In this paper, we propose one-bit feedback-based distributed beamforming (DBF) techniques for simultaneous wireless information and power transfer in interference channels where the information transfer and power transfer networks coexist in the same frequency spectrum band. In a power transfer network, multiple distributed energy transmission nodes transmit their energy signals to a single energy receiving node capable of harvesting wireless radio frequency energy. Here, by considering the Internet-of-Things sensor network, the energy harvesting/information decoding receivers (ERx/IRx) can report their status (which may include the received signal strength, interference, and channel state information) through one-bit feedback channels. To maximize the amount of energy transferred to the ERx and simultaneously minimize the interference to the IRx, we developed a DBF technique based on one-bit feedback from the ERx/IRx without sharing the information among distributed transmit nodes. Finally, the proposed DBF algorithm in the interference channel is verified through the simulations and also implemented in real time by using GNU radio and universal software radio peripheral.

中文翻译：

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实时实现分布式波束成形，用于干扰信道中同时进行无线信息和功率传输

在本文中，我们提出了基于一位反馈的分布式波束成形 (DBF) 技术，用于在干扰信道中同时进行无线信息和功率传输，其中信息传输和功率传输网络共存于同一频段。在电力传输网络中，多个分布式能量传输节点将其能量信号传输到能够收集无线射频能量的单个能量接收节点。在这里，通过考虑物联网传感器网络，能量收集/信息解码接收器（ERx/IRx）可以通过一位反馈报告它们的状态（可能包括接收到的信号强度、干扰和信道状态信息）渠道。为了最大限度地转移到 ERx 的能量，同时最大限度地减少对 IRx 的干扰，我们开发了一种基于来自 ERx/IRx 的一位反馈的 DBF 技术，而无需在分布式传输节点之间共享信息。最后，通过仿真验证了所提出的干扰信道中的 DBF 算法，并使用 GNU 无线电和通用软件无线电外设实时实现。