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학술대회 Carrier Frequency Effects on Propagation Characteristics in Rural Macro Environments
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김원섭, 이혁재, 박재준, 김명돈, 정현규
International Conference on Communications and Networking in China (ChinaCom) 2009, pp.1050-1054
Based on the experimental results obtained from the extensive wideband MIMO channel measurements at 2.38, 3.705 and 5.25GHz in Line-Of-Sight (LOS) rural macro environments, the empirical Path Loss (PL) model is proposed for the IMT-Advanced systems. PL exponent, intercept, frequency dependent factor and standard deviation of Shadow Fading (SF) are obtained by using the Least Square (LS) method. It is found that the frequency dependent factor well reflects the measured PL at each carrier frequency. We investigate the frequency dependence of SF and also propose an autocorrelation function which can be modeled with Exponentially Decaying Wave (EDW) function. It is observed that the EDW function well represent the general characteristic of autocorrelation curves.
KSP 제안 키워드
Carrier frequency, Frequency dependence, Frequency effect, IMT-Advanced, Least Squares(LS), Least square (LS) method, Line-Of-Sight(LOS), MIMO channel measurement, Path loss, Propagation characteristics, Standard deviation(STD)