Open Access

ARTICLE

Jie Gui^1,2,*, Joohyun Suh³
Journal on Internet of Things, Vol.4, No.4, pp. 197-213, 2022, DOI:10.32604/jiot.2022.037182
Abstract In this paper, the research on the teaching method of children’s image cognition based on AR technology is carried out. By analyzing the principle of AR technology to recognize images, we understand that AR technology can promote children’s image cognition, and this teaching method is in line with the Tower of Experience theory. It further analyzes the current situation of children’s image cognition teaching with simple teaching methods, backward AR teaching tools, and poor perception of teaching objects. Teachers’ traditional image teaching methods cannot effectively and efficiently improve children’s image cognition. Therefore, based on AR technology, two commonly used image… More >

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ARTICLE

Xiukai Ruan¹, Shahid Iqbal Awan^2,*
Journal on Internet of Things, Vol.4, No.4, pp. 215-225, 2022, DOI:10.32604/jiot.2022.038270
Abstract A SCMA ACO-OFDM downlink visible light communication (VLC) system is proposed. Six users share four spectrum resources, four of which are 4 primary color LED lights. ACO-OFDM technology is used to convert the user’s sparse codebook mapped signal into a positive real value signal that can be carried on the light wave, which can realize high-speed parallel communication. Simulation verifies the feasibility of the system. At the same time, the channel model of visible light communication is constructed, and the signal-to-noise ratio(SNR) and channel gain of the visible light channel are systematically analyzed. Finally, the theoretical bit error rate formula… More >

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ARTICLE

Mohammed Abazeed^*
Journal on Internet of Things, Vol.4, No.4, pp. 227-233, 2022, DOI:10.32604/jiot.2022.039598
Abstract Wireless multimedia sensor networks present unique quality of service and resource management requirements that distinguish them from scalar data in traditional wireless sensor networks. These demands pose a formidable obstacle to sensor nodes, which are resource-constrained and thus require distinct strategies and techniques to operate effectively. Multipath routing improves reliability while conserving the limited resources of sensor nodes. The source node selects the most optimal paths for delivering multimedia packets based on the multi-hop routes. This paper investigates the impact of packet loss on the observed frame rate in multipath routing protocols and evaluates it mathematically at the receiver node.… More >

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ARTICLE

M. Vlachos^1,*, R. Lopardo², A. Amditis¹
Journal on Internet of Things, Vol.4, No.4, pp. 235-261, 2022, DOI:10.32604/jiot.2022.040820
Abstract In the era of the Internet of Things (IoT), the ever-increasing number of devices connected to the IoT networks also increases the energy consumption on the edge. This is prohibitive since the devices living on the edge are generally resource constrained devices in terms of energy consumption and computational power. Thus, trying to tackle this issue, in this paper, a fully automated end-to-end IoT system for real time monitoring of the status of a moving vehicle is proposed. The IoT system consists mainly of three components: (1) the ultra-low power consumption Wireless Sensor Node (WSN), (2) the IoT gateway and… More >

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Rawan Sanyour^*, Manal Abdullah, Salha Abdullah
Journal on Internet of Things, Vol.4, No.4, pp. 263-282, 2022, DOI:10.32604/jiot.2022.040966
Abstract With the rapid growth of the Internet of Things paradigm, a tremendous number of applications and services that require minimal or no human involvement have been developed to enhance the quality of everyday life in various domains. In order to ensure that such services provide their functionalities with the expected quality, it is essential to measure and evaluate this quality, which can be in some cases a challenging task due to the lack of human intervention and feedback. Recently, the vast majority of the Quality of Experience QoE works mainly address the multimedia services. However, the introduction of Internet of… More >

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