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.
翻译:在这项工作中,我们调查RSMA在多输入单一输出(MISO)广播频道中与多输入单一输出(BC)波形进行联合通信和干扰的新的应用。我们的目的是同时与信息用户(IU)和Audversarial用户(AU)进行通信联系,以便在所有用户在各自网络中通过MC波形进行宽带通信时中断通信。我们考虑在IU发射机和统计CSIT上为AU提供不完善的CSI的实际设置。最佳信息和干扰预设器旨在尽量扩大AUS实验子载体受干扰力限制情况下的总和率。根据所考虑的系统模型,这种干扰法被认为是对MC波形最具破坏性的方法之一。我们通过数字结果比较RSMA和空间司多访问(SDMA)计划的总和率绩效,以表明RSMA取得了与SDMA相比的重大总和率收益。