论文标题
同时进行下行链路数据传输和上行链路通道估计，复杂性降低了完整的双工MIMO收音机
Simultaneous Downlink Data Transmission and Uplink Channel Estimation with Reduced Complexity Full Duplex MIMO Radios
论文作者
论文摘要
在本文中，我们研究完整的双链体（FD）多输入多输出（MIMO）无线电，以同时进行数据通信和控制信息交换。利用最近提出的FD MIMO架构结合数字传输和接收光束的复杂性多-TAP模拟自我干扰（SI）取消，我们提出了一种新型的传输方案，利用了通过训练数据传输来利用关节下行链路上链接信息成形信息数据通信的关节下行链接信息图数据通信和上升链路通道的估计。我们采用一个通用模型来进行试验辅助通道估计，并为所有相关的FD MIMO设计参数提供一个统一的优化框架。我们代表性的蒙特卡洛模拟结果，用于示例算法解决方案以及模拟和数字SI取消的结果表明，提出的基于FD的联合通信和控制方案提供了1.4倍的半链路速率。与传统的FD MIMO体系结构相比，通过完全连接的模拟取消，可以改善这种性能，而硬件复杂性的复杂性降低了50％。
In this paper, we study Full Duplex (FD) Multiple-Input Multiple-Output (MIMO) radios for simultaneous data communication and control information exchange. Capitalizing on a recently proposed FD MIMO architecture combining digital transmit and receive beamforming with reduced complexity multi-tap analog Self-Interference (SI) cancellation, we propose a novel transmission scheme exploiting channel reciprocity for joint downlink beamformed information data communication and uplink channel estimation through training data transmission. We adopt a general model for pilot-assisted channel estimation and present a unified optimization framework for all involved FD MIMO design parameters. Our representative Monte Carlo simulation results for an example algorithmic solution for the beamformers as well as for the analog and digital SI cancellation demonstrate that the proposed FD-based joint communication and control scheme provides 1.4x the downlink rate of its half duplex counterpart. This performance improvement is achieved with 50% reduction in the hardware complexity for the analog canceller than conventional FD MIMO architectures with fully connected analog cancellation.
