STAR-RIS-aided RSMA for the URLLC multi-user MIMO downlink

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URI: https://hdl.handle.net/10902/39111
ISBN: 979-8-3503-9268-5
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Autoría
Soleymani, Mohammad; Santamaría Caballero, Luis IgnacioAutoridad Unican; Jorswieck, Eduard; Schober, Robert; Hanzo, Lajos
Fecha
2025
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© 2025 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Publicado en
28th International Workshop on Smart Antennas (WSA), Erlangen, Germany, 2025, 85-90
Editorial
Institute of Electrical and Electronics Engineers, Inc.
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Palabras clave
Fractional matrix programming
Interference management
Multi-user MIMO
RSMA
STAR-RIS
URLLC
Resumen/Abstract
Rate splitting multiple access (RSMA) is intrinsically amalgamated with simultaneously transmitting and reflecting (STAR) reconfigurable intelligent surfaces (RIS) to enhance energy efficiency (EE) of the finite block length (FBL) multiple-input multiple-output (MIMO) downlink. An alternating optimization-based algorithm is proposed to jointly optimize the transmit beamforming matrices, STAR-RIS configurations, and rate-splitting parameters. STAR-RIS attains 360–degree fullplane coverage, while RSMA provides a prominent gain by efficiently managing interference. Numerical results reveal a strong synergy between RSMA and STAR-RIS, demonstrating significant EE gains over reflective RIS and spatial division multiple access (SDMA).
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