文章摘要
任静.基于毫米波大规模MIMO的用户调度问题[J].空军工程大学学报:自然科学版,2020,21(6):60-65
基于毫米波大规模MIMO的用户调度问题
Research on User Scheduling Problems Based on Millimeter Wave Massive MIMO
  
DOI:
中文关键词: 大规模MIMO  毫米波  混合预编码  调度算法
英文关键词: massive MIMO  millimeter-wave  hybrid precoding  scheduling algorithm
基金项目:
作者单位
任静 西安邮电大学通信与信息工程学院西安710121 
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中文摘要:
      毫米波传播具有很高的路径损耗以及较强的方向性,对障碍物造成的阻挡以及由运动引起的多普勒频移等非常敏感,因此如何提供稳定的链路质量成为毫米波通信系统中必须解决的问题,又因为电磁波有不同的传播特性,基于天线个数的不断增加和对成本的考量,传统的多用户预编码技术难以运用在毫米波通信系统中,因此如何将毫米波通信与Massive MIMO进行结合成为未来无线通信发展的重要研究方向。针对毫米波系统的以上几点特性,提出了一种基于FDMA的毫米波系统中用户频域调度与多个用户进行混合预编码的联合算法,通过运用该算法可以提高毫米波通信系统的性能。仿真结果表明:该算法的性能近似于纯数字预编码的性能,与其它同类算法相比,计算复杂度增加的并不明显,可以大大改善毫米波Massive MU-MIMO系统的性能。
英文摘要:
      Millimeter wave is high in path loss, strong in directivity, and is very sensitive to the obstacles caused by obstacles and the Doppler frequency shift caused by motion. Therefore, how to provide a stable link quality becomes a problem to be solved in millimeter wave communication systems. Aimed at the problems that electromagnetic waves have different propagation characteristics in consideration of the continuous increase in the number of antennas and cost, traditional multi user precoding technology is difficult to use in millimeter wave communication systems, and the combination of millimeter wave communications with the Massive MIMO has become an important research direction for future wireless communication development, a joint algorithm of user frequency domain scheduling in the millimeter wave system is proposed based on FDMA and mixed precoding of multiple users, improving the performance in the millimeter wave communication system. The simulation results show that this algorithm is similar to the pure digital precoding in performance. Compared with other similar algorithms, the increase in computational complexity is not obvious, and the algorithm can greatly improve the performance in the millimeter wave Massive MU MIMO system.
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