each cluster due to the non-self-blocking regions k=1,2,3,4 is given as Ldb - 20 log10[1 - provided that and OPOA - Ok <yk; otherwise, the attenuation is 0 dB. The terms FA1|A2|Z||Z2 in the previous equation are defined as follows [4,5]: where A1=4AOA (4k+xx/2), A2 - and Z = OZOA (Ok - yk/2). The center of the blocker is generated based on a uniformly distrib- uted random variable, which is temporally and spatially consistent. The 2D autocorrelation function R(Ax, At) can be described with sufficient accuracy by the exponential function R(Ax, At) where dcorr denotes the spatial correlation dis- tance or the random variable determining the center of the blocker and tcorr is the correlation time given as tcorr = dcorr/v, in which V is the speed of moving blocker [4,5]. 3.1.1.6 Oxygen Absorption The electromagnetic wave may be partially or totally attenuated by an absorbing medium due to atomic and molecular interactions. This gaseous absorption causes additional loss to the radio wave propagation. For frequencies around 60 GHz, additional loss due to oxygen absorption is applied to the cluster responses for different center frequency and bandwidth correspondingly. The additional loss OLn(fc) for cluster n at center frequency fc is given as follows [4]: New Radio Access Physical Layer Aspects (Part 1) 299 Table 3.2: Oxygen attenuation a(fc) as a function of frequency [4,5]. Frequency (GHz) a(fc)(dB/km) where a(fc) denotes the frequency-dependent oxygen absorption loss in dB/km whose sample values at some frequencies are shown in Table 3.2, C is the speed of light in m/s, d3D is the 3D distance in meters between the receive and transmit antennas, Tn is the nth cluster delay in seconds, and TA 0 in the LoS scenarios. For center frequencies not shown in Table 3.2, the frequency-dependent oxygen absorption loss a(fc) is obtained from a linear interpolation of the values corresponding to the two adjacent frequencies [4,5]. For wideband channels, the time-domain channel response of each cluster (all rays within one cluste