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The multiplexing efficiency of 4×4 higher order MIMO with different MIMO topologies under different propagation scenarios in a mobile terminal is presented in this study. The mean effective gain, correlation coefficient and multiplexing efficiency of different MIMO topologies are compared and the impact from the angular spread of the incoming wave is also studied. The results are instructive for the...
Economic and industrial development has led to increasing problems with particulate pollution in many countries. Particulate matter with the diameter of less than 2.5 m (PM2.5) is of concern in many cities. In this study, a total of 70 samples of PM2.5 were collected from dusty environments and analyzed using terahertz (THz) radiation. The transmission spectrum of PM2.5 had two distinct absorption...
In the real world, there are many complex networks with a fixed number of nodes, such as the friendship network in a class of a university. In this paper, we propose a "friends of a friend" based network (FFB network for short) model, in which the mechanism leading to a friendship connection between two persons is based on "friends of a friend": a person always try to strike up...
In this paper, MIMO reference antennas with different correlation coefficients are proposed for Over-The-Air (OTA) applications. The correlation can be simply controlled through a slot etched on a dual-feed PIFA with the similar total efficiency. Three kinds of situations are investigated with the proposed method: high correlation (HC), mid correlation (MC), and low correlation (LC). In order to verify...
Based on uniform design method, correlations between five flux components and Sn-9Zn/Cu wetting were studied. Take lauric acid, propylene glycol, decanol, polyethylene glycol 2000 and zinc chloride as independent variables Xi, wetting spreading area as function Y in the experiment. Every variable is divided into fifteen levels. Using computer software UST4.0, the experimental data were gradually statistical...
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