论文标题
在线分布式分布式编码的虚拟化MIMO网络的预编码延迟CSI
Online Distributed Coordinated Precoding for Virtualized MIMO Networks with Delayed CSI
论文作者
论文摘要
我们考虑在线无线网络虚拟化（WNV）中，具有延迟的通道状态信息（CSI）反馈的多细胞多输入多输入（MIMO）系统。多个服务提供商（SPS）同时共享基础架构提供商（INP）的基站资源。我们旨在最大程度地减少INP实际上与SPS虚拟化需求的累积的预编码偏差，但要遵守长期和短期每单元素传输功率约束的情况下，既有SPS Inter-SP和Inter-Chienter Inter-Chore dections of SPS的虚拟化需求。我们开发了一个在线协调的预编码解决方案，并表明它提供了可证明的性能界限。我们的预编码解决方案仅基于延迟的局部CSI，完全分布在每个单元格。此外，它具有低计算复杂性的封闭式表达。最后，仿真结果证明了我们的预编码解决方案比当前最佳替代方案的大量性能获得。
We consider online wireless network virtualization (WNV) in a multi-cell multiple-input multiple output (MIMO) system with delayed feedback of channel state information (CSI). Multiple service providers (SPs) simultaneously share the base station resources of an infrastructure provider (InP). We aim at minimizing the accumulated precoding deviation of the InP's actual precoder from the SPs' virtualization demands via managing both inter-SP and inter-cell interference, subject to both long-term and short-term per-cell transmit power constraints. We develop an online coordinated precoding solution and show that it provides provable performance bounds. Our precoding solution is fully distributed at each cell, based only on delayed local CSI. Furthermore, it has a closed-form expression with low computational complexity. Finally, simulation results demonstrate the substantial performance gain of our precoding solution over the current best alternative.
