RIS-Enabled Self-Interference Elimination in Monostatic Full-Duplex DFRC Systems

WU, Linlong; XIAO, Zichao; MYSORE RAMA RAO, Bhavani Shankar; OTTERSTEN, Björn

doi:10.1109/ICASSP49660.2025.10890380

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RIS-Enabled Self-Interference Elimination in Monostatic Full-Duplex DFRC Systems

WU, Linlong; XIAO, Zichao; MYSORE RAMA RAO, Bhavani Shankar et al.

2025 • In Proceedings of the 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP))

Peer reviewed

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https://hdl.handle.net/10993/66529

DOI
10.1109/ICASSP49660.2025.10890380

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Keywords :

ISAC; full-duplex DFRC; self-interference (SI); reconfigurable intelligent surface (RIS)

Abstract :

[en] A key challenge in Integrated Sensing and Communications (ISAC), especially in Full-Duplex (FD) Dual-Functional Radar-Communication (DFRC) systems, is self-interference (SI) caused by signal leakage from the transmitter to the receiver, impairing sensing tasks. Reconfigurable Intelligent Surface (RIS) can manipulate signal reflections with minimal power, making them promising for enhancing 6G communication, yet its potential for SI mitigation in DFRC systems is underexplored. This paper proposes a novel RIS-enabled approach for SI elimination in mono-static full-duplex DFRC systems. Our method decomposes the RIS function into spatial beamforming and temporal modulation to ensure sufficient target illumination and orthogonality between reflected and transmitted waveforms, effectively eliminating SI without the need for SI channel information. Simulations confirm the effectiveness of the proposed approach in SI elimination and sensing performance.

Disciplines :

Electrical & electronics engineering

Author, co-author :

WU, Linlong ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust > SPARC > Team Bhavani Shankar MYSORE RAMA RAO

XIAO, Zichao ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SPARC

MYSORE RAMA RAO, Bhavani Shankar ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SPARC

OTTERSTEN, Björn ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > PI Ottersten

External co-authors :

Language :

English

Title :

RIS-Enabled Self-Interference Elimination in Monostatic Full-Duplex DFRC Systems

Publication date :

06 April 2025

Event name :

ICASSP 2025 - 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

Event place :

Hyderabad, Ind

Event date :

06-04-2025 => 11-04-2025

Audience :

International

Main work title :

Proceedings of the 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP))

Publisher :

Institute of Electrical and Electronics Engineers Inc.

Peer reviewed :

Peer reviewed

Additional URL :

http://xplorestaging.ieee.org/ielx8/10887540/10887541/10890380.pdf?arnumber=10890380

Funders :

IEEE
IEEE Signal Processing Society

Funding text :

This work was supported by the Luxembourg National Research Fund (FNR) through the BRIDGE project S3 under grant C22/IS/17412681/S3.

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since 26 November 2025

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