标题： 使用SDR平台的TVWS窄带数据通信的实验室外性能评估 显示英文标题

标题： Experimental Outdoor Performance Evaluation of TVWS Narrowband Data Communication using SDR Platform

摘要： 工业、科学和医疗（ISM）频段大规模部署物联网（IoT）网络会导致频谱拥塞，并需要多个网关来覆盖更广的区域，这会增加成本、复杂性和能耗。电视白空间（TVWS）提供了丰富的频谱资源，足以满足低数据速率IoT应用的需求。由于无线信号能够穿透障碍物和地形，该低频频带可以提供更大的覆盖范围。本文通过郊区视距（LOS）和非视距（NLOS）传播场景的户外实验，研究了TVWS窄带数据通信的性能。我们构建了一个软件定义无线电（SDR）测试平台，并开发了一个GNU无线电基准工具，用于在不同位置的网关与无线节点之间进行TVWS窄带数据通信的户外实验。结果表明，该系统在NLOS路径下可实现高达97Kbps的吞吐量，误包率（PER）和丢包率（PLR）均低于1%，使其适用于低数据速率的应用。这项工作为窄带白空间设备（WSD）物理层的设计提供了宝贵的见解。所开发的基准工具还将极大地帮助其他研究人员评估基于SDR的通信系统的性能。 显示英文摘要

摘要： Large-scale deployment of Internet of Things (IoT) networks in the industrial, scientific, and medical (ISM) band leads to spectrum congestion and requires multiple gateways to cover wide areas. This will increase cost, complexity, and energy consumption. TV White Spaces (TVWS) provides an abundant spectrum that is sufficient for low data rate IoT applications. This low-frequency band offers coverage over larger areas due to the ability of wireless signals to penetrate obstacles and terrain. In this paper, we examine the performance of narrowband data communications in TVWS through an outdoor experiment in a suburban area with line-of-sight (LOS) and non-line-of-sight (NLOS) propagation scenarios. We implement a software-defined radio (SDR) testbed and develop a GNU radio benchmark tool to perform outdoor experiments for TVWS narrowband data communication between a gateway and wireless nodes at various locations. The results reveal that the system can achieve a throughput of up to 97 Kbps with a packet error rate (PER) and packet loss rate (PLR) under 1% over NLOS paths, making it suitable for low-data rate applications. This work offers valuable insights for designing the physical layer of narrowband white space devices (WSDs). The developed benchmark tool will also greatly assist other researchers in evaluating the performance of SDR-based communication systems.