Rate-Splitting Multiple Access for Cell-Free ISAC Massive MIMO systems

CAMANA ACOSTA, Mario Rodrigo; GARCIA MORETA, Carla Estefania; Lee, Inkyu

doi:10.1109/LCOMM.2025.3617578

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Rate-Splitting Multiple Access for Cell-Free ISAC Massive MIMO systems

CAMANA ACOSTA, Mario Rodrigo; GARCIA MORETA, Carla Estefania; Lee, Inkyu

2025 • In IEEE Communications Letters, p. 1-1

Peer Reviewed verified by ORBi

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https://hdl.handle.net/10993/66964

DOI
10.1109/LCOMM.2025.3617578

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Keywords :

Cell-Free massive MIMO; integrated sensing and communication (ISAC); rate-splitting multiple access (RSMA); Transmit beamforming

Abstract :

[en] This paper investigates rate-splitting multiple access (RSMA) in a cell-free massive multi-input multi-output (MIMO) system with integrated sensing and communication (ISAC). In this sytem model, we consider the maximization of the minimum rate subject to radar sensing constraints and a maximum power budget. A successive convex approximation based scheme is developed to solve the non-convex problem by optimizing the precoding vectors for radar and communication, as well as the common rate variables. Numerical results show the superior performance of the proposed RSMA method over conventional cell-free massive MIMO schemes under different scenarios with varying numbers of APs, antennas, and users.

Disciplines :

Electrical & electronics engineering

Author, co-author :

CAMANA ACOSTA, Mario Rodrigo ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom

GARCIA MORETA, Carla Estefania ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom

Lee, Inkyu ; Korea University, School of Electrical Engineering, Seoul, South Korea

External co-authors :

yes

Language :

English

Title :

Rate-Splitting Multiple Access for Cell-Free ISAC Massive MIMO systems

Publication date :

06 October 2025

Journal title :

IEEE Communications Letters

ISSN :

1089-7798

eISSN :

1558-2558

Publisher :

Institute of Electrical and Electronics Engineers Inc.

Pages :

1-1

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://ieeexplore.ieee.org/abstract/document/11192472

Funders :

NRF - National Research Foundation of Korea

Funding number :

RS-2022-NR070834

Funding text :

This work was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) under Grant RS-2022-NR070834, and in part by the Institute of Information and Communications Technology Planning and Evaluation (IITP) Grants by MSIT under Grant 2021-0-00467.

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since 23 December 2025

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