3D Beamforming Techniques for Indoor UWB Wireless Communications

2019 IEEE International Conference of Intelligent Applied Systems on Engineering (ICIASE) Pub Date : 2019-04-01 DOI:10.1109/ICIASE45644.2019.9074048

W. Chien, Jia-Xin Xu, C. Chiu, Yu-Ting Cheng, Yu-Lin Lee

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Abstract

The main research in this paper is an ultra-wideband (UWB) three-dimensional (3D) circular antenna array and we highlight the importance of elevation angles and their influence of the system performance. The 3D channel is calculated by 3D shooting and bouncing ray/image techniques which specify multipath elevation angles and azimuth for horizontal plane angles. The capacities of the two-dimensional (2D) and three-dimensional transmitting antenna arrays have been presented. Beam-synthesizing techniques are used at the transmitter to focus the transmitter energy for reducing the multi-path effect and increasing channel capacity. Asynchronous Particle Swarm Optimization (APSO) methods are used to adjust the length of the feed line on each array element for maximizing the capacity. The higher directive gain obtained from the 3D antenna arrays results in high channel capacity compared to 2D azimuth-only antenna arrays. It is found the capacity for the 3D array increases more than 10% compared to that for the 2D array. Our research not only provides qualitative results, but also provides quantitative results.

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室内超宽带无线通信的三维波束形成技术

本文主要研究了一种超宽带(UWB)三维(3D)圆形天线阵列，强调了仰角的重要性及其对系统性能的影响。3D通道是通过3D拍摄和反射射线/图像技术计算的，这些技术指定了多路径仰角和水平面角的方位角。给出了二维(2D)和三维发射天线阵列的容量。发射机采用波束合成技术来集中发射机能量，以减少多径效应，增加信道容量。采用异步粒子群优化(APSO)方法对各阵列单元馈线长度进行调整，使容量最大化。与2D方位天线阵列相比，三维天线阵列具有更高的方向性增益，从而获得更高的信道容量。与二维阵列相比，三维阵列的容量增加了10%以上。我们的研究不仅提供定性结果，而且提供定量结果。

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2019 IEEE International Conference of Intelligent Applied Systems on Engineering (ICIASE)

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