy for interference management in the general multi-user multi-target ISAC systems.
Keyword:
Sensors
Radar
Measurement
Interference
Doppler effect
Vectors
Estimation
Cram & eacute
r-Rao bound (CRB)
integrated sensing and communications (ISAC)
MIMO radar
rate-splitting multiple access (RSMA)
期刊
IF:
7.1
论文数:
1.8W
被引数:
6.6W
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