Experimental Evaluation of IEEE 802.15.4 OFDM for Wireless IoT Communication Systems
Experimental Evaluation of IEEE 802.15.4 OFDM for Wireless IoT Communication Systems
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无线物联网通信系统 IEEE 802.15.4 OFDM 的实验评估
DOI：
10.1109/pimrc54779.2022.9978097
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
H. Harada
中科院分区：
文献类型：
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作者：
Keito Nakura;Naoki Ishibashi;Hiroko Masaki;Keiichi Mizutani;H. Harada
除了传感器和仪表之外，物联网（IoT）已经越来越多地实现了各种设备之间的通信。物联网具有通信功能，通过互联网相互连接，收集和使用各种数据。无线智能泛在网络（Wi-SUN）符合国际标准IEEE 802.15.4，因此被认为是物联网的无线通信标准。Wi-SUN使用IEEE 802.15.4标准的频移键控（FSK），可实现100 kbps的典型数据速率。但是，当Wi-SUN在其他物联网应用中实现智慧城市和智慧工厂时，需要更高的数据传输速率和更远的距离。IEEE 802.15.4标准中的正交频分复用（OFDM）已被用作满足相关要求的传输方法。本研究首先利用开发的评估板，通过计算机仿真和实验室实验对IEEE 802.15.4 OFDM的基本传输特性进行了评估。其次，利用开发的评估板对IEEE 802.15.4 OFDM的室外传输性能进行了评估。实验结果表明，IEEE 802.15.4 OFDM可以在较小的发射功率下获得与FSK相同的传输距离，并实现包错误率（PER）小于10%。
The Internet of Things (IoT) has been increasingly realizing communication among diverse devices, in addition to sensors and meters. IoT is equipped with communication functions and entails interconnection via the Internet to collect and use various data. Wireless smart ubiquitous network (Wi-SUN) conforms to the international standard IEEE 802.15.4, and it has therefore been considered a wireless communication standard for IoT. The Wi-SUN uses frequency-shift keying (FSK), standardized in IEEE 802.15.4, and achieves a typical data rate of 100 kbps. However, when Wi-SUN is used in other IoT applications to realize smart cities and smart factories, communications with higher data transmission rates and longer distances are required. Orthogonal frequency division multiplexing (OFDM), standardized in IEEE 802.15.4, has been used as a transmission method to satisfy the associated requirements. In this study, the fundamental transmission characteristics of IEEE 802.15.4 OFDM were first evaluated through computer simulations and laboratory experiments by employing developed evaluation boards. Next, the outdoor transmission performance of IEEE 802.15.4 OFDM was evaluated using the developed evaluation boards. Experimental results indicate that IEEE 802.15.4 OFDM can yield the same transmission distance as that of FSK using a smaller transmit power to achieve the packet error rate (PER) smaller than 10%.