论文标题
下行链路巨大的mu-mimo，持续进行的零强迫预编码
Downlink Massive MU-MIMO with Successively-Regularized Zero Forcing Precoding
论文作者
论文摘要
在这封信中，我们考虑了下行链路大量多用户（MU）多输入多输出（MIMO）系统的线性预码。我们提出了新型的持续规范化的零强迫（SRZF）的预编码，该预码器利用了用户的MIMO通道的连续空空间，以及正则化，以控制用户间干扰（IUI），并增强性能和鲁棒性，以提高基本站点（CSI）（CSI）（CSI）的性能和鲁棒性。我们研究拟议的SRZF预编码的IUI特征，以使BS完美和不完美的CSI。此外，通过计算机模拟，我们将SRZF预编码的总和速率与几种基线方案的总和（包括常规和正则化零强迫（ZF）预编码）进行了比较。我们的仿真结果表明，对于具有使用间通道间相关性的大型MIMO系统，所提出的SRZF预编码明显优于BS的完美和不完美CSI所考虑的基线方案。
In this letter, we consider linear precoding for downlink massive multi-user (MU) multiple-input multiple-output (MIMO) systems. We propose the novel successively-regularized zero forcing (SRZF) precoding, which exploits successive null spaces of the MIMO channels of the users, along with regularization, to control the inter-user interference (IUI) and to enhance performance and robustness to imperfect channel state information (CSI) at the base station (BS). We study the IUI characteristics of the proposed SRZF precoding for perfect and imperfect CSI at the BS. Furthermore, via computer simulations, we compare the sum rate of SRZF precoding with those of several baseline schemes including conventional and regularized zero forcing (ZF) precoding. Our simulation results reveal that, for massive MIMO systems with inter-user channel correlations, the proposed SRZF precoding significantly outperforms the considered baseline schemes for both perfect and imperfect CSI at the BS.
