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The co-channel interference is the most usual interference type of the UWB system, which effects the receive performance of the UWB system. In this paper, a corresponding path loss models based on the propagation feather of the UWB and co-channel interference signals is built, and an analysis method of the UWB co-channel interference based on the co-channel interference guard threshold is presented...
In this paper, Near-infrared spectroscopy (NIRS) was introduced into the field of Chinese herbal medicines and a rapid analytical method which can not only differentiate the two species of Fructus forsythiae, QingQiao (QQ) and LaoQiao (LQ), but also determine the contents of Phillyrin, Forsythoside A and Moisture in Fructus forsythia was established. The total content of volatile oil in Fructus forsythia...
In this paper, near-infrared spectroscopy (NIRS) combined with discriminant analysis was used as a qualitative tool to distinguish Fructus forsythiae from different geographical origins by collecting and analysing the NIR spectra in the range of 12000-4000cm-1. NIR spectra were analyzed by two methods: clustering analysis and discriminant analysis. In the former, the second derivative and Norris smoothing...
In today's society, it's a phenomenon that many other varieties of yam are pretended to be tie gun yam in the market. In this paper, Near infrared(NIR) spectroscopy combined with conformity test was used to establish a method which can quickly discriminate tie gun yam from other varieties. Firstly, the NIR spectra of 200 samples of yam, including 45 tie gun yam and 155 non-tie gun yam, were acquired...
For the method of neural network can modify and better the forecasting effects of grey prediction model, a combined NN-GM (1,1) forecasting model is proposed. After the time sequence of the network traffic was analyzed, the equidistant metabolic GM (1,1) forecasting model was constructed, and the residual error of the model was corrected by neural network based on Error Back Propagation (BP) algorithm...
Based on grey theory, a combined wavelet-GM (1,1) forecasting model is proposed. The random properties of some non-stationary time series can be reduced by wavelet decomposition into many series according to different scales. Decomposed time series are predicted with GM (1,1) model to obtain forecasted results of the original time series. Experiments on network traffic show that the combined model...
The concept of networked cascade control system, a cascade control system wherein the control loops are closed through a real-time network, is introduced, and the locations of the network in a type of networked cascade control system based on fieldbus are pointed out. Using the augmented state vector method, the closed-loop model of the overall system with single-packet transmission and multiple-packet...
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