| Summary: | 碩士 === 國立交通大學 === 電信工程系 === 90 === In this paper, an advanced vector channel sounder as employed to perform the time-varying vector radio channel impulse response measurement in urban and suburban environments. By analyzing measurement data, characteristics of radio channel parameters are studied, which includes the cluster factor, the mean arrival rate of multipath, the time-varying parameter, the spatial parameter and a series of amplitudes, phase shifted replicas of the transmitted signal. Then a time-varying vector radio channel impulse response simulator based on Turin’s D-K model is proposed, where concepts of Hashemi’s time-varying channel impulse response model and COST 259 channel model are applied. This simulator is validated by comparing the computed r.m.s. delay spread with the measured one and has been proven that which can accurately model the time-varying channel impulse response.
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