Short-range ultra-broadband terahertz communications:: Concepts and perspectives
Short-range ultra-broadband terahertz communications:: Concepts and perspectives
复制标题
DOI：
10.1109/map.2007.4455844
复制
发表时间：
2007-12-01
影响因子：
3.5
通讯作者：
Kuerner, Thomas
中科院分区：
文献类型：
--
作者：
Piesiewicz, Radoslaw;Kleine-Ostmann, Thomas;Kuerner, Thomas
我们提出了超宽带太赫兹通信的概念，基于定向非视距（NLOS）传输。给出了这种支持多千兆数据速率的系统的潜在应用，并将其置于当前新兴的wlan / wpan的背景下。技术和传播约束是确定支持超宽带通信所需天线增益的边界条件。由此产生的高增益天线要求将需要高度定向传输。我们建议使用全向介质镜来支持定向NLOS路径。通过在动态办公环境中对太赫兹传播通道进行光线追踪模拟，研究了它们的性能，并用测量的建筑材料和镜子参数进行了校准。我们证明了定向NLOS路径方案将使太赫兹通信系统对阴影具有鲁棒性。此外，我们表明，在典型的室内场景中，仅覆盖部分墙壁的介电镜将显著增强信号覆盖。
We propose the concept of ultra-broadband terahertz communication, based on directed non-line-of-sight (NLOS) transmissions. Potential applications of such a system supporting multi-gigabit data rates are given, and put into the context of currently emerging WLANs/WPANs. The technology and propagation constraints serve as boundary conditions for the determination of the required antenna gain to support ultra-broadband communication. Resulting high-gain antenna requirements will necessitate highly directed transmissions. We propose the use of omni-directional dielectric mirrors to support directed NLOS paths. Their performance is investigated with ray-tracing simulations of a terahertz propagation channel in a dynamic office environment, which is calibrated with measured building-material and mirror parameters. We demonstrate that a directed NLOS path scheme will make a terahertz communication system robust to shadowing. Furthermore, we show that dielectric mirrors covering only parts of the walls will significantly enhance the signal coverage in a typical indoor scenario.