Literature Database Entry

wahb2026asynchronous

Sama Wahb, Ahmed El-Mahdy and Falko Dressler, "Asynchronous 2-layer Full-duplex Cooperative RSMA with Imperfect Channel State Information and Imperfect Successive Interference Cancellation," Computers and Electrical Engineering, vol. 136, pp. 111226, August 2026.

Abstract

Sixth-generation (6G) wireless systems require advanced multiple access techniques capable of delivering high data rates, low latency, and robust performance under practical impairments. Rate-Splitting Multiple Access (RSMA) has emerged as a strong candidate due to its efficient interference management and robustness to imperfect Channel State Information (CSI). However, its performance is often limited by the weakest user, and existing cooperative approaches mainly rely on half-duplex relaying and ideal assumptions. In this paper, a downlink full-duplex multi-user 2-layer cooperative RSMA (C-RSMA) framework is proposed under asynchronous reception, imperfect CSI, and imperfect Successive Interference Cancellation (SIC). The 2-layer structure enhances interference mitigation and fairness, while full-duplex relaying improves spectral efficiency. An alternative optimization technique based on Weighted Minimum Mean Square Error (WMMSE) is used to jointly optimize precoding, rate allocation, and relay power to maximize the minimum user rate under latency constraints. Numerical results show that the proposed scheme enhances fairness and robustness over other schemes.

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Sama Wahb
Ahmed El-Mahdy
Falko Dressler

BibTeX reference

@article{wahb2026asynchronous,
    author = {Wahb, Sama and El-Mahdy, Ahmed and Dressler, Falko},
    doi = {10.1016/j.compeleceng.2026.111226},
    title = {{Asynchronous 2-layer Full-duplex Cooperative RSMA with Imperfect Channel State Information and Imperfect Successive Interference Cancellation}},
    pages = {111226},
    journal = {Computers and Electrical Engineering},
    publisher = {Elsevier},
    month = {8},
    volume = {136},
    year = {2026},
   }
   
   

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Last modified: 2026-05-15