A lora signal source identification method

A signal source and signal technology, which is applied in the field of LoRa signal source identification system, can solve the problem of source identification of different devices that cannot use LoRa signals, and achieve the effect of ensuring recognition accuracy, small amount of calculation, and high-efficiency recognition
CN110263810BActive Publication Date: 2021-04-13NORTHWEST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTHWEST UNIV
Publication Date
2021-04-13

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Abstract

The invention provides a LoRa signal source identification method, comprising the following steps: Step 1, the signal sequence S received by the receiving end A and the simulated signal sequence S 1 Perform cross-correlation calculations to obtain correlation sequences; extract multiple positions with high correlation values ​​in the correlation sequence, and use the extracted positions as the starting positions of the LoRa signal data packets to obtain multiple LoRa signal data packets; step 2, from the LoRa Multiple signal features for identifying signal sources are extracted from the signal data packet, and multiple signal features for identifying signal sources are combined into multiple LoRa signal feature sets; step 3, extract the basis of multiple LoRa signal feature sets The obtained LoRa signal feature set for LoRa signal source identification is input into the obtained classifier according to the obtained LoRa signal feature set to obtain the signal sequence S A corresponding signal source. The present invention realizes high-precision and high-robust LoRa signal source identification by extracting multiple signal features of the preamble part of the LoRa signal and combining with a machine learning classifier.
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Description

technical field

[0001] The invention belongs to the technical field of wireless communication, and in particular relates to a system for identifying a LoRa signal source. Background technique

[0002] With the application and deployment of IoT technology in smart cities, smart medical and other fields, early wireless communication technologies such as ZigBee and WiFi cannot meet the needs of long-distance IoT monitoring applications, and low-power long-distance network LPWAN has emerged as the times require. Among them, the LPWAN communication technology represented by LoRa (Long Range) technology has not only become the darling of the industry, but also a hot spot and focus of academic research because of the ease of access to unlicensed frequency bands and the maturity of the protocol. At present, the application research of using LoRa technology for monitoring, positioning and tracking has been gradually carried out. With the increase of LoRa application deployment, the n...

Claims

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