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This paper investigates the performance of a two-way relay system based on an unmanned aerial vehicle (UAV) employing rate-splitting multiple access. The problem of maximizing the average minimum achievable rate (AMAR) of users is formulated by jointly optimizing the common rate and the transmit power of both the users and the UAV. A block coordinate descent method is adopted to decompose the AMAR maximization problem into several subproblems, each of which can be efficiently solved through an iterative approach. Numerical results are presented to demonstrate the effectiveness of the optimal method, which achieves a superior average achievable rate compared to the orthogonal multiple access system and other benchmark schemes.

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Performance Maximization in UAV-Based Two-Way Relay RSMA Systems

  • 会议论文

  • 发表日期：

    2026年

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  • Thanh Trung Nguyen,
  • Nguyen Hoang Vu,
  • Tran Manh Hoang,
  • T. T. Huyen Le,
  • Thu Phuong Nguyen,
  • Xuan Nam Tran

摘要

This paper investigates the performance of a two-way relay system based on an unmanned aerial vehicle (UAV) employing rate-splitting multiple access. The problem of maximizing the average minimum achievable rate (AMAR) of users is formulated by jointly optimizing the common rate and the transmit power of both the users and the UAV. A block coordinate descent method is adopted to decompose the AMAR maximization problem into several subproblems, each of which can be efficiently solved through an iterative approach. Numerical results are presented to demonstrate the effectiveness of the optimal method, which achieves a superior average achievable rate compared to the orthogonal multiple access system and other benchmark schemes.