论文标题
如何在无线网络中部署智能反射表面：BS侧，用户端或双方？
How to Deploy Intelligent Reflecting Surfaces in Wireless Network: BS-side, User-side, or Both Sides?
论文作者
论文摘要
无线通信系统的性能从根本上受到随机和不可控制的无线通道的约束。通过利用以数字控制的跨表面的发展，智能反射表面（IRS）已成为一种有希望的解决方案，可以通过智能地重新配置无线电传播环境来增强无线网络性能。尽管对IRS辅助通信进行了大量研究，但本文探讨了如何在无线网络中部署IRS以实现其最佳性能的重要问题。我们首先比较了在基站或分布式用户各种沟通性能指标方面部署IRS的两种常规策略，然后通过合并其互补优势来提出一种新的混合IRS部署策略。此外，讨论了优化IRS部署及其有希望的解决方案的主要挑战。还提出了一个案例研究，以比较不同IRS部署策略的性能，并为实践设计提供有用的见解。
The performance of wireless communication systems is fundamentally constrained by the random and uncontrollable wireless channel. By leveraging the recent advance in digitally-controlled metasurface, intelligent reflecting surface (IRS) has emerged as a promising solution to enhance the wireless network performance by smartly reconfiguring the radio propagation environment. Despite the substantial research on IRS-aided communications, this article addresses the important issue of how to deploy IRSs in a wireless network to achieve its optimum performance. We first compare the two conventional strategies of deploying IRS at the side of base station or distributed users in terms of various communication performance metrics, and then propose a new hybrid IRS deployment strategy by combining their complementary advantages. Moreover, the main challenges in optimizing IRS deployment as well as their promising solutions are discussed. A case study is also presented to compare the performance of different IRS deployment strategies and draw useful insights for practical design.
