论文标题
XL-MIMO节能天线在非平稳通道下的选择
XL-MIMO Energy-Efficient Antenna Selection under Non-Stationary Channels
论文作者
论文摘要
大量的多输入 - 元素输出（M-MIMO）是5G网络的关键技术。在该研究领域中，正在出现新的部署类型，例如极大的政权（XL-MIMO），该机构在基本站的天线阵列（BS）具有极大的尺寸。结果，当用户仅看到天线阵列的一部分时，空间非平稳属性出现，这称为可见性区域（VR）。在这种挑战性的传输触发场景中，提出了用于处理上行链路中给定用户接收的信号的适当天线元素（UL）（UL）的算法，并提出了在下行链路（DL）期间传输该用户信号的算法。不使用BS的所有可用天线元件的优点是计算负担和电路功率减少，从而大大提高了能源效率（EE）。数值结果表明，可以增加EE而不会大大损害光谱效率（SE）。在少数活动用户的情况下，XL-MIMO系统的性能表明，使用不到阵列的天线元素的20％的EE最大化，而不会严重损害SE。
Massive multiple-input-multiple-output (M-MIMO) is a key technology for 5G networks. Within this research area, new types of deployment are arising, such as the extremely-large regime (XL- MIMO), where the antenna array at the base station (BS) has extreme dimensions. As a consequence, spatial non-stationary properties appear as the users see only a portion of the antenna array, which is called visibility region (VR). In this challenging transmission-reception scenario, an algorithm to select the appropriate antenna-elements for processing the received signal of a given user in the uplink (UL), as well as to transmit the signal of this user during downlink (DL) is proposed. The advantage of not using all the available antenna-elements at the BS is the computational burden and circuit power consumption reduction, improving the energy efficiency (EE) substantially. Numerical results demonstrate that one can increase the EE without compromising considerably the spectral efficiency (SE). Under few active users scenario, the performance of the XL-MIMO system shows that the EE is maximized using less than 20% of the antenna-elements of the array, without compromising the SE severely.
