张馨予, 孔祥鲲, 刘子庆, 高世奇, 王霄鹏, 戚楠. 加载可重构智能超表面的无人机通信系统设计与验证[J]. 电波科学学报.
      引用本文: 张馨予, 孔祥鲲, 刘子庆, 高世奇, 王霄鹏, 戚楠. 加载可重构智能超表面的无人机通信系统设计与验证[J]. 电波科学学报.
      Design and Verification of a wireless communication system based on UAV with airborne reconfigurable intelligent surface[J]. CHINESE JOURNAL OF RADIO SCIENCE.
      Citation: Design and Verification of a wireless communication system based on UAV with airborne reconfigurable intelligent surface[J]. CHINESE JOURNAL OF RADIO SCIENCE.

      加载可重构智能超表面的无人机通信系统设计与验证

      Design and Verification of a wireless communication system based on UAV with airborne reconfigurable intelligent surface

      • 摘要: 可重构智能超表面(RIS)技术由于其卓越的电磁调控能力,被认为是实现下一代无线通信的可行方案. 然而,大多数现有的研究依赖于计算机对现场可编程门阵列(FPGA)进行有线数据传输来控制超表面,限制了其移动性和灵活性,因此无线系统的通信覆盖范围受到限制. 对此本文搭建了一种机载RIS的无人机(UAV)系统进行无线通信,解决了可编程数字编码超表面的无线控制问题. 利用FPGA的无线传输模块发送编码序列切换PIN管的工作状态,改变超表面的反射系数,同时UAV携带RIS和FPGA作为可移动的空中基站飞行,使得RIS可以移动到任意地点,将通信信号反射给目标用户. 为了验证该系统的可行性,在实验中以2.74%的误码率和12.83%的丢包率成功发送和接收了图片. 研究结果表明,UAV辅助RIS技术在通信领域有着潜在的应用前景.

         

        Abstract: Reconfigurable intelligent surface (RIS) technology has emerged as a promising solution for the next-generation wireless communication, owing to its remarkable capability to control electromagnetic properties. However, most existing studies rely on the data transmission between a Field Programmable Gate Array (FPGA) and a computer via a data cable to control the metasurface, limiting its mobility and flexibility. Consequently, the wireless system's communication coverage remains constrained. This study develops a wireless communication system with airborne RIS by using an Unmanned Aerial Vehicle (UAV), resolving the issue of wireless control of the programmable digital coding metasurface. We use the wireless transmission module of the FPGA to send the coding sequence, which can switch the working states of the PIN diodes, resulting in a change of the metasurface’s reflection amplitude. Meanwhile, a UAV carries the RIS and FPGA flying as an aerial relay, so that the RIS can be moved anywhere and reflect the signal to target users. A picture is sent and received successfully with a bit error rate of 2.74% and a packet loss rate of 12.83%, which verifies the feasibility of the system. The result demonstrates the favorable potential of applying the UAV-assisted RIS technology to communication.

         

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