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

WINNER D5.4 v. 1.4
Table 6.6: The three output arguments.
Parameter name Definition Unit
CHAN
DELAYS
FULLOUTPUT
delays
A 5D-array with dimensions U x S x N x T x K
A K x N vector of path delay values. Note that delays
are, for compatibility with the INITVALUES, also
included in FULLOUTPUT.
A MATLAB struct with the following elements:
A K x N matrix of path delays. This is identical to the
second output argument.
subPathPowers A K x N x M array of subpath powers. -
Aods A K x N x M array of subpath angles of departure degrees
Aoas A K x N x M array of subpath angles of arrival degrees
subpath_phases
A complex-valued K x N x M array giving the final
phases of all subpaths. When polarization option is
used, a K x P x N x M array, where P=4. In this case
the second dimension includes the phases for [VV VH
HV HH] polarized components.
sec
sec
degrees
Path_losses A K x 1 vector linear scale
shadow_fading A K x 1 vector linear scale
Delta_t
Xpr
A K x 1 vector defining time sampling interval for all
links.
A K x 2 x N array of cross-polarization coupling
power ratios. The second dimension is the [V-to-H H-
to-V] coupling ratios.
sec
linear scale
6.3 Guidelines and examples on performing system-level simulations
Chapter 6.1 has provided an overview on the concept of our implementation. In the following, we want to
show how this generic interface can be used to simulate some special types of system-level situations.
This can serve as a quick guide on how to implement these special cases and as proof of the versatility of
our implementation.
6.3.1 Handover
A handover situation is characterized by a MS moving from the coverage are of one BS to the coverage
area of another BS. Figure 6.3 illustrates this setup.
Figure 6.3: Handover scenario.
There are two base-stations or cells denoted c1 and c2, and one mobile station. Note that WIM is a quasistationary
channel model; it does not provide the means to generate smooth evolution of channels for a
long, continuous period. What we generate instead is the channels for a sequence of short, separated
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