Rate Splitting Multiple Access for Multi-Antenna Multi-Carrier Joint Communications and Jamming
Rate Splitting Multiple Access for Multi-Antenna Multi-Carrier Joint Communications and Jamming
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DOI：
10.1109/sspd51364.2021.9541482
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发表时间：
2021-01
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影响因子：
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通讯作者：
Onur Dizdar;B. Clerckx
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文献类型：
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作者：
Onur Dizdar;B. Clerckx
速率分割多址 (RSMA) 是一种用于下行链路多天线无线网络的稳健多址方案。在这项工作中，我们研究了 RSMA 的一种新颖应用，用于在多输入单输出 (MISO) 广播通道 (BC) 中使用多载波 (MC) 波形进行联合通信和干扰。我们的目标是在所有用户通过各自网络中的 MC 波形进行宽带通信的环境中，同时与信息用户 (IU) 进行通信并干扰对抗性用户 (AU)，以扰乱他们的通信。我们考虑 IU 的发射机处不完美 CSI (CSIT) 和 AU 的统计 CSIT 的实际设置。最优信息和干扰预编码器被设计成在AU的导频子载波上的干扰功率限制下最大化总速率，这种干扰方法被认为是在所考虑的系统模型下对MC波形最具破坏性的方法之一。我们通过数值结果比较了 RSMA 和空分多址 (SDMA) 方案的总速率性能，以证明与 SDMA 相比，RSMA 实现了显着的总速率增益。
Rate-Splitting Multiple Access (RSMA) is a robust multiple access scheme for downlink multi-antenna wireless networks. In this work, we investigate a novel application of RSMA for joint communications and jamming with a Multi-Carrier (MC) waveform in Multiple Input Single Output (MISO) Broadcast Channel (BC). Our aim is to simultaneously communicate with Information Users (IU) and jam Adversarial Users (AU) to disrupt their communications in a setting where all users perform broadband communications by MC waveforms in their respective networks. We consider the practical setting of imperfect CSI at transmitter (CSIT) for the IUs and statistical CSIT for AUs. The optimal information and jamming precoders are designed to maximize the sum-rate under jamming power constraints on the pilot subcarriers of AUs, a jamming method considered to be among the most destructive methods for MC waveforms under the considered system model. We compare the sum-rate performance of RSMA and Space Division Multiple Access (SDMA) schemes by numerical results to demonstrate that RSMA achieves a significant sum-rate gain compared to SDMA.