论文标题
使用定向扩张，截断和增强的新型RIS辅助EMF感知的波束形成
A Novel RIS-Aided EMF-Aware Beamforming Using Directional Spreading, Truncation and Boosting
论文作者
论文摘要
本文介绍了大量多输入多输出最大比率传输边界的缺点。在某些传播条件下，当基站长时间使用相同的目标用户设备时，它会降低发射功率（并降低接收的功率），以避免在天线的附近创建高曝光区域，并集中在几个方向上（对应于天线和接收者之间的最佳繁殖路径）。在本文中，我们提出了一种新型的电磁场意识到的光束形成方案，该方案（i）通过添加人工传播路径，通过可重新配置的智能表面来扩展角域中的光束辐射模式，（ii）在强方向上截断了该模式，并且（iii）在弱方向上增强了图案。与现有解决方案相比，它最大化了接收的功率。但是，它也消耗了更多的动力。最后，在暴露限制下，仅截断是接收到的功率和能源效率之间的最佳权衡。
This paper addresses a drawback of massive multiple-input multiple-output Maximum Ratio Transmission beamforming. In some propagation conditions, when the base station serves the same target user equipment for a long period, it reduces the transmit power (and degrades the received power) to avoid creating high exposure regions located in the vicinity of the antenna and concentrated in few directions (corresponding to the best propagation paths between the antenna and the receiver). In this paper, we propose a novel electromagnetic field aware beamforming scheme, which (i) spreads the beamforming radiation pattern in the angular domain by adding artificial propagation paths thanks to reconfigurable intelligent surfaces, (ii) truncates the pattern in strong directions, and (iii) boosts it in weak directions. Compared to existing solutions, it maximizes the received power. However, it also consumes more power. Finally, truncation alone is the best trade-off between received power and energy efficiency, under exposure constrain.
