제주시 지역 마이크로셀 환경에서의 전파 특성 = The Radio Wave Propagation Characteristics for Microcell at Cheju City

다국어 초록 (Multilingual Abstract)

In the mobile radio communication system, we must study wave propagation characteristics for microcell and picocell environments because the conventional cellular environment is changing to microcell and picocell. In this paper, sample areas are selected to study propagation in variety of environment including the width of road, the built-up density and the height of building at Cheju city area. Sample area is separated two zones by break point at which the slope of the signal strength is changed. The location of the break point is calculated on first Fresnel zone clearance for antenna height variation. The slope and the standard deviation of the signal strength is obtained by the regression analysis. The break point distance can be used to define the size of microcell and to design of microcellular system.