Final report on link level and system level channel models - Winner

WINNER D5.4 v. 1.4
Table 5.39: The 10, 50 and 90 % percentiles for the cumulative distribution function of the
narrowband K-factor (dB) for a rural LOS environment at 5.25 GHz.
Percentile
K-factor (dB)
10% -0.6
50% 10.9
90% 20.0
mean 10.1
The cumulative distribution function (CDF) of the Ricean K-factor at 100 MHz bandwidth and 5.25 GHz
centre-frequency in a rural LOS environment is shown in the figure below. It can be seen that the
measured results fit quite well in log-normal distribution. The parameters of the distribution are: mean
10.1 dB and standard deviation 8.0 dB.
K-factor in the D1 rural scenario and LOS propagation conditions at 5.25 GHz centre-frequency is shown
in the Figure 5.62 as function of the BS – MS distance.
Figure 5.62: Ricean K-factor as function of distance in a D1 rural environment.
In the rural LOS, we also noticed that K increases with increasing distance for the scenario D1. The
formula is
where d is the distance between the BS and the MS.
5.4.12 Cross-polarization ratio (XPR)
K = 3.7 + 0.019 d (5.25)
The cross-polarization ratio XPR V is defined as the ratio of power received from vertical to vertical
polarization to the power received from vertical to horizontal polarization as
P
VV
XPR
V
= and
PVH
P
HH
XPR
H
= (5.26)
PHV
Respectively, XPR H is defined as the power ratio between HH and HV components. The XPR values are
extracted from the estimated propagation paths using the strongest path (LOS) and the reflected paths
(scattering).
5.4.12.1 Scenario A1
The CDF percentile values of the XPR at 100 MHz bandwidth and 5.25 GHz centre-frequency in an
indoor environment is shown in the Table 5.40.
Table 5.40: Percentiles of the cross-polarization ratio.
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