
300 Simulation Technologies in Networking and Communications
In any case, the full multipath channel model introduced previously has to be used. The discretized
version (assuming a sampling period T
s
) is given by
henmn
k
iik
j
ik
t
ik
[] ,
,
⎡
⎣
⎤
⎦
=
−
∑
κα δ
θ
where
=
. In order to simulate this channel, we have to take into account the statisti-
cal distribution of a larger number of parameters than before:
• The number of paths, N
t
, which is xed in many simple models, but not in other more
sophisticated models (particularly in models derived from empirical measurements).
• The path gain factor, κ
i
, which indicates the relative import