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arXiv 2109.07596cs.ITeess.SPmath.IT
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全双工毫米波大规模MIMO系统中的方向辅助波束管理

Direction-Assisted Beam Management in Full Duplex Millimeter Wave Massive MIMO Systems

Md Atiqul Islam, George C. Alexandropoulos, Besma Smida

摘要:

全双工(FD)技术的最新应用集中于实现同时的控制通信和数据传输以减少控制信息交换开销,这影响端到端延迟和频谱效率。在本文中,我们提出了一个同时的毫米波(mmWave)大规模多输入多输出(MIMO)系统的方向估计和数据传输方案,使最近的FD MIMO技术与降低硬件复杂度的自干扰(SI)消除。我们将所提出的框架应用于毫米波模拟波束管理问题,考虑配备有实现下行链路模拟波束成形的大型发射天线阵列和用于上行链路到达方向(DoA)估计的少量数字控制接收天线元件的基站。提出了一种用于设计DOA辅助模拟波束形成器和模拟以及数字SI消除的联合优化框架,其目标是最大化可实现的下行链路速率。我们的仿真结果表明,该方案优于其传统的半双工对应,产生减少的DOA估计误差和优越的下行链路数据率。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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