Recent applications of the Full Duplex (FD) technology focus on enabling simultaneous control communication and data transmission to reduce the control information exchange overhead, which impacts end-to-end latency and spectral efficiency. In this paper, we present a simultaneous direction estimation and data transmission scheme for millimeter Wave (mmWave) massive Multiple-Input Multiple-Output (MIMO) systems, enabled by a recent FD MIMO technology with reduced hardware complexity Self-Interference (SI) cancellation. We apply the proposed framework in the mmWave analog beam management problem, considering a base station equipped with a large transmit antenna array realizing downlink analog beamforming and few digitally controlled receive antenna elements used for uplink Direction-of-Arrival (DoA) estimation. A joint optimization framework for designing the DoA-assisted analog beamformer and the analog as well as digital SI cancellation is presented with the objective to maximize the achievable downlink rate. Our simulation results showcase that the proposed scheme outperforms its conventional half-duplex counterpart, yielding reduced DoA estimation error and superior downlink data rate.
翻译:“全多元”(FD)技术的近期应用侧重于使同步控制通信和数据传输能够同时进行,以减少控制信息交流间接费用,从而影响端到端的悬浮度和光谱效率;在本文件中,我们介绍了毫米波(mmWave)大规模多投入多输出(MIIMO)系统的同步方向估计和数据传输计划,这是由最近FD MIMO技术促成的,其硬件复杂度降低,自我干涉(SI)取消。我们应用了mmWave模拟光束管理问题的拟议框架,我们考虑到一个基地站,配备了大型传输天线阵列,实现了下链线模拟成型,很少数字控制接收用于上链路“着陆方向(DoA)”估计的天线元件。提出了设计DoA辅助模拟光束和模拟光束以及数字光学取消的联合优化框架,目的是最大限度地实现可实现的下链速率。我们的模拟结果显示,拟议的计划超出了常规半双相对等,导致 DoA估计错误减少,下链数据率提高。