论文标题
6G无细胞的大型MIMO
Smart Hybrid Beamforming and Pilot Assignment for 6G Cell-Free Massive MIMO
论文作者
论文摘要
本文研究了无细胞的大型MIMO网络，其中每个接入点（AP）配备了混合收发器，与完全数字收发器相比，复杂性和成本降低了。用于上行链路和下行链路的光谱效率的渐近近似。利用这些表达式，提出了一个最大值问题，以优化APS和（ii）试验分配的（i）模拟波束形式。模拟表明，这些变量的优化大大提高了网络性能。
This paper investigates Cell-Free massive MIMO networks, where each access point (AP) is equipped with a hybrid transceiver, reducing the complexity and cost compared to a fully digital transceiver. Asymptotic approximations for the spectral efficiency are derived for uplink and downlink. Capitalizing on these expressions, a max-min problem is formulated to optimize the (i) analog beamformer at the APs and (ii) pilot assignment. Simulations show that the optimization of these variables substantially increases the network performance.
