On Target Detection in the Presence of Clutter in Joint Communication and Sensing Cellular Networks
arxiv(2024)
摘要
Recent works on joint communication and sensing (JCAS) cellular networks have
proposed to use time division mode (TDM) and concurrent mode (CM), as
alternative methods for sharing the resources between communication and sensing
signals. While the performance of these JCAS schemes for object tracking and
parameter estimation has been studied in previous works, their performance on
target detection in the presence of clutter has not been analyzed. In this
paper, we propose a detection scheme for estimating the number of targets in
JCAS cellular networks that employ TDM or CM resource sharing. The proposed
detection method allows for the presence of clutter and/or temporally
correlated noise. This scheme is studied with respect to the JCAS trade-off
parameters that allow to control the time slots in TDM and the power resources
in CM allocated to sensing and communications. The performance of two
fundamental transmit beamforming schemes, typical for JCAS, is compared in
terms of the receiver operating characteristics curves. Our results indicate
that in general the TDM scheme gives a somewhat better detection performance
compared to the CM scheme, although both schemes outperform existing approaches
provided that their respective trade-off parameters are tuned properly.
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