Abstract

This research aims to develop an ultra-wideband millimeter-wave system with Simultaneous Wireless Information and Power Transfer (SWIPT), and Wireless Power Transmission (WPT) for the relays. As a large attenuation of a millimeter-wave path requires beamforming technology and relay for transmission, high- and low-resolution phase adjustments are used for optimizing beamforming. And a multi-objective function with the preset highest Bit Error Rate (BER) for SWIPT is presented. We discovered that the optimization of the beamforming by applying the adaptive differential algorithm has increased the harvesting power. To do so, we optimize the radiation pattern to meet the BER constraint for SWIPT and increase the harvested power ratio for the system simultaneously. In other words, our algorithms focus on increasing the harvesting power as soon as the information criteria is achieved. With WPT and SWIPT, the ratio of the total energy harvesting for the high-resolution array antennas is two times larger than that for the low-resolution ones. Numerical results also show that the harvesting power for the relay pointing to multiple targeted antennas simultaneously is about two times larger than that of pointing to each antenna by the time division techniques.

中文翻译：

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用于毫米波同时无线信息和电力传输系统的波束成形中继

摘要

本研究旨在开发一种具有同步无线信息和电力传输 (SWIPT) 以及用于继电器的无线电力传输 (WPT) 的超宽带毫米波系统。由于毫米波路径的大衰减需要波束成形技术和中继传输，因此使用高分辨率和低分辨率相位调整来优化波束成形。并提出了一种针对SWIPT的预设最高误码率(BER)的多目标函数。我们发现通过应用自适应差分算法对波束形成进行优化提高了采集能力。为此，我们优化了辐射方向图以满足 SWIPT 的 BER 约束并同时增加系统的收获功率比。换句话说，我们的算法专注于在达到信息标准后立即提高采集能力。使用 WPT 和 SWIPT，高分辨率阵列天线的总能量收集比是低分辨率天线的两倍。数值结果还表明，中继同时指向多个目标天线的收获功率大约是通过时分技术指向每个天线的收获功率的两倍。