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학술지 An Enhanced Approach for a Prediction Method of the Propagation Characteristics in Korean Environments at 781 MHz
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저자
정명원, 김종호, 최재익, 김주석, 김경석, 백정기
발행일
201212
출처
ETRI Journal, v.34 no.6, pp.911-921
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.12.1812.0088
협약과제
11PR2500, 스펙트럼 공학 및 밀리미터파대 전파자원 이용기술개발, 최재익
초록
In high-speed wireless communications, an analysis of the propagation characteristics is an important process. Information on the propagation characteristics suitable for each environment significantly helps in the design of mobile communications. This paper presents the analysis results of radio propagation characteristics in outdoor environments for a new mobile wireless system at 781 MHz. To avoid the interference of Korean DTV broadcasting, we measure the channel characteristics in urban, suburban, and rural areas on Jeju Island, Republic of Korea, using a channel sounder and 4×4 antenna. The path loss (PL) measurement results differ from those of existing propagation models by more than 10 dB. To analyze the frequency characteristics for Korean propagation environments, we derive various propagation characteristic parameters: PL, delay spread, angular spread, and K-factor. Finally, we verify the validity of the measurement results by comparing them with the actual measurement results and 3D ray-tracing simulation results. © 2012 ETRI.
키워드
Channel parameter, Correlation, New mobile system, Propagation characteristic, Ray-tracing
KSP 제안 키워드
3D ray-tracing, Actual measurement, Angular spread, Channel Characteristics, Channel Sounder, Channel parameters, Characteristic parameters, Delay spread, Frequency characteristics, High Speed Wireless Communications, Jeju Island