CSI-based NOMA for Integrated Sensing and Communication

Integrated sensing and communication (ISAC) is a key enabler of beyond fifth-generation networks and a multitude of futuristic applications. However, the coexistence, scheduling and spectrum scarcity issues due to additional sensing signals are valid concerns. A communicating device requiring sensin...

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Bibliographic Details
Published in:IEEE wireless communications letters 2023-06, Vol.12 (6), p.1-1
Main Authors: Memisoglu, Ebubekir, Turkmen, Halise, Ozbakis, Basak Ak, Arslan, Huseyin
Format: Article
Language:English
Subjects:
Channel estimation
channel state information (CSI)
Communication
Complexity
Integrated sensing and communication
iterative channel estimation
NOMA
non-orthogonal multiple access (NOMA)
OFDM
Receivers
Sensors
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Summary:Integrated sensing and communication (ISAC) is a key enabler of beyond fifth-generation networks and a multitude of futuristic applications. However, the coexistence, scheduling and spectrum scarcity issues due to additional sensing signals are valid concerns. A communicating device requiring sensing can use its communication signal for sensing. However, a non-communicating device requiring sensing will need to transmit additional sensing signals, increasing traffic in the network. Thus, in this letter, a novel ISAC with iterative channel estimation (ISAC-ICE) method is proposed to provide spectral efficiency while maintaining sensing and communication performance. The proposed method attains this by enabling the multi-channel estimation from received non-orthogonal communication and sensing signals for uplink transmission. The simulation results and complexity analysis demonstrate that the proposed method enables non-orthogonal multiple accessing (NOMA) of ISAC with a linearithmic complexity.
ISSN:2162-2337
2162-2345
DOI:10.1109/LWC.2023.3262280