To better serve future vehicular network, we judiciously design an anti-Doppler index modulation termed as pre-compensation assisted generalized beam index modulation (PC-GBIM) for wideband mmWave massive multiple-input multiple-output (mMIMO) systems. The proposed PC-GBIM design comprises two key elements. First, we generalize the existing beam index modulation (BIM) from the hybrid narrowband to hybrid wideband systems and from activating single beam to activating multiple beams. Secondly, an effective first-order Doppler pre-compensator is introduced to assist index modulation, such that the originally complicated block-based maximum likelihood (ML) detection degenerates into the simple subcarrier-based ML detection. Both the theoretical analyses and numerical simulations have been made and demonstrate the superiority over existing alternatives in doubly-selective channels.

中文翻译：

---

双选择信道上mmWave大规模MIMO的预补偿辅助广义波束索引调制（PC-GBIM）

为了更好地服务于未来的车载网络，我们明智地为宽带mmWave大规模多输入多输出（mMIMO）系统设计了一种称为多补偿预调制辅助的广义波束索引调制（PC-GBIM）的反多普勒索引调制。拟议的PC-GBIM设计包含两个关键要素。首先，我们概括了从混合窄带到混合宽带系统以及从激活单束到激活多束的现有束索引调制（BIM）。其次，引入了有效的一阶多普勒预补偿器来辅助索引调制，从而使原本复杂的基于块的最大似然（ML）检测退化为简单的基于子载波的ML检测。