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학술대회 Diffraction Loss Model based on 28 GHz Over-Rooftop Propagation Measurements
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김경원, 김명돈, 박재준, 이주열, 양금위, 이광천
Vehicular Technology Conference (VTC) 2017 (Fall), pp.1-5
17MF1100, 밀리미터파 5G 이동통신 시스템 개발, 김태중
Millimeter-wave frequency bands have been considered as candidate bands for the next generation (5G) mobile communications. For successful 5G development, studying millimeter-wave propagation channels is important. Since a lineof-sight (LOS) path between stations is easily blocked by a building in urban environments, diffraction models are important to predict non-line-of-sight (NLOS) wireless channels. However, due to high diffraction loss and environmental constraints, studies on diffraction loss in millimeter-wave bands have not been conducted sufficiently yet. Several investigations of diffraction loss in millimeter-wave bands have been performed, but they are limited by short distance propagation or small diffraction angles. This paper provides a diffraction loss model based on 28 GHz measurements. The distance range of the measurements is up to about 150 m and the diffraction angle range is up to about 50 degrees.
KSP 제안 키워드
28 GHz, Diffraction loss, Environmental constraints, Line-Of-Sight(LOS), Loss model, Millimeter-wave band, Non Line-of-sight(NLOS), Propagation Channel, frequency band, millimeter wave(mmWave), millimeter-wave frequency