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A SDR Prototype for Backscatter Sensor Networks
Jinrong Mo,Shengbo Hu,Feng Lv,Yanfeng Shi,Tingting Yan 보안공학연구지원센터 2016 International Journal of Future Generation Communi Vol.9 No.10
Low cost and low power is one of the important reasons in the wide application of backscatter sensor networks. Based on LabVIEW and USRP platforms, this paper presents and implements a simple and configurable SDR prototype for backscatter sensor networks. The SDR prototype can apply to the multi-sensor environment with low power. The prototype consists of configurable backscatter transceiver with homodyne receiver and sensor nodes. It can reduce the power consumption of system efficiently through harvesting wireless RF energy and waking sensor nodes. The frequency division multiple access method with configurable sub-carrier is proposed, and the constraint conditions of sensing data pulse period for avoiding collision among sensors are presented and proved in this paper. The performance of the prototype is analyzed, and the closed-form solution of the probability of outage under the log-normal channel is also given and proved. Finally, the experiment and simulation show the SDR prototype is effective and feasible. The EVM value is less than 2.8%, and the probability of outage error between numerical analysis and Monte Carlo simulation is less than 1.86%.
Hua Ariel Li,Monica Grosso,Tingting Mo,Agnes Nairn 글로벌지식마케팅경영학회 2023 Global Marketing Conference Vol.2023 No.07
Compared to the prevalence of advertising targeted at teens, our understanding of their vulnerability to advertising has been limited due to the cognitive/developmental view adopted by most previous research. However, cognitive development is not the most significant aspect that differentiates adolescents from adults. Adolescence is when teenagers start to take on more responsibility in defining themselves and become more skilled at using consumption to construct and signal their identity. On one hand, teens have a growing desire to express their unique identity as autonomous and distinctive individuals, separate from their family and differentiated from others. On the other hand, they are nearly obsessed with what others think about them, striving to belong to a group and feeling devastated by signs of disapproval from peers. This conflict between the need for assimilation and the need for differentiation is especially pronounced during adolescence when teenagers increasingly seek the approval of their peers while expressing their uniqueness. As a result, their sense of self is in a constant state of flux. This shaky self-identity has been shown in previous research to coincide with low self-esteem, which is associated with a high level of materialism.