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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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정명원, 김종호, 최재익, 김주석, 김경석, 백정기
ETRI Journal, v.34 no.6, pp.911-921
한국전자통신연구원 (ETRI)
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.
KSP 제안 키워드
3D ray-tracing, Actual measurement, Angular spread, Channel Characteristics, Channel Sounder, Characteristic parameters, Delay spread, Frequency characteristics, High Speed Wireless Communications, Jeju Island, Mobile wireless