Electro-magnetic field exposure reduction/avoidance for the next generations of wireless communication systems

在下一代的通讯网络中，为支援以指数增长的通讯需求，必须部署大量额外的接入点（即基台），以补充现有的接入点。如果不采取具体行动，这将提高公众接触到的电磁辐射水平，并增加他们对电磁辐射的关注。这项研究工作的总体目标是研究创新技术，通过将接入点密度的增加（这将是未来网络的基石）转化为优势，减少通信系统的电磁暴露。在网络中有更多的接入点可以提供更多的自由度，例如；减低流动装置（即主要辐射源）的发射功率，方法是同时连接/传送至多个接收器，或只连接/传送至不在使用者头部/身体方向的接入点。

In the next generation of communication networks, to support the exponential rise in traffic demand, a large number of additional access points (i.e. base stations) will have to be deployed to supplement the existing ones. If no specific actions are taken, this will raise the level of electromagnetic (EM) radiation that the general public is exposed to, and increase their concerns about it. The overall objective of this research work is to investigate innovative techniques for reducing the EM exposure from communication systems by turning the increased density of access points, which will be a cornerstone of future networks, into an advantage. Having more access points in the networks give more degrees of freedom to, for example; reduce the transmit power of mobile device (i.e. the main source of exposure) by connecting/transmitting to several receivers simultaneously, or to connect/transmit only to access points that are not in the direction of the user head/body.