@月冷大学 Modeling channels based on mechanism Modeling channel composition based on propagation mechanisms. Specular/reflected paths and the diffracted paths are identified. The former paths exhibit less path loss than the latter paths. UE# 8 ·: UE #7 Rel.power [dB] Figure 4.Estimated paths superimposed on a panoraic photograph taken from the BS location at the roof.The directions of the UE locations are indicated with green circles.It should be noted that the UEs are in NLOS conditions so that they are not visible from the BS. Medbo,J.;Asplund,H.;Berg,J.E.&Jalden,N.Directional channel characteristics in elevation and azimuth at an urban macrocell base station Antennas and Propagation (EUCAP),2012 6th European Conference on,2012,428-432 Graduate course:Propagation Channel Characterization,Parameter Estimation and Modeling 63/199Modeling channels based on mechanism Graduate course: Propagation Channel Characterization, Parameter Estimation and Modeling 63 / 199 ■ Modeling channel composition based on propagation mechanisms. ■ Specular/reflected paths and the diffracted paths are identified. ■ The former paths exhibit less path loss than the latter paths. Rel. power [dB] 0 -5 -10 -15 -20 -25 -30 UE #7 UE #1 Figure 4. Estimated paths superimposed on a panoraic photograph taken from the BS location at the roof. The directions of the UE locations are indicated with green circles. It should be noted that the UEs are in NLOS conditions so that they are not visible from the BS. Medbo, J.; Asplund, H.; Berg, J. E. & Jalden, N. Directional channel characteristics in elevation and azimuth at an urban macrocell base station Antennas and Propagation (EUCAP), 2012 6th European Conference on, 2012, 428-432