论文标题
下行链路多用MIMO系统的预述辅助辅助空间域索引调制方案
A Precoding Aided Space Domain Index Modulation Scheme for Downlink Multiuser MIMO Systems
论文作者
论文摘要
在此对应关系中，我们为多源多输入多输出（MU-MIMO）系统的下行链路提出了一个空间域索引调制（IM）方案。空间钻头选择活性接收器天线的最常见方法，在提出的方案中，空间信息被映射到发射器侧。这使IM可以更好地利用大尺寸天线设置，通常在基站部署。为了减轻用户间干扰并允许单个用户检测，在BS上采用了预编码器。此外，提出了两种替代增强的信号构建方法，以最大程度地降低传输能力或启用减少RF链的实现。不同场景的仿真结果表明，所提出的方法可以成为常规预编码MU-MIMO的有吸引力的替代方法。
In this correspondence, we propose a space domain index modulation (IM) scheme for the downlink of multiuser multiple-input multiple-output (MU-MIMO) systems. Instead of the most common approach where spatial bits select active receiver antennas, in the presented scheme the spatial information is mapped onto the transmitter side. This allows IM to better exploit large dimensional antenna settings which are typically easier to deploy at the base station. In order to mitigate inter-user interference and allow single user detection, a precoder is adopted at the BS. Furthermore two alternative enhanced signal construction methods are proposed for minimizing the transmitted power or enable an implementation with a reduced number of RF chains. Simulation results for different scenarios show that the proposed approach can be an attractive alternative to conventional precoded MU-MIMO.
