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

WINNER D5.4 v. 1.4
5.6.4 K-factor
5.6.4.1 Scenario B5a
A static (non-fading) channel component is added to the impulse response. We select this parameter to be
10 dB. This is based on the worst case (smallest value) in [SCK05]. In [OBL+02] a somewhat smaller
average of 2.3 dB is seen but this is probably due to the LOS obstructions by trees.
5.6.4.2 Scenario B5b
A static (non-fading) channel component is added to the impulse response. Based on [FDS+94] we select
this parameter to be 10 in range1, 2 in range2, and 1 in range3 (for a definition of the ranges see the
section on delay-spread above.)
5.6.5 Cross-polarization discrimination (XPR)
5.6.5.1 Scenario B5a
The polarization scrambling (i.e. the power transfer between a transmitted vertically polarized to a
received horizontally polarized antenna, and vice versa) is highly related to reflection on rough surfaces.
This effect should be small in LOS scenarios. A high XPR means that there is little power transfer
between the components. This means that we should be able to use the highest XPR values measured in
[Dug99]. However, in order to avoid overly optimistic results we chose the mean value of [Dug99] i.e.
30dB.
5.6.5.2 Scenario B5b
Based on the results in [KVV05] we set the XPR to 9 dB.
5.6.6 Doppler
5.6.6.1 Scenario B5a
The Doppler is modelled by moving the scatterers appropriately. We chose the spectrum of [DGM+03]
since it is assumed to be the most similar to the application here.
5.6.6.2 Scenario B5b
We propose the introduction of individual Doppler frequencies similar to the model in [TPE02]. We
select the Doppler model [Erc01] which has somewhat larger Doppler spread than [DGM+03] probably
due to the influence of traffic.
5.6.7 Angle-spread
5.6.7.1 Scenario B5a
Based on our visual inspection of the plots in [SCK05] we set the AoD and AoA of the non-direct paths
to be Gaussian with composite power weighted angle-spread of 2 degrees. The ZDSC angle-spread is set
to 0.5 degree.
5.6.7.2 Scenario B5b
Based on our visual inspection of the plots in [MIS01] we set the AoD of all the paths to be uniformly
distributed between 0 and 360 degrees. The direct path is aligned with the geometrical angle between the
transmitter and receiver. The intra-cluster angle-spread is set to 2 degrees.
5.6.8 Antenna gain
5.6.8.1 Scenario B5
The antenna pattern that can be used in the simulation is specified by
A
( γ )
⎡ ⎛ γ ⎞
=−min⎢12
⎜ ⎟
⎢ ⎝γ
3dB
⎣ ⎠
2
A
,
m
⎤
o
o
⎥, where 180 < φ