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In this paper, according to the analysis of ICC standard and characterization profiles, every color channel is divided into 16 grades by using the program C++. Color square is measured accurately by using X-rite spectrophotometer. Using the ICC uniform color space, quadratic polynomial model of RGB-CIEXYZ are founded, which are crossed curve fitting, calculating color error, analyzing accurate. Thus...
A simple and effective method for evaluating the parameters of specific attenuation model induced by rain is presented. The parameters at the frequencies from 20GHz to 50GHz are given using the specific attenuation calculated by equivalent permittivity model under the measured raindrop size distribution and the method presented in this paper, which are more applicable in Xi'an, China. The parameters...
IEEE 802.11 DCF exhibits poor performance as the number of nodes increases in a wireless LAN due to high collision probability on each transmission. In this paper, based on the optimal constant backoff (OCB) window scheme which fixes the backoff window at every backoff stage, a virtual collision solution (VCS) scheme is proposed to reduce the collision probability and to enhance the throughput performance...
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