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Measurement uncertainty provides a quantitative reference to choose appropriate instruments and measurement methods. This paper focuses on the measurement uncertainty introduced by measurement instruments in frequency domain channel measurement systems. For frequency domain channel measurement, the measurement instrument, Vector Network Analyzer, need to be calibrated before measurement. The uncertainty...
This paper investigates the measurement uncertainty introduced by measurement instruments in frequency domain channel measurement systems. The uncertainty is a quantitative indication of the quality of the measurement results, so it provides a quantitative reference to chose appropriate instruments and measurement methods. The uncertainty analysis is based on Monte Carlo method. To account for the...
This paper proposes a novel demosaicing algorithm based on improved gradients with color correlation. Compared to conventional method, especially on region with dense lines and textures, the proposed method may reduce the probability on the edge direction judgment, which may lead to obvious artifacts. The improved adaptive gradients calculation uses color correlation information. The proposed method...
A novel method is proposed in this paper to cancel the image-band interference for multi-mode/band receivers with baseband AGC. The Hilbert transformer, which plays an important part in heterodyne multi-mode receivers described here, has the imperfection which results in image-band interference in baseband, causing severe deterioration of transmission performance. The method proposed here cancels...
Elastography is a bioelasticity-based imaging modality which has been proved to be a potential evaluation tool to detect the tissue abnormalities. Conventional method for elastography is to estimate the displacement based on cross-correlation technique firstly, then strain profile is calculated as the gradient of the displacement. The main problem of this method arises from the fact that the cross-correlation...
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