论文标题
可重新配置的ULA用于视线MIMO传输
Reconfigurable ULAs for Line-of-Sight MIMO Transmission
论文作者
论文摘要
本文在所有可能的天线布置上建立了上界的多线多胞毒通道的能力，并表明均匀的线性阵列（ULA）具有发射机或接收器的SNR依赖性旋转，可以紧密接近这种能力 - 实际上，在低和高的SNR上实现了它，并且在天线的数量上差异。然后，作为机械旋转ULA的替代方案，我们提议在发射机或接收器的多个具有径向处置的ULA中进行电子选择，并且我们将短缺与此类ULAS数量的关系结合。只有三个ULA，可以正确角度，可以实现96％的容量。最后，我们进一步介绍了简化的复杂性预编码器和线性接收器，这些接收器利用这些可配置的ULA架构产生的通道的结构。
This paper establishes an upper bound on the capacity of line-of-sight multiantenna channels over all possible antenna arrangements and shows that uniform linear arrays (ULAs) with an SNR-dependent rotation of transmitter or receiver can closely approach such capacity---and in fact achieve it at low and high SNR, and asymptotically in the numbers of antennas. Then, as an alternative to mechanically rotating ULAs, we propose to electronically select among multiple ULAs having a radial disposition at either transmitter or receiver, and we bound the shortfall from capacity as a function of the number of such ULAs. With only three ULAs, properly angled, 96% of the capacity can be achieved. Finally, we further introduce reduced-complexity precoders and linear receivers that capitalize on the structure of the channels spawned by these configurable ULA architectures.
