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A Method to Maximize the Minimum User Rate for Full-Duplex RSMA Systems
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Xinji TIAN1, Long CHEN1, Xiaojing LI2
Journal of Beijing University of Posts and Telecommunications | 2025, 48(5) : 91 - 97
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Journal of Beijing University of Posts and Telecommunications | 2025, 48(5): 91-97
• PAPERS •
A Method to Maximize the Minimum User Rate for Full-Duplex RSMA Systems
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Xinji TIAN1, Long CHEN1, Xiaojing LI2
Affiliations
  • 1.Institute of Physics and Electronic Information, Henan Polytechnic University, Jiaozuo 454003, China
  • 2.Faculty of Engineering, Huanghe Science and Technology College, Zhengzhou 454000, China
doi: 10.13190/j.jbupt.2024-231
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A method is proposed to maximize the minimum user rate for full-duplex (FD) rate splitting multiple access (RSMA) systems. Firstly, the optimization problem of maximizing the minimum user rate in the system is constructed by taking the base station precoding matrix, power allocation, and common rate as optimization parameters, and the user power and rate requirements as constraint conditions. Then, the optimization objective function and the constraints are simplified by introducing slack variables respectively, and the first-order Taylor expansion is used to linearize constraints, so as to transform the non-convex optimization problem into a convex one. Finally, the optimization problem is solved based on iteration and convex (CVX) method. The simulation results show that the minimum user rate increases with the increase of the transmit power of the base station, and the minimum user rate of the proposed scheme is higher than that the existing scheme for the same scenario.

rate-splitting multiple access  /  full-duplex  /  power  /  minimum user rate  /  optimization
Xinji TIAN, Long CHEN, Xiaojing LI. A Method to Maximize the Minimum User Rate for Full-Duplex RSMA Systems[J]. Journal of Beijing University of Posts and Telecommunications, 2025 , 48 (5) : 91 -97 . DOI: 10.13190/j.jbupt.2024-231
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Year 2025 volume 48 Issue 5
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doi: 10.13190/j.jbupt.2024-231
  • Receive Date：2024-12-23
  • Online Date：2026-04-16
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  • Received：2024-12-23
Affiliations
    1.Institute of Physics and Electronic Information, Henan Polytechnic University, Jiaozuo 454003, China
    2.Faculty of Engineering, Huanghe Science and Technology College, Zhengzhou 454000, China
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