Fast beam searching concept for indoor Terahertz communications
Fast beam searching concept for indoor Terahertz communications
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DOI：
10.1109/eucap.2014.6901840
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发表时间：
2014-04
期刊：
影响因子：
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通讯作者：
Bile Peng;S. Priebe;T. Kurner
中科院分区：
文献类型：
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作者：
Bile Peng;S. Priebe;T. Kurner
太赫兹（THz）技术因其巨大的可用带宽而成为未来多千兆室内通信的一种有前景的解决方案。为了补偿太赫兹范围内的高路径损耗，可以在发射器和接收器处应用相控阵。正确的到达角 (AoA) 和出发角 (AoD) 估计是最大化相控阵优势的先决条件。然而，精度和计算量之间的冲突很难平衡。本文介绍了一种快速实用的概念，分两步估计 AoA 和 AoD。第一步，通过穷举扫描以较低频率进行初步估计。之后，在数据传输的实际频率下估计精确的角度。制定了初始化协议，确定数据传输的正确天线配置。已使用光线追踪模拟在简单场景中评估了这一概念。评估显示出令人满意的估计精度。
The Terahertz (THz) technology is a promising solution to future multiple Gigabit indoor communications because of its huge available bandwidth. To compensate the high path loss in the THz range, a phased array can be applied at both transmitter and receiver. The correct Angle of Arrival (AoA) and Angle of Departure (AoD) estimation is a prerequisite for maximizing the phased array benefits. The conflict between precision and computational effort, however, is difficult to balance. This paper introduces a fast and practical concept for the AoA and AoD estimation in 2 steps. In the first step, a preliminary estimation is carried out at a lower frequency via exhaustive scanning. After that, the precise angle is estimated at the actual frequency for the data transmission. An initialization protocol is formulated which determines the proper antenna configurations for the data transmission. This concept has been evaluated in a simple scenario using ray tracing simulations. The evaluation shows a satisfactory estimation precision.