Full Duplex Cooperative Rate Splitting Multiple Access for a MISO Broadcast Channel With Two Users
Full Duplex Cooperative Rate Splitting Multiple Access for a MISO Broadcast Channel With Two Users
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DOI：
10.1109/lcomm.2022.3173894
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发表时间：
2022-08
期刊：
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通讯作者：
Shreya Khisa;M. Almekhlafi;M. Elhattab;C. Assi
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作者：
Shreya Khisa;M. Almekhlafi;M. Elhattab;C. Assi
在这封信中，我们调查的性能全双工（FD）的合作速率分割多址接入（C-RSMA）计划在下行链路多输入单输出（MISO）系统由一个基站（BS），同时服务于两个用户。以最大化最小可达速率为目标，根据基站和中继设备的功率预算，联合优化基站预编码向量、公共流分割和设备到设备发射功率。由于整个问题是非凸的，我们提出了一个低复杂度的算法的基础上逐次凸逼近（SCA）技术。仿真结果表明，FD-C-RSMA比FD-C-NOMA、半双工（HD）C-RSMA、RSMA和NOMA等基本方案具有更高的最小可达速率。
In this letter, we investigate the performance of a full-duplex (FD) cooperative rate splitting multiple access (C-RSMA) scheme in a downlink multiple-input single-output (MISO) system consisting of one base station (BS) that serves two users simultaneously. With the objective of maximizing the minimum achievable rate, we jointly optimize the BS precoding vectors, the common-stream split and the device-to-device transmit power subject to the power budget of both the BS and the relay device. As the entire problem is non-convex, we propose a low complexity algorithm based on the successive convex approximation (SCA) technique. Simulation results demonstrated that the FD C-RSMA can achieve a higher minimum achievable rate than some baseline schemes, including the FD cooperative non-orthogonal multiple access (FD C-NOMA), the half-duplex (HD) C-RSMA, RSMA and NOMA.