论文标题
智能重新配置的表面与解码和前向：电磁干扰的影响是什么？
Intelligent Reconfigurable Surfaces vs. Decode-and-Forward: What is the Impact of Electromagnetic Interference?
论文作者
论文摘要
本文考虑使用智能可重构表面（IRS）来帮助无线通信系统。主要目标是将这种新兴技术与常规解码（DF）中继进行比较。与先前的比较不同，我们假设电磁干扰（EMI）由来自外部来源的传入波组成，存在于IRS或DF继电器的位置。从最小化总发射功率方面，该分析表明，即使对EMI进行了优化，EMI也对DF继电器辅助通信产生了强烈的影响。事实证明，IRS辅助通信对EMI更具弹性。要击败IRS，我们表明DF继电器必须使用多个天线，并通过横梁形成积极抑制EMI。
This paper considers the use of an intelligent reconfigurable surface (IRS) to aid wireless communication systems. The main goal is to compare this emerging technology with conventional decode-and-forward (DF) relaying. Unlike prior comparisons, we assume that electromagnetic interference (EMI), consisting of incoming waves from external sources, is present at the location where the IRS or DF relay are placed. The analysis, in terms of minimizing the total transmit power, shows that EMI has a strong impact on DF relay-assisted communications, even when the relaying protocol is optimized against EMI. It turns out that IRS-aided communications is more resilient to EMI. To beat an IRS, we show that the DF relay must use multiple antennas and actively suppress the EMI by beamforming.
