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In this paper, we propose the tuned free-space path loss modelling in high speed railroad considering Doppler effect. We use tuned free space path loss model which is utilized for measurement results at high speed railroad. The environment of high speed rail is mostly at viaduct and tintinnii over than 50 percent. The purpose of this paper is analyzing Doppler shift effect at viaduct and plain by...
This paper describes various radio propagation characteristics in the large city such as Seoul in Republic of Korea and talks on the closed form of a received interfering signal intensity to a victim system for the coexistence with two different systems. Actually, it is difficult to how to choose the optimum radio propagation model for predicting on the interference impact because of various environment...
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