多传感器节点识别的5ghz频段Wi-Fi后向散射系统

2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) Pub Date : 2020-09-01 DOI:10.1109/RFIT49453.2020.9226217

Koki Edamatsu, Taiki Machii, M. Motoyoshi, S. Kameda, N. Suematsu

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引用次数: 1

摘要

本文提出了一种基于5ghz频段Wi-Fi系统的无线物联网多传感器节点识别方法。该识别系统利用了用于RFID的反向散射。将Wi-Fi信号与Wi-Fi后向散射信号相乘进行下变频，识别后向散射接收机中的传感器节点(SN)。每个传感器节点使用不同的时钟频率对接收到的Wi-Fi信号产生反向散射信号。在后向散射接收机中，将Wi-Fi信号与后向散射信号相乘进行下变频，下变频频谱出现在不同的频率上，便于识别多个SNs。实验验证了该系统的有效性。

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5-GHz Band Wi-Fi Backscatter System for Multiple Sensor Nodes Identification

In this paper, we propose multiple sensor nodes identification based on 5 GHz band Wi-Fi system for wireless IoT system. This identification system utilizes backscatter which is used for RFID. Wi-Fi signal and Wi-Fi backscatter signal are multiplied to downconvert to identify sensor node (SN) in the backscatter receiver. Each sensor node (SN) uses different clock frequencies to generate backscatter signals of the received Wi-Fi signal. In the backscatter receiver, the Wi-Fi signal and the backscatter signal are multiplied to downconvert, thus the downconverted spectrum appears in different frequencies for identifying multiple SNs easily. The effectiveness of the proposed system is confirmed by experimental demonstration.

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2020 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)

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