论文标题
简化反向散射部署：Full Duplex Lora Back-Scatter
Simplifying Backscatter Deployment: Full-Duplex LoRa Backscatter
论文作者
论文摘要
由于现有半双链系统部署的实际挑战，无处不在的反向散射连通性的承诺使我们陷入了困境。为了解决这个问题，我们设计了第一个远程远程Lora BackScatter Reader。我们利用现有的洛拉芯片组作为收发器，并将微控制器与廉价的被动元素结合使用，包括混合耦合器，电感器，可调电容器和电阻器，以实现78 dB的自我干预取消和低成本，较小的跑步量和较小的多型lorra readera readera。 我们在各种部署中评估了我们的系统，并表明我们可以在视线的距离内成功与反向散射标签进行通信，并在4,000英尺$^2 $的办公区域中通过墙壁和隔间等障碍物（例如墙壁和隔间）进行通信。我们重新配置读者以符合智能手机的大小和功率要求，并与隐形眼镜形式的原型设备进行交流。最后，我们将读者连接到无人机上，并展示了对精密农业的反向散射感，瞬时覆盖范围为7,850 ft $^2 $。
Due to the practical challenges in the deployment of existing half-duplex systems, the promise of ubiquitous backscatter connectivity has eluded us. To address this, we design the first long-range full-duplex LoRa backscatter reader. We leverage existing LoRa chipsets as transceivers and use a microcontroller in combination with inexpensive passive elements including a hybrid coupler, inductors, tunable capacitors, and resistors to achieve 78 dB of self-interference cancellation and build a low-cost, long-range, and small-form-factor Full-Duplex LoRa Backscatter reader. We evaluate our system in various deployments and show that we can successfully communicate with a backscatter tag at distances of up to 300 ft in line of sight, and through obstacles, such as walls and cubicles, in a 4,000 ft$^2$ office area. We reconfigure our reader to conform to the size and power requirements of a smartphone, and demonstrate communication with a contact-lens-form-factor prototype device. Finally, we attach our reader to a drone and demonstrate backscatter sensing for precision agriculture with an instantaneous coverage of 7,850 ft$^2$.
