论文标题
在逼真的功率放大器消耗限制下，大量MIMO的线性预编码器设计
Linear Precoder Design in Massive MIMO under Realistic Power Amplifier Consumption Constraint
论文作者
论文摘要
无线网络的能源消耗越来越关注。在越来越多地作为5G推出的一部分部署的大型MIMO系统中，基础站的功率放大器在电源需求方面具有很大的影响。当前的大多数大型MIMO预编码器旨在最大程度地减少发射功率。但是，功率放大器的效率取决于其饱和度方案的运行状态，并且被证明消耗的功率与发射功率无关。因此，提出了基于功耗的最大比率传输，零强度和正则化零强度预码器的等效物。我们展示了解决方案的结构如何从根本上改变。尽管所有天线都应活跃以最大程度地减少发射功率，但相反，如果目标是功率放大器所消耗的功率，则应激活较小数量的天线。
The energy consumption of wireless networks is a growing concern. In massive MIMO systems, which are being increasingly deployed as part of the 5G roll-out, the power amplifiers in the base stations have a large impact in terms of power demands. Most of the current massive MIMO precoders are designed to minimize the transmit power. However, the efficiency of the power amplifiers depend on their operating regime with respect to their saturation regime, and the consumed power proves to be non-linearly related to the transmit power. Power consumption-based equivalents of maximum ratio transmission, zero-forcing, and regularized zero-forcing precoders are therefore proposed. We show how the structure of the solutions radically changes. While all antennas should be active in order to minimize the transmit power, we find on the contrary that a smaller number of antennas should be activated if the objective is the power consumed by the power amplifiers.
