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

WINNER D5.4 v. 1.4
The parameters for scenario A1, B3 and D1 have been obtained from the WINNER measurements
described in Section 5.2.1, 5.2.3 and 5.2.6. For scenario B1, reference data from TKK outside the
WINNER project is used. A combination of the measurements described in Section 5.2.4 and literature,
Section 5.5.4, is used for scenario C1. For scenario C2, results from the reference measurement data
measured by Nokia outside the WINNER project and literature (see Section 5.5.5) is used.
For scenario A1 LOS/NLOS, C1 LOS/NLOS, C2 NLOS, D1 LOS/NLOS and Bridge2Car, all parameters
are modelled as log-normal, which means that the transformation is simply “log(x)” and the inverse
“10^x”. One exception is the shadow fading, where the transformation is “10log(x)”, so that the
transformed variable is in dB. In scenario B1 LOS, the delay-spread is log-Gumbel, while the AoD and
AoA spread is log-Logistic. In B1 NLOS, the delay-spread, AoD and AoA spread are all log-Gumbel.
The transformations for these cases are described in Section 3.1.1. In scenario B3, the delay-spread, AoD
spread, and AoA spread are modelled as normal (thus the transformed and untransformed variables are
the same). In all cases, the shadow fading is modelled as log-normal.
The mean µ and covariance matrix R ( 0)
have been obtained for each scenario and are listed in the tables
of Section 3.1.1. Also listed in Section 3.1.1 for each scenario and parameter is a decorrelation distance
∆ . This distance has been obtained by fitting a single exponential exp( − ∆r / ∆)
to the auto-correlation
functions. The expression (*) however, mixes all of the decorrelation distances λ
1,
K,λm
so that we need
to do a joint fit of all four auto-correlation functions. Below, we have plotted the exponential
exp( − ∆r / ∆)
together with the auto-correlation obtained from (*). The decorrelation distances
λ
1,
K,λ m have been manually optimized and their values are listed in Table 3.4.
5.4.13.1 A1 LOS
Figure 5.70: The auto correlation functions obtained from (*) using the λ parameters of Table 3.4
and the single exponential functions obtained from measurements in Scenario A1 LOS.
5.4.13.2 A1 NLOS
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